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Sample records for magellan des moines

  1. Community Environmental Response Facilitation Act (CERFA) report. Fort Des Moines, Des Moines, Iowa. Final report

    SciTech Connect (OSTI)

    Young, B.; Rausch, K.; Kang, J.

    1994-04-01

    This report presents the results of the Community Environmental Response Facilitation Act (CERFA) investigation conducted by The Earth Technology Corporation (TETC) at the Fort Des Moines, a U.S. Government property selected for closure by the Base Realignment and Closure (BRAC) Commission. Under CERFA Federal agencies are required to identify real property that can be immediately reused and redeveloped. Satisfying this objective requires the identification of real property where no hazardous substances or petroleum products, regulated by the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), were stored for one year or more, known to have been released, or disposed. Fort Des Moines is a 53.28-acre site located in Polk County, Iowa, within the city limits of Des Moines. The installation's primary mission is to provide support and shelter for the U.S. Army Reserve. Activities associated with the property that have environmental significance are photographic processing, vehicle maintenance, printing, and fuel storage. TETC reviewed existing investigation documents; U.S. Environmental Protection Agency (USEPA), State, and county regulatory records; environmental data bases; and title documents pertaining to Fort Des Moines during this investigation. In addition, TETC conducted interviews and visual inspections of Fort Des Moines as well as visual inspections and data base searches for the surrounding properties. Information in this CERFA Report was current as of April 1994.

  2. West Des Moines, Iowa: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEtGeorgia: Energy Resources JumpChicago, Illinois: EnergyCovina,Des Moines,

  3. Superfund Record of Decision (EPA Region 7): Des Moines TCE Site, Operable Unit 3, Des Moines, IA. (Second remedial action), September 1992. Final report

    SciTech Connect (OSTI)

    Not Available

    1992-09-18

    The Des Moines TCE site is located southwest of downtown Des Moines, Polk County, Iowa. Land use in the area is predominantly industrial and commercial, and part of the site lies within the floodplain of the Raccoon River. Water from the Des Moines Water Works north infiltration gallery was found to be contaminated with trichloroethylene (TCE), dichloroethylene (DCE), and vinyl chloride at levels above accepted drinking water standards. The ROD addresses OU3, which encompasses potential sources of ground water contamination in an area north of the Raccoon River. The selected remedial action for OU3 includes no action with periodic groundwater monitoring.

  4. Des Moines, Washington: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (UtilityInstruments IncMississippi:DeltaFish LakeDepew, NewMoines, Washington:

  5. V-059: MoinMoin Multiple Vulnerabilities

    Broader source: Energy.gov [DOE]

    Multiple vulnerabilities have been reported in MoinMoin, which can be exploited by malicious users to conduct script insertion attacks and compromise a vulnerable system and by malicious people to manipulate certain data.

  6. Des Moines and Raccoon Rivers, Des Moines, Iowa

    E-Print Network [OSTI]

    US Army Corps of Engineers

    for the operation, maintenance, repair, replacement, and rehabilitation of the project after construction, a cost-Federal Central Place levee; and modifying three existing pump stations. The recommended plan also includes crossing Riverview Park. The first cost of the recommended plan is estimated at $10,500,000 including $10

  7. 2507 University Avenue Des Moines, Iowa 50311-4505

    E-Print Network [OSTI]

    Urness, Tim

    forums with Polk County Public Health, the local hospitals, local emergency responders, Polk County Emergency Management, and Iowa Department of Public Health

  8. Des Moines County, Iowa: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (UtilityInstruments IncMississippi:DeltaFish LakeDepew, New

  9. Devenir des tudiants diplms de Master en 2011 trente mois aprs l'obtention du diplme

    E-Print Network [OSTI]

    Chamroukhi, Faicel

    hommes à la sortie du diplôme : 54,2 % des femmes ont moins de 25 ans, contre 39,5 % pour les hommes. La'âge médian des diplômés à l'obtention du Master est de 25 ans. Les femmes sont souvent moins âgées que les de leur formation. Diplômés Répondants Diplômés Répondants Femmes 55,8% 57,6% 25 ans 25 ans Hommes 44

  10. II. Disparition du plancher ocanique au fur et mesure que les plaques s'enfoncent le long des fosses ocaniques profondes

    E-Print Network [OSTI]

    Miller, Scott

    formation des volcans débute lorsque la dalle froide s'enfonce dans le manteau brûlant, se réchauffe et se résistant. Comme ce matériau en fusion (ou magma) est moins dense que le manteau dur adjacent, il s

  11. Des robots qui s'adaptent aux dommages en quelques minutes

    E-Print Network [OSTI]

    Des robots qui s'adaptent aux dommages en quelques minutes Les robots pourraient aider notre) montrent comment des robots peuvent automatiquement s'adapter aux dommages en moins de deux minutes. Leurs résultats sont publiés dans Nature le 28 mai 2015. Contrairement aux robots actuels, les êtres vivants ont

  12. Targeted Energy Efficiency Expert Evaluation Report: Neal Smith Federal Building, Des Moines, IA

    SciTech Connect (OSTI)

    Fernandez, Nicholas; Goddard, James K.; Underhill, Ronald M.; Gowri, Krishnan

    2013-03-01

    This report summarizes the energy efficiency measures identified and implemented, and an analysis of the energy savings realized using low-cost/no-cost control system measures identified.

  13. SEP Success Story: A Touch of Green for Des Moines' Sherman Hill |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergy BillsNo. 195 -Rob Roberts About UsWYOMINGORDER 3643FEB SEP1014Department of

  14. Des Moines Area Community College | OSTI, US Dept of Energy, Office of

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report: Achievements ofCOMPOSITION OF VAPORSSeries)SupportedDavidA - L DOE

  15. A Touch of Green for Des Moines' Sherman Hill | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l De p u t y A s s iof1 of 8(MayPROCEEDINGS, Thirty-Eighth

  16. After 105 Years, Historic City Hall in West Des Moines, Iowa Goes Green |

    Broader source: Energy.gov (indexed) [DOE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l De p u t y A sCOLONY PROJECTRecord4 The newtopics in

  17. Iowa Water and Wastewater Operators Seek SEP Certification in...

    Broader source: Energy.gov (indexed) [DOE]

    Representatives from the Des Moines Metropolitan WRA and Des Moines Water Works sign the SEP agreement. The Des Moines Metropolitan Wastewater Reclamation Authority (WRA) and Des...

  18. The Magellan Final Report on Cloud Computing

    E-Print Network [OSTI]

    Coghlan, Susan

    2013-01-01

    Networking Initiative (ANI). Magellan provided storage andNetworking Initiative (ANI) research projects to support2011. Finally, support for ANI research projects started in

  19. Magellan Queues End November 30

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousandReport) |Administration Savannah River Site | Magellan

  20. The Magellanic Stream and debris clouds

    SciTech Connect (OSTI)

    For, B.-Q.; Staveley-Smith, L. [International Centre for Radio Astronomy Research, University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009 (Australia); Matthews, D. [Centre for Materials and Surface Science, La Trobe University, Melbourne, VIC 3086 (Australia); McClure-Griffiths, N. M., E-mail: biqing.for@icrar.org [CSIRO Astronomy and Space Science, Epping, NSW 1710 (Australia)

    2014-09-01

    We present a study of the discrete clouds and filaments in the Magellanic Stream using a new high-resolution survey of neutral hydrogen (H I) conducted with the H75 array of the Australia Telescope Compact Array, complemented by single-dish data from the Parkes Galactic All-Sky Survey. From the individual and combined data sets, we have compiled a catalog of 251 clouds and listed their basic parameters, including a morphological description useful for identifying cloud interactions. We find an unexpectedly large number of head-tail clouds in the region. The implication for the formation mechanism and evolution is discussed. The filaments appear to originate entirely from the Small Magellanic Cloud and extend into the northern end of the Magellanic Bridge.

  1. Argonne's Magellan Cloud Computing Research Project

    ScienceCinema (OSTI)

    Beckman, Pete

    2013-04-19

    Pete Beckman, head of Argonne's Leadership Computing Facility (ALCF), discusses the Department of Energy's new $32-million Magellan project, which designed to test how cloud computing can be used for scientific research. More information: http://www.anl.gov/Media_Center/News/2009/news091014a.html

  2. Direction des Ressources Humaines Bureau des concours ITRF

    E-Print Network [OSTI]

    Sart, Remi

    contractuels) et des personnels infirmiers - constitution des dossiers administratifs/financiers des agents et

  3. Dans l'espace Le problme en volume est moins simple qu'il n'en a l'air.

    E-Print Network [OSTI]

    Pansu, Pierre

    Dans l'espace Le problème en volume est moins simple qu'il n'en a l'air. Cela ressemble à une de savon maximise l'aire enserrée par la ficelle (en minimisant l'aire du complémentaire). A New

  4. Magellan additional information | U.S. DOE Office of Science...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ), GPUscience.com ( http:gpuscience.comhpcu-s-department-of-energy-magellan-project-report-role-of-cloud-computing-in-science External link ), HostingTecNews.com ( http:...

  5. A primeval Magellanic Stream and others

    SciTech Connect (OSTI)

    Peebles, P. J. E. [Joseph Henry Laboratories, Princeton University, Princeton, NJ 08544 (United States); Tully, R. Brent [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States)

    2013-12-01

    The Magellanic Stream (MS) might have grown out of tidal interactions at high redshift, when the young galaxies were close together, rather than from later interactions among the Magellanic Clouds and Milky Way (MW). This is illustrated in solutions for the orbits of Local Group (LG) galaxies under the cosmological condition of growing peculiar velocities at high redshift. Massless test particles initially near and moving with the Large Magellanic Cloud in these solutions end up with distributions in angular position and redshift similar to the MS, though with the usual overly prominent leading component that the MW corona might have suppressed. Another possible example of the effect of conditions at high redshift is a model primeval stream around the LG galaxy NGC 6822. Depending on the solution for LG dynamics, this primeval stream can end up with a position angle similar to the H I around this galaxy and a redshift gradient in the observed direction. The gradient is much smaller than observed but might have been increased by dissipative contraction. Presented also is an even more speculative illustration of the possible effect of initial conditions, primeval stellar streams around M31.

  6. The Magellan Final Report on Cloud Computing

    SciTech Connect (OSTI)

    ,; Coghlan, Susan; Yelick, Katherine

    2011-12-21

    The goal of Magellan, a project funded through the U.S. Department of Energy (DOE) Office of Advanced Scientific Computing Research (ASCR), was to investigate the potential role of cloud computing in addressing the computing needs for the DOE Office of Science (SC), particularly related to serving the needs of mid- range computing and future data-intensive computing workloads. A set of research questions was formed to probe various aspects of cloud computing from performance, usability, and cost. To address these questions, a distributed testbed infrastructure was deployed at the Argonne Leadership Computing Facility (ALCF) and the National Energy Research Scientific Computing Center (NERSC). The testbed was designed to be flexible and capable enough to explore a variety of computing models and hardware design points in order to understand the impact for various scientific applications. During the project, the testbed also served as a valuable resource to application scientists. Applications from a diverse set of projects such as MG-RAST (a metagenomics analysis server), the Joint Genome Institute, the STAR experiment at the Relativistic Heavy Ion Collider, and the Laser Interferometer Gravitational Wave Observatory (LIGO), were used by the Magellan project for benchmarking within the cloud, but the project teams were also able to accomplish important production science utilizing the Magellan cloud resources.

  7. The iron abundance of the Magellanic Bridge

    E-Print Network [OSTI]

    P. L. Dufton; R. S. I. Ryans; H. M. A. Thompson; R. A. Street

    2008-02-01

    High-resolution HST ultra-violet spectra for five B-type stars in the Magellanic Bridge and in the Large and Small Magellanic Clouds have been analysed to estimate their iron abundances. Those for the Clouds are lower than estimates obtained from late-type stars or the optical lines in B-type stars by approximately 0.5 dex. This may be due to systematic errors possibly arising from non-LTE effects or from errors in the atomic data as similar low Fe abundances having previously been reported from the analysis of the ultra-violet spectra of Galactic early-type stars. The iron abundance estimates for all three Bridge targets appear to be significantly lower than those found for the SMC and LMC by approximately -0.5 dex and -0.8 dex respectively and these differential results should not be affected by any systematic errors present in the absolute abundance estimates. These differential iron abundance estimates are consistent with the underabundances for C, N, O, Mg and Si of approximately -1.1 dex relative to our Galaxy previously found in our Bridge targets. The implications of these very low metal abundances for the Magellanic Bridge are discussed in terms of metal deficient material being stripped from the SMC.

  8. Magellan at NERSC Progress Report for June 2010

    SciTech Connect (OSTI)

    Canon, R. Shane; Broughton, Jeff; Draney, Brent; Jackson, Keith

    2010-06-30

    The Magellan Project was funded by the American Recovery and Reinvestment Act to investigate the applicability of cloud computing for the Department of Energy's Office of Science (DOE-SC). This report covers the progress for the Magellan Project at NERSC since it began in September 2009and focuses on the research aspects of the project.

  9. Magellan Resources Group LLC | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History View NewTexas:Montezuma,Information MHKMHK5 <Kentucky:York: Energy ResourcesMagellan

  10. Utilisation des défibrillateurs

    ScienceCinema (OSTI)

    None

    2011-10-06

    Information faite par le service medical et le service des pompiers sur l'utilisation des defibrillateurs.

  11. The Magellanic Stream: Circumnavigating the Galaxy

    E-Print Network [OSTI]

    D'Onghia, Elena

    2015-01-01

    The Magellanic Clouds are surrounded by an extended network of gaseous structures. Chief among these is the Magellanic Stream, an interwoven tail of filaments trailing the Clouds in their orbit around the Milky Way. When considered in tandem with its Leading Arm, the Stream stretches over 200 degrees on the sky. Thought to represent the result of tidal interactions between the Clouds and ram-pressure forces exerted by the Galactic corona, its kinematic properties reflect the dynamical history of the closest pair of dwarf galaxies to the Milky Way. The Stream is a benchmark for hydrodynamical simulations of accreting gas and cloud/corona interactions. If the Stream survives these interactions and arrives safely in the Galactic disk, its cargo of over a billion solar masses of gas has the potential to maintain or elevate the Galactic star formation rate. In this article, we review the current state of knowledge of the Stream, including its chemical composition, physical conditions, origin, and fate. We also rev...

  12. OGLE-ing the Magellanic system: stellar populations in the Magellanic Bridge

    SciTech Connect (OSTI)

    Skowron, D. M.; Jacyszyn, A. M.; Udalski, A.; Szyma?ski, M. K.; Skowron, J.; Poleski, R.; Koz?owski, S.; Kubiak, M.; Pietrzy?ski, G.; Soszy?ski, I.; Mróz, P.; Pietrukowicz, P.; Ulaczyk, K.; Wyrzykowski, ?., E-mail: dszczyg@astrouw.edu.pl [Warsaw University Astronomical Observatory, Aleje Ujazdowskie 4, 00-478 Warszawa (Poland)

    2014-11-10

    We report the discovery of a young stellar bridge that forms a continuous connection between the Magellanic Clouds. This finding is based on number density maps for stellar populations found in data gathered by OGLE-IV that fully cover over 270 deg{sup 2} of the sky in the Magellanic Bridge area. This is the most extensive optical survey of this region to date. We find that the young population is present mainly in the western half of the MBR, which, together with the newly discovered young population in the eastern Bridge, form a continuous stream of stars connecting both galaxies along ? ? –73.5 deg. The young population distribution is clumped, with one of the major densities close to the SMC and the other fairly isolated and located approximately mid-way between the Clouds, which we call the OGLE island. These overdensities are well matched by H I surface density contours, although the newly found young population in the eastern Bridge is offset by ?2 deg north from the highest H I density contour. We observe a continuity of red clump stars between the Magellanic Clouds which represent an intermediate-age population. Red clump stars are present mainly in the southern and central parts of the Magellanic Bridge, below its gaseous part, and their presence is reflected by a strong deviation from the radial density profiles of the two galaxies. This may indicate either a tidal stream of stars, or that the stellar halos of the two galaxies overlap. On the other hand, we do not observe such an overlap within an intermediate-age population represented by the top of the red giant branch and the asymptotic giant branch stars. We also see only minor mixing of the old populations of the Clouds in the southern part of the Bridge, represented by the lowest part of the red giant branch.

  13. The FIRE infrared spectrometer at Magellan: construction and commissioning

    E-Print Network [OSTI]

    Simcoe, Robert A.

    We describe the construction and commissioning of FIRE, a new 0.8-2.5?m echelle spectrometer for the Magellan/ Baade 6.5 meter telescope. FIRE delivers continuous spectra over its full bandpass with nominal spectral ...

  14. Magellan at NERSC Progress Report for June 2010

    E-Print Network [OSTI]

    Broughton, Richard Canon, Lavanya Ramakrishnan, Brent Draney, Jeff

    2011-01-01

    Interface . . . . . . . . . . . 4.1.5 Eucalyptus Accounting11] D. Nurmi and et al. Eucalyptus:A Technical Report on anMagellan Progress Report Eucalyptus is open source software

  15. Magellan: experiences from a Science Cloud

    SciTech Connect (OSTI)

    Ramakrishnan, Lavanya; Zbiegel, Piotr; Campbell, Scott; Bradshaw, Rick; Canon, Richard; Coghlan, Susan; Sakrejda, Iwona; Desai, Narayan; Declerck, Tina; Liu, Anping

    2011-02-02

    Cloud resources promise to be an avenue to address new categories of scientific applications including data-intensive science applications, on-demand/surge computing, and applications that require customized software environments. However, there is a limited understanding on how to operate and use clouds for scientific applications. Magellan, a project funded through the Department of Energy?s (DOE) Advanced Scientific Computing Research (ASCR) program, is investigating the use of cloud computing for science at the Argonne Leadership Computing Facility (ALCF) and the National Energy Research Scientific Computing Facility (NERSC). In this paper, we detail the experiences to date at both sites and identify the gaps and open challenges from both a resource provider as well as application perspective.

  16. Ha Emission from the Magellanic Bridge

    E-Print Network [OSTI]

    E. Muller; Q. Parker

    2007-06-27

    We present here a preliminary report and commentary of recently processed observations of Ha emission towards the Magellanic Bridge. These data have been analysed in an attempt to quantify the extent to which the stellar population is capable of reshaping the local ISM. We find that the Ha emission regions are small, weak and sparsely distributed, consistent with a relatively quiescent and inactive ISM where radiative and collisional ionisation is inefficient and sporadic. This suggests that energetic processes at the small scale (i.e. ~tens of pc) do not dominate the energy balance within the ISM of the Bridge, which therefore hosts a pristine turbulent structure, otherwise inaccessible within our own Galaxy. We find Ha emission that is well correlated with detected 12CO(1-0) line emission (a proxy for molecular hydrogen), as well as other easily identified ring-like HI features.

  17. The Magellanic Group and the Seven Dwarfs

    E-Print Network [OSTI]

    Elena D'Onghia; George Lake

    2008-09-22

    The Magellanic Clouds were the largest members of a group of dwarf galaxies that entered the Milky Way (MW) halo at late times. This group, dominated by the LMC, contained ~4% of the mass of the Milky Way prior to its accretion and tidal disruption, but ~70% of the known dwarfs orbiting the MW. Our theory addresses many outstanding problems in galaxy formation associated with dwarf galaxies. First, it can explain the planar orbital configuration populated by some dSphs in the MW. Second, it provides a mechanism for lighting up a subset of dwarf galaxies to reproduce the cumulative circular velocity distribution of the satellites in the MW. Finally, our model predicts that most dwarfs will be found in association with other dwarfs. The recent discovery of Leo V (Belokurov et al. 2008), a dwarf spheroidal companion of Leo IV, and the nearby dwarf associations supports our hypothesis.

  18. PROMOTIONSORDNUNG des Fachbereichs Rechtswissenschaften

    E-Print Network [OSTI]

    Kallenrode, May-Britt

    . Sitzung des Senats am 10.07.2002 Genehmigung des Präsidenten gemäß § 80a NHG vom 17.07.2002 AMBl. der

  19. Galactic and Magellanic Evolution with the SKA

    E-Print Network [OSTI]

    McClure-Griffiths, Naomi M; Murray, Claire E; Li, Di; Dickey, John M; Vazquez-Semadeni, Enrique; Peek, Josh E G; Putman, Mary; Clark, Susan E; Miville-Deschenes, Marc-Antoine; Bland-Hawthorn, Joss; Staveley-Smith, Lister

    2015-01-01

    As we strive to understand how galaxies evolve it is crucial that we resolve physical processes and test emerging theories in nearby systems that we can observe in great detail. Our own Galaxy, the Milky Way, and the nearby Magellanic Clouds provide unique windows into the evolution of galaxies, each with its own metallicity and star formation rate. These laboratories allow us to study with more detail than anywhere else in the Universe how galaxies acquire fresh gas to fuel their continuing star formation, how they exchange gas with the surrounding intergalactic medium, and turn warm, diffuse gas into molecular clouds and ultimately stars. The $\\lambda$21-cm line of atomic hydrogen (HI) is an excellent tracer of these physical processes. With the SKA we will finally have the combination of surface brightness sensitivity, point source sensitivity and angular resolution to transform our understanding of the evolution of gas in the Milky Way, all the way from the halo down to the formation of individual molecul...

  20. Chemical evolution of the Large Magellanic Cloud

    E-Print Network [OSTI]

    Bekki, Kenji

    2012-01-01

    We adopt a new chemical evolution model for the Large Magellanic Cloud (LMC) and thereby investigate its past star formation and chemical enrichment histories. The delay time distribution of type Ia supernovae recently revealed by type Ia supernova surveys is incorporated self-consistently into the new model. The principle results are summarized as follows. The present gas mass fraction and stellar metallicity as well as the higher [Ba/Fe] in metal-poor stars at [Fe/H] 0.3) at [Fe/H] ~ -0.6 and higher [Ba/Fe] (>0.5) at [Fe/H] ~ -0.3 can be due to significantly enhanced star formation about 2 Gyr ago. The observed overall [Ca/Fe]-[Fe/H] relation and remarkably low [Ca/Fe] (-0.6 are consistent with models with short-delay supernova Ia and with the more efficient loss of Ca possibly caused by an explosion mechanism of type II supernovae. Although the metallicity distribution functions do not show double peaks in the models with a starburst about 2 Gyr ago, they show characteristic double peaks in the models with...

  1. CHEMICAL EVOLUTION OF THE LARGE MAGELLANIC CLOUD

    SciTech Connect (OSTI)

    Bekki, Kenji [ICRAR, M468, University of Western Australia, 35 Stirling Highway, Crawley Western Australia 6009 (Australia); Tsujimoto, Takuji [National Astronomical Observatory of Japan, Mitaka-shi, Tokyo 181-8588 (Japan)

    2012-12-20

    We adopt a new chemical evolution model for the Large Magellanic Cloud (LMC) and thereby investigate its past star formation and chemical enrichment histories. The delay time distribution of Type Ia supernovae recently revealed by Type Ia supernova surveys is incorporated self-consistently into the new model. The principle results are summarized as follows. The present gas mass fraction and stellar metallicity as well as the higher [Ba/Fe] in metal-poor stars at [Fe/H] < -1.5 can be more self-consistently explained by models with steeper initial mass functions. The observed higher [Mg/Fe] ({>=}0.3) at [Fe/H] {approx} -0.6 and higher [Ba/Fe] (>0.5) at [Fe/H] {approx} -0.3 could be due to significantly enhanced star formation about 2 Gyr ago. The observed overall [Ca/Fe]-[Fe/H] relation and remarkably low [Ca/Fe] (< - 0.2) at [Fe/H] > -0.6 are consistent with models with short-delay supernova Ia and with the more efficient loss of Ca possibly caused by an explosion mechanism of Type II supernovae. Although the metallicity distribution functions do not show double peaks in the models with a starburst about 2 Gyr ago, they show characteristic double peaks in the models with double starbursts {approx}200 Myr and {approx}2 Gyr ago. The observed apparent dip of [Fe/H] around {approx}1.5 Gyr ago in the age-metallicity relation can be reproduced by models in which a large amount ({approx}10{sup 9} M{sub Sun }) of metal-poor ([Fe/H] < -1) gas can be accreted onto the LMC.

  2. Scaling relations for molecular gas in the Large Magellanic Cloud

    E-Print Network [OSTI]

    Hardcastle, Martin

    Scaling relations for molecular gas in the Large Magellanic Cloud By A r t o H e i kk i l ¨a e (virial mass versus CO luminosity, luminosity versus size, linewidth versus size) for molecular clouds in the 30 Dor and N 159 regions in the Large Magel­ lanic Cloud. The analysis is based on CO J = 1 ! 0

  3. THE MAGELLANIC INTER-CLOUD PROJECT (MAGIC). I. EVIDENCE FOR INTERMEDIATE-AGE STELLAR POPULATIONS IN BETWEEN THE MAGELLANIC CLOUDS

    SciTech Connect (OSTI)

    Noeel, N. E. D.; Read, J. I. [ETH Zuerich, Institute for Astronomy, Wolfgang-Pauli-Strasse 27, CH-8093 Zuerich (Switzerland); Conn, B. C.; Rix, H.-W. [Max Planck Institut fuer Astronomie, Koenigstuhl 17, D-69117, Heidelberg (Germany); Carrera, R. [Instituto de Astrofisica de Canarias, C/Via Lactea s/n, E-38200, La Laguna, Tenerife (Spain); Dolphin, A., E-mail: noelia@phys.ethz.ch [Raytheon Company, P.O. Box 11337, Tucson, AZ 85734-1337 (United States)

    2013-05-10

    The origin of the gas in between the Magellanic Clouds (MCs)-known as the ''Magellanic Bridge'' (MB)-is puzzling. Numerical simulations suggest that the MB formed from tidally stripped gas and stars in a recent interaction between the MCs. However, the apparent lack of stripped intermediate- or old-age stars associated with the MB is at odds with this picture. In this paper, we present the first results from the MAGellanic Inter-Cloud program (MAGIC) aimed at probing the stellar populations in the inter-Cloud region. We present observations of the stellar populations in two large fields located in between the Large and Small Magellanic Clouds (LMC/SMC), secured using the WFI camera on the 2.2 m telescope in La Silla. Using a synthetic color-magnitude diagram technique, we present the first quantitative evidence for the presence of intermediate-age and old stars in the inter-Cloud region. The intermediate-age stars-which make up {approx}28% of all stars in the region-are not present in fields at a similar distance from the SMC in a direction pointing away from the LMC. This provides potential evidence that these intermediate-age stars could have been tidally stripped from the SMC. However, spectroscopic studies will be needed to confirm or rule out the tidal origin for the inter-Cloud gas and stars.

  4. Herbig Ae/Be Stars in the Magellanic Bridge

    E-Print Network [OSTI]

    Shogo Nishiyama; Yasuaki Haba; Daisuke Kato; Daisuke Baba; Hirofumi Hatano; Motohide Tamura; Yasushi Nakajima; Akika Ishihara; Tetsuya Nagata; Koji Sugitani; Noriyuki Matsunaga; Hinako Fukushi; Nobuhiko Kusakabe; Shuji Sato

    2007-02-20

    We have found Herbig Ae/Be star candidates in the western region of the Magellanic Bridge. Using the near infrared camera SIRIUS and the 1.4 m telescope IRSF, we surveyed about 3.0 deg x 1.3 deg (24 deg Bridge, we estimate that about 80 (about 40%) of the candidates are likely to be Herbig Ae/Be stars. We also found one concentration of the candidates at the young star cluster NGC 796, strongly suggesting the existence of pre-main-sequence (PMS) stars in the Magellanic Bridge. This is the first detection of PMS star candidates in the Magellanic Bridge, and if they are genuine PMS stars, this could be direct evidence of recent star formation. However, the estimate of the number of Herbig Ae/Be stars depends on the fraction of classical Be stars, and thus a more precise determination of the Be star fraction or observations to differentiate between the Herbig Ae/Be stars and classical Be stars are required.

  5. Proper Motion Study of the Magellanic Clouds using SPM material

    E-Print Network [OSTI]

    Katherine, Vieira; William, van Altena; Norbert, Zacharias; Dana, Casetti-Dinescu; Vladimir, Korchagin; Imants, Platais; David, Monet; Carlos, Lopez

    2010-01-01

    Absolute proper motions are determined for stars and galaxies to V=17.5 over a 450 square-degree area that encloses both Magellanic Clouds. The proper motions are based on photographic and CCD observations of the Yale/San Juan Southern Proper Motion program, which span over a baseline of 40 years. Multiple, local relative proper motion measures are combined in an overlap solution using photometrically selected Galactic Disk stars to define a global relative system that is then transformed to absolute using external galaxies and Hipparcos stars to tie into the ICRS. The resulting catalog of 1.4 million objects is used to derive the mean absolute proper motions of the Large Magellanic Cloud and the Small Magellanic Cloud; $(\\mu_\\alpha\\cos\\delta,\\mu_\\delta)_{LMC}=(1.89,+0.39)\\pm (0.27,0.27)\\;\\;\\{mas yr}^{-1}$ and $(\\mu_\\alpha\\cos\\delta,\\mu_\\delta)_{SMC}=(0.98,-1.01)\\pm (0.30,0.29)\\;\\;\\{mas yr}^{-1}$. These mean motions are based on best-measured samples of 3822 LMC stars and 964 SMC stars. A dominant portion (0....

  6. Ausschreibung des Heinz Nixdorf Instituts

    E-Print Network [OSTI]

    Noé, Reinhold

    Einsatzbereich: Zur praktischen Untersuchung des Energiemanagements im RailCab sollen die Prüf- stände der Grundvoraussetzung des Energiemanagements des RailCabs dar. Die Informationsverarbeitung der Prüfstände läuft auf

  7. Direction des ressources humaines Mission Insertion Handicap -procdure officielle 15/03/2013 Fiche de poste pour le recrutement par la voie contractuelle

    E-Print Network [OSTI]

    van Tiggelen, Bart

    exemple) ; · Connaissance d'au moins un langage de traitement de données (Matlab, Python par exemple

  8. tude des impacts des changements anthropiques sur la frquence et l'intensit des vnements

    E-Print Network [OSTI]

    les centres des régimes d'ERA40 Espace des Composantes Principales: C1 C2 C3 C4 Jo Distance entre Ci

  9. The Magellanic Bridge: The Nearest Purely Tidal Stellar Population

    E-Print Network [OSTI]

    Jason Harris

    2006-12-04

    We report on observations of the stellar populations in twelve fields spanning the region between the Magellanic Clouds, made with the Mosaic-II camera on the 4-meter telescope at the Cerro-Tololo Inter-American Observatory. The two main goals of the observations are to characterize the young stellar population (which presumably formed in situ in the Bridge and therefore represents the nearest stellar population formed from tidal debris), and to search for an older stellar component (which would have been stripped from either Cloud as stars, by the same tidal forces which formed the gaseous Bridge). We determine the star-formation history of the young inter-Cloud population, which provides a constraint on the timing of the gravitational interaction which formed the Bridge. We do not detect an older stellar population belonging to the Bridge in any of our fields, implying that the material that was stripped from the Clouds to form the Magellanic Bridge was very nearly a pure gas.

  10. Metallicity and Physical Conditions in the Magellanic Bridge

    E-Print Network [OSTI]

    N. Lehner; J. C. Howk; F. P. Keenan; J. V. Smoker

    2008-01-16

    We present a new analysis of the diffuse gas in the Magellanic Bridge (RA>3h) based on HST/STIS E140M and FUSE spectra of 2 early-type stars lying within the Bridge and a QSO behind it. We derive the column densities of HI (from Ly\\alpha), NI, OI, ArI, SiII, SII, and FeII of the gas in the Bridge. Using the atomic species, we determine the first gas-phase metallicity of the Magellanic Bridge, [Z/H]=-1.02+/-0.07 toward one sightline, and -1.7Bridge gas along our three lines of sight is ~70-90% ionized, despite high HI columns, logN(HI)=19.6-20.1. Possible sources for the ongoing ionization are certainly the hot stars within the Bridge, hot gas (revealed by OVI absorption), and leaking photons from the SMC and LMC. From the analysis of CII*, we deduce that the overall density of the Bridge must be low (<0.03-0.1 cm^-3). We argue that our findings combined with other recent observational results should motivate new models of the evolution of the SMC-LMC-Galaxy system.

  11. Jahresbericht des Instituts fr Kognitionswissenschaft

    E-Print Network [OSTI]

    Kallenrode, May-Britt

    ambitionierten weiteren Antrag im Rahmen des "Niedersächsischen Vorab der Volkswagen Stiftung" zu nennen

  12. The Magellanic Stream System: I. Ram-pressure tails and the relics of the collision between the Magellanic Clouds

    E-Print Network [OSTI]

    Hammer, F; Flores, H; Puech, M; Fouquet, S

    2015-01-01

    We have analyzed the Magellanic Stream (MS) using the deepest and the most resolved HI survey of the Southern Hemisphere (GASS). The overall Stream is structured into two filaments suggesting two ram-pressure tails lagging behind the Magellanic Clouds (MCs), and resembling two close, transonic, von Karman vortex streets. The past motions of the Clouds appear imprinted in them, implying almost parallel initial orbits, and then a radical change after their passage near the N(HI) peak of the MS. This is consistent with a recent collision between the MCs, 200-300 Myr ago, which has stripped further their gas into small clouds, spreading them out along a gigantic bow-shock, perpendicular to the MS. The Stream is formed by the interplay between stellar feedback and the ram-pressure exerted by Milky Way (MW) halo hot gas with $n_h$= $10^{-4}$ $cm^{-3}$ at 50-70 kpc, a value necessary for explaining the MS multiphase high-velocity clouds. The corresponding hydrodynamical modeling provides the currently most accurate ...

  13. A Calibrated Measurement of the Near-IR Continuum Sky Brightness Using Magellan/FIRE

    E-Print Network [OSTI]

    Sullivan, Peter William

    We characterize the near-IR sky background from 308 observations with the Folded-port InfraRed Echellette (FIRE) spectrograph at Magellan. A subset of 105 observations selected to minimize lunar and thermal effects gives ...

  14. MASE: A New Data-Reduction Pipeline for the Magellan Echellette Spectrograph

    E-Print Network [OSTI]

    Murphy, Michael T.

    We introduce a data-reduction package written in Interactive Data Language (IDL) for the Magellan Echellete Spectrograph (MAGE). MAGE is a medium-resolution (R 4100), cross-dispersed, optical spectrograph, with coverage ...

  15. STAR FORMATION AROUND SUPERGIANT SHELLS IN THE LARGE MAGELLANIC CLOUD

    SciTech Connect (OSTI)

    Book, Laura G.; Chu Youhua; Gruendl, Robert A.; Fukui, Yasuo

    2009-03-15

    We examine the recent star formation associated with four supergiant shells in the Large Magellanic Cloud (LMC): LMC 1, 4, 5, and 6, which have been shown to have simple expanding-shell structures. H II regions and OB associations are used to infer star formation in the last few Myr, while massive young stellar objects reveal the current ongoing star formation. Distributions of ionized H I and molecular components of the interstellar gas are compared with the sites of recent and current star formation to determine whether triggering has taken place. We find that a great majority of the current star formation has occurred in gravitationally unstable regions, and that evidence of triggered star formation is prevalent at both large and local scales.

  16. Qualit des composts et des digestats Fabienne MULLER

    E-Print Network [OSTI]

    Boyer, Edmond

    Qualité des composts et des digestats Fabienne MULLER Direction consommation durable et déchets organiques se construit, avec aujourd'hui le développement important de la méthanisation. Les composts actuellement produits, peuvent l'être avec des digestats ou non. Les quantités de compost produit ne cessent d

  17. Massive runaway stars in the Small Magellanic Cloud

    E-Print Network [OSTI]

    Gvaramadze, V V; Kroupa, P

    2010-01-01

    Using archival Spitzer Space Telescope data, we identified for the first time a dozen runaway OB stars in the Small Magellanic Cloud (SMC) via detection of their bow shocks. The geometry of detected bow shocks allows us to infer the direction of motion of the associated stars and to determine their possible parent clusters and associations. One of the identified runaway stars, AzV 471, was already known as a high-velocity star on the basis of its high peculiar radial velocity, which is offset by ~40 km/s from the local systemic velocity. We discuss implications of our findings for the problem of the origin of field OB stars. Several of the bow shock-producing stars are found in the confines of associations suggesting that these may be "alien" stars contributing to the observed age spread in such associations. We also report the discovery of a kidney-shaped nebula attached to the early WN-type star SMC-WR3 (AzV 60a). We interpreted this nebula as an interstellar structure created owing to the interaction betwe...

  18. MITTEILUNGSBLATT DES REKTORS

    E-Print Network [OSTI]

    Heermann, Dieter W.

    Heidelberg Mitteilungsblatt Nr. 19 / 2015 12.10.2015 Aufhebung des Master-Studienganges Unternehmensführung. Ingrid Reiher Dezernat 2 #12;1398 Universität Heidelberg Mitteilungsblatt Nr. 19 / 2015 12.10.2015 #12;1399 Universität Heidelberg Mitteilungsblatt Nr. 19 / 2015 12.10.2015 Promotionsordnung der Universität Heidelberg

  19. Rapport annuel Table des matires

    E-Print Network [OSTI]

    Laval, Université

    efficace et efficiente. Il présente des balises très utiles pour nous permettre de revoir notre gestion

  20. V(RI)sub(c) Photometry of Cepheids in the Magellanic Clouds

    E-Print Network [OSTI]

    T. Barnes; I. Ivans; J. Martin; C. Froning; T. Moffett

    1999-04-12

    We present V(RI)sub data for thirteen Cepheids in the Large Magellanic Cloud ans fifty-five in each wavelength band. The median uncertainty in the photometry iy Moffett, Gieren & Barnes (1998) which contained 1000 measures ($\\pm 0.01$ mag) in each wavelength band on 22 variables with periods in the range 8--133 days.

  1. Mapping atomic and diffuse interstellar band absorption across the Magellanic Clouds and the Milky Way

    E-Print Network [OSTI]

    Bailey, Mandy; Sarre, Peter J; Beckman, John E

    2015-01-01

    Diffuse interstellar bands (DIBs) trace warm neutral and weakly-ionized diffuse interstellar medium (ISM). Here we present a dedicated, high signal-to-noise spectroscopic study of two of the strongest DIBs, at 5780 and 5797 \\AA, in optical spectra of 666 early-type stars in the Small and Large Magellanic Clouds, along with measurements of the atomic Na\\,{\\sc i}\\,D and Ca\\,{\\sc ii}\\,K lines. The resulting maps show for the first time the distribution of DIB carriers across large swathes of galaxies, as well as the foreground Milky Way ISM. We confirm the association of the 5797 \\AA\\ DIB with neutral gas, and the 5780 \\AA\\ DIB with more translucent gas, generally tracing the star-forming regions within the Magellanic Clouds. Likewise, the Na\\,{\\sc i}\\,D line traces the denser ISM whereas the Ca\\,{\\sc ii}\\,K line traces the more diffuse, warmer gas. The Ca\\,{\\sc ii}\\,K line has an additional component at $\\sim200$--220 km s$^{-1}$ seen towards both Magellanic Clouds; this may be associated with a pan-Magellanic ...

  2. Bibliothques de Lyon 1 Prsentation des ressources et des services

    E-Print Network [OSTI]

    Maume-Deschamps, Véronique

    1 Bibliothèques de Lyon 1 Présentation des ressources et des services Internes de Médecine Générale 2014-15 Le jeudi 7 octobre 2014 #12;2 LES BIBLIOTHEQUES DE LYON 1 Un réseau de 9 bibliothèques articulé thèses · Vous connecter aux postes informatiques de Lyon 1 et accéder à la documentation en ligne hors

  3. Sécurité au-delà des mythes et des croyances

    ScienceCinema (OSTI)

    None

    2011-10-06

    Présentation orale en français, support visuel en français et en anglais. La pire des failles de sécurité est l'impression de sécurité. Le décalage entre la compréhension que l?on a des technologies utilisées, et leurs potentiels réels, ainsi que l'impact potentiellement négatif qu'elles peuvent avoir sur nos vies, n'est pas toujours compris, ou pris en compte par la plupart d'entre-nous. On se contente de nos perceptions pour ne pas avoir à se confronter à la réalité... Alors qu'en est-il vraiment ? En matière de sécurité qui de l'humain ou des technologies a le contrôle ?

  4. The Turbulence Velocity Power Spectrum of Neutral Hydrogen in the Small Magellanic Cloud

    E-Print Network [OSTI]

    Chepurnov, Alexey; Lazarian, Alex; Stanimirovic, Snezana

    2015-01-01

    We present the results of the Velocity Coordinate Spectrum (VCS) technique to calculate the velocity power spectrum of turbulence in the Small Magellanic Cloud (SMC) in 21cm emission. We have obtained a velocity spectral index of -3.85 and an injection scale of 2.3 kpc. The spectral index is steeper than the Kolmogorov index which is expected for shock-dominated turbulence which is in agreement with past works on the SMC gas dynamics. The injection scale of 2.3 kpc suggests that tidal interactions with the Large Magellanic Cloud are the dominate driver of turbulence in this dwarf galaxy. This implies turbulence maybe driven by multiple mechanisms in galaxies in addition to supernova injection and that galaxy-galaxy interactions may play an important role.

  5. Spectral Variations of Of?p Oblique Magnetic Rotator Candidates in the Magellanic Clouds

    E-Print Network [OSTI]

    Walborn, Nolan R; Naze, Yael; Wade, Gregg A; Bagnulo, Stefano; Barba, Rodolfo H; Apellaniz, Jesus Maiz; Howarth, Ian D; Evans, Christopher J; Sota, Alfredo

    2015-01-01

    Optical spectroscopic monitoring has been conducted of two O stars in the Small and one in the Large Magellanic Cloud, the spectral characteristics of which place them in the Of?p category, which has been established in the Galaxy to consist of oblique magnetic rotators. All of these Magellanic stars show systematic spectral variations typical of the Of?p class, further strengthening their magnetic candidacy to the point of virtual certainty. The spectral variations are related to photometric variations derived from OGLE data by Naze et al. (2015) in a parallel study, which yields rotational periods for two of them. Now circular spectropolarimetry is required to measure their fields, and ultraviolet spectroscopy to further characterize their low-metallicity, magnetically confined winds, in support of hydrodynamical analyses.

  6. Proceedings of the Bonn/Bochum-Graduiertenkolleg Workshop 'The Magellanic Clouds and Other Dwarf Galaxies'

    E-Print Network [OSTI]

    Tom Richtler; Jochen M. Braun

    1998-11-27

    The Workshop 'The Magellanic Clouds and Other Dwarf Galaxies' was held at the Physikzentrum Bad Honnef in January 1998. The proceedings comprise 79 contributions. About 1/3 of the 352 pages contain the following Reviews: The Violent Interstellar Medium in Dwarf Galaxies: Atomic Gas (Elias Brinks and Fabian Walter), Hot Gas in the Large Magellanic Cloud (You-Hua Chu), Astrophysics of Dwarf Galaxies: Structures and Stellar Populations (John S. Gallagher), Star-forming regions and ionized gas in irregular galaxies (Deidre A. Hunter), The Law of Star Formation in Disk Galaxies (Joachim Koeppen), Strange Dark Matters in Nearby Dwarf Galaxies (Mario Mateo), Holes and Shells in Galaxies: Observations versus Theoretical Concepts (Jan Palous), Detailed Recent Star Formation Histories of Dwarf Irregular Galaxies and Their Many Uses (Evan D. Skillman et al.), and Nearby Young Dwarf Galaxies (Trinh X. Thuan and Yuri I. Izotov). See the complete electronic version for further details.

  7. QFDES(3) QFDES(3) qfDES -a library of DES utilities

    E-Print Network [OSTI]

    Bhatti, Saleem N.

    DES_ECB_d(key, data, size) int qfDES_CBC_e(key, data, size, initVec), qfDES_CBC_d(key, data, size, initVec) int qfDES_CFB_e(key, data, size, initVec), qfDES_CFB_d(key, data, size, initVec) int qfDES_OFB_e(key, data, size, init (Electronic Code Book), CBC (Cipher Block Chaining), Cipher Feedback(CFB) or Ouput Feedback (OFB). CFB and OFB

  8. Neon and Sulfur Abundances of Planetary Nebulae in the Magellanic Clouds

    E-Print Network [OSTI]

    J. Bernard-Salas; S. R. Pottasch; S. Gutenkunst; P. W. Morris; J. R. Houck

    2007-09-20

    The chemical abundances of neon and sulfur for 25 planetary nebulae (PNe) in the Magellanic Clouds are presented. These abundances have been derived using mainly infrared data from the Spitzer Space Telescope. The implications for the chemical evolution of these elements are discussed. A comparison with similarly obtained abundances of Galactic PNe and HII regions and Magellanic Clouds HII regions is also given. The average neon abundances are 6.0x10(-5) and 2.7x10(-5) for the PNe in the Large and Small Magellanic Clouds respectively. These are ~1/3 and 1/6 of the average abundances of Galactic planetary nebulae to which we compare. The average sulfur abundances for the LMC and SMC are respectively 2.7x10(-6) and 1.0x10(-6). The Ne/S ratio (23.5) is on average higher than the ratio found in Galactic PNe (16) but the range of values in both data sets is similar for most of the objects. The neon abundances found in PNe and HII regions agree with each other. It is possible that a few (3-4) of the PNe in the sample have experienced some neon enrichment, but for two of these objects the high Ne/S ratio can be explained by their very low sulfur abundances. The neon and sulfur abundances derived in this paper are also compared to previously published abundances using optical data and photo-ionization models.

  9. Information -Communication Communication des entreprises

    E-Print Network [OSTI]

    Sart, Remi

    Information - Communication 2 PARCOURS Communication des entreprises Communication et solidarité;2 Information - Communication UFR Langues Appliquées, Commerce et Communication PRÉSENTATION Objectifs La Licence Information et communication est destinée aux étudiants qui souhaitent suivre un parcours

  10. The COS/UVES absorption survey of the Magellanic stream. III. Ionization, total mass, and inflow rate onto the Milky Way

    SciTech Connect (OSTI)

    Fox, Andrew J.; Thom, Christopher; Tumlinson, Jason; Ely, Justin; Kumari, Nimisha [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Wakker, Bart P.; Hernandez, Audra K.; Haffner, L. Matthew [Department of Astronomy, University of Wisconsin-Madison, 475 North Charter Street, Madison, WI 53706 (United States); Barger, Kathleen A.; Lehner, Nicolas; Howk, J. Christopher [Department of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, IN 46556 (United States); Richter, Philipp [Institut für Physik und Astronomie, Universität Potsdam, Haus 28, Karl-Liebknecht-Strasse 24/25, D-14476, Potsdam (Germany); Bland-Hawthorn, Joss [Institute of Astronomy, School of Physics, University of Sydney, Sydney, NSW 2006 (Australia); Charlton, Jane C. [Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States); Westmeier, Tobias [ICRAR, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 (Australia); Misawa, Toru [School of General Education, Shinshu University, 3-1-1 Asahi, Matsumoto, Nagano 390-8621 (Japan); Rodriguez-Hidalgo, Paola, E-mail: afox@stsci.edu [Department of Physics and Astronomy, York University, 4700 Keele Street, Toronto, ON M3J 1P3 (Canada)

    2014-06-01

    Dynamic interactions between the two Magellanic Clouds have flung large quantities of gas into the halo of the Milky Way. The result is a spectacular arrangement of gaseous structures, including the Magellanic Stream, the Magellanic Bridge, and the Leading Arm (collectively referred to as the Magellanic System). In this third paper of a series studying the Magellanic gas in absorption, we analyze the gas ionization level using a sample of 69 Hubble Space Telescope/Cosmic Origins Spectrograph sightlines that pass through or within 30° of the 21 cm emitting regions. We find that 81% (56/69) of the sightlines show UV absorption at Magellanic velocities, indicating that the total cross-section of the Magellanic System is ?11,000 deg{sup 2}, or around one-quarter of the entire sky. Using observations of the Si III/Si II ratio together with Cloudy photoionization modeling, we calculate the total gas mass (atomic plus ionized) of the Magellanic System to be ?2.0 × 10{sup 9} M {sub ?} (d/55 kpc){sup 2}, with the ionized gas contributing around three times as much mass as the atomic gas. This is larger than the current-day interstellar H I mass of both Magellanic Clouds combined, indicating that they have lost most of their initial gas mass. If the gas in the Magellanic System survives to reach the Galactic disk over its inflow time of ?0.5-1.0 Gyr, it will represent an average inflow rate of ?3.7-6.7 M {sub ?} yr{sup –1}, potentially raising the Galactic star formation rate. However, multiple signs of an evaporative interaction with the hot Galactic corona indicate that the Magellanic gas may not survive its journey to the disk fully intact and will instead add material to (and cool) the corona.

  11. Planification des infirmiers anesthsistes : analyse comparative des performances de diffrents solveurs

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 Planification des infirmiers anesthésistes : analyse comparative des performances de différents, Centre Hospitalier de Valence, 26000 Valence, France Résumé. L'affectation des infirmiers aux différentes nous penchons sur le problème de la planification des infirmiers anesthésistes du bloc opératoire, qui

  12. Symposium 06 Dynamique des composes minraux,

    E-Print Network [OSTI]

    Sparks, Donald L.

    zones hydromorphes ; 1'action des acides humiques sur 1'adsorption des phosphates sur la goethite ; et 1'utilisation de la microcalorimétrie pour étudier les mécanismes d'adsorption de Cd sur la goethite. L

  13. Gomodlisation et Informatique : Formalisation des reprsentations et

    E-Print Network [OSTI]

    Prié, Yannick

    -francois.rainaud@ifp.fr Laura S. Mastella Petrobras 330, Republica do Chile 20031 Rio de Janeiro Brésil laura.mastella@ petrobras.com.br RESUME Dans les projets d'ingénierie associant des experts métier et des informaticiens

  14. Les impacts cologiques des TIC Franoise BERTHOUD

    E-Print Network [OSTI]

    van Tiggelen, Bart

    Les impacts écologiques des TIC Françoise BERTHOUD (Francoise.Berthoud@grenoble.cnrs.fr) 9 avril 2014 ­ Lausanne ­ Conférence TICs Durables #12;2 Les TIC, sauveuses du monde face au réchauffement Effets structurels Que faire ? #12;7 Seulement 2% des matériaux utilisés pour la production des TIC se

  15. Diplme Universitaire MSSI Management de la Scurit des Systmes d'Information Le DU Management de la Scurit des Systmes d'Information s'adresse aux

    E-Print Network [OSTI]

    Di Girolami, Cristina

    -X Organisation et Menaces, gestion des identités, cryptologie, outils, nouvelles techologies et adaptation des

  16. Discovery of 16.6 and 25.5 s Pulsations from the Small Magellanic Cloud

    E-Print Network [OSTI]

    R. C. Lamb; D. J. Macomb; T. A. Prince; W. A. Majid

    2001-12-14

    We report the serendipitous detection of two previously unreported pulsars from the direction of the Small Magellanic Cloud, with periods of 16.6 and 25.5 seconds. The detections are based on archival PCA data from the Rossi X-ray Timing Explorer (RXTE). The observation leading to these detections occurred in September 2000 extending over 2.1 days with an exposure of 121 ks. A possible identification of the 16.6 s pulsar with an X-ray source RX J0051.8-7310 seen by both ROSAT and ASCA imaging X-ray satellites is presented.

  17. Three New Long Period X-ray Pulsars Discovered in the Small Magellanic Cloud

    E-Print Network [OSTI]

    D. J. Macomb; D. W. Fox; R. C. Lamb; T. A. Prince

    2003-01-04

    The Small Magellanic Cloud is increasingly an invaluable laboratory for studying accreting and isolated X-ray pulsars. We add to the class of compact SMC objects by reporting the discovery of three new long period X-ray pulsars detected with the {\\it Chandra X-ray Observatory}. The pulsars, with periods of 152, 304 and 565 seconds, all show hard X-ray spectra over the range from 0.6 - 7.5 keV. The source positions of the three pulsars are consistent with known H-alpha emission sources, indicating they are likely to be Be type X-ray binary star systems.

  18. The Relationship between CO Emission and Visual Extinction Traced by Dust Emission in the Magellanic Clouds

    E-Print Network [OSTI]

    Lee, Cheoljong; Schnee, Scott; Wong, Tony; Bolatto, Alberto D; Indebetouw, Remy; Rubio, Monica

    2015-01-01

    To test the theoretical understanding that finding bright CO emission depends primarily on dust shielding, we investigate the relationship between CO emission ($I_{\\rm CO}$) and the amount of dust (estimated from IR emission and expressed as "$A_V$") across the Large Magellanic Cloud, the Small Magellanic Cloud, and the Milky Way. We show that at our common resolution of 10 pc scales, $I_{\\rm CO}$ given a fixed line-of-sight $A_V$ is similar across all three systems despite the difference in metallicity. We find some evidence for a secondary dependence of $I_{\\rm CO}$ on radiation field; in the LMC, $I_{\\rm CO}$ at a given $A_V$ is smaller in regions of high $T_{\\rm dust}$, perhaps because of an increased photodissociating radiation field. We suggest a simple but useful picture in which the CO-to-H$_2$ conversion factor (\\xco) depends on two separable factors: (1) the distribution of gas column densities, which maps to an extinction distribution via a dust-to-gas ratio; and (2) the dependence of $I_{\\rm CO}$ ...

  19. MAGNETIC FIELD STRUCTURE OF THE LARGE MAGELLANIC CLOUD FROM FARADAY ROTATION MEASURES OF DIFFUSE POLARIZED EMISSION

    SciTech Connect (OSTI)

    Mao, S. A.; McClure-Griffiths, N. M.; McConnell, D.; Gaensler, B. M.; Haverkorn, M.; Beck, R.; Wolleben, M.; Stanimirovic, S.; Dickey, J. M.; Staveley-Smith, L.

    2012-11-01

    We present a study of the magnetic field of the Large Magellanic Cloud (LMC), carried out using diffuse polarized synchrotron emission data at 1.4 GHz acquired at the Parkes Radio Telescope and the Australia Telescope Compact Array. The observed diffuse polarized emission is likely to originate above the LMC disk on the near side of the galaxy. Consistent negative rotation measures (RMs) derived from the diffuse emission indicate that the line-of-sight magnetic field in the LMC's near-side halo is directed coherently away from us. In combination with RMs of extragalactic sources that lie behind the galaxy, we show that the LMC's large-scale magnetic field is likely to be of quadrupolar geometry, consistent with the prediction of dynamo theory. On smaller scales, we identify two brightly polarized filaments southeast of the LMC, associated with neutral hydrogen arms. The filaments' magnetic field potentially aligns with the direction toward the Small Magellanic Cloud (SMC). We suggest that tidal interactions between the SMC and the LMC in the past 10{sup 9} years are likely to have shaped the magnetic field in these filaments.

  20. The Magellanic Inter-Cloud Project (MAGIC) II: Slicing up the Bridge

    E-Print Network [OSTI]

    Noel, Noelia E D; Read, Justin I; Dolphin, Andrew; Rix, Hans-Walter

    2015-01-01

    The origin of the gas in between the Magellanic Clouds (MCs), known as the Magellanic Bridge (MB), has always been the subject of controversy. To shed light into this, we present the results from the MAGIC II project aimed at probing the stellar populations in ten large fields located perpendicular to the main ridge-line of HI in the Inter-Cloud region. We secured these observations of the stellar populations in between the MCs using the WFI camera on the 2.2 m telescope in La Silla. Using colour-magnitude diagrams (CMDs), we trace stellar populations across the Inter-Cloud region. In good agreement with MAGIC I, we find significant intermediate-age stars in the Inter-Cloud region as well as young stars of a similar age to the last pericentre passage in between the MCs (~200 Myr ago). We show here that the young, intermediate-age and old stars have distinct spatial distributions. The young stars correlate well with the HI gas suggesting that they were either recently stripped from the SMC or formed in-situ. T...

  1. Spitzer View of Massive Star Formation in the Tidally Stripped Magellanic Bridge

    E-Print Network [OSTI]

    Chen, C -H Rosie; Muller, Erik; Kawamura, Akiko; Gordon, Karl D; Sewi?o, Marta; Whitney, Barbara A; Fukui, Yasuo; Madden, Suzanne C; Meade, Marilyn R; Meixner, Margaret; Oliveira, Joana M; Robitaille, Thomas P; Seale, Jonathan P; Shiao, Bernie; van Loon, Jacco Th

    2014-01-01

    The Magellanic Bridge is the nearest low-metallicity, tidally stripped environment, offering a unique high-resolution view of physical conditions in merging and forming galaxies. In this paper we present analysis of candidate massive young stellar objects (YSOs), i.e., {\\it in situ, current} massive star formation (MSF) in the Bridge using {\\it Spitzer} mid-IR and complementary optical and near-IR photometry. While we definitely find YSOs in the Bridge, the most massive are $\\sim10 M_\\odot$, $\\ll45 M_\\odot$ found in the Large Magellanic Cloud (LMC). The intensity of MSF in the Bridge also appears decreasing, as the most massive YSOs are less massive than those formed in the past. To investigate environmental effects on MSF, we have compared properties of massive YSOs in the Bridge to those in the LMC. First, YSOs in the Bridge are apparently less embedded than in the LMC: 81% of Bridge YSOs show optical counterparts, compared to only 56% of LMC sources with the same range of mass, circumstellar dust mass, and...

  2. Two evolved supernova remnants with newly identified Fe-rich cores in the Large Magellanic Cloud

    E-Print Network [OSTI]

    Kavanagh, Patrick J; Bozzetto, Luke M; Points, Sean D; Crawford, Evan J; Dickel, John; Filipovic, Miroslav D; Haberl, Frank; Maggi, Pierre; Whelan, Emma T

    2015-01-01

    Aims. We present a multi-wavelength analysis of the evolved supernova remnants MCSNR J0506-7025 and MCSNR J0527-7104 in the Large Magellanic Cloud. Methods. We used data from XMM-Newton, the Australian Telescope Compact Array, and the Magellanic Cloud Emission Line Survey to study their broadband emission and used Spitzer and HI data to gain a picture of their environments. We performed a multi-wavelength morphological study and detailed radio and X-ray spectral analyses to determine their physical characteristics. Results. Both remnants were found to have bright X-ray cores, dominated by Fe L-shell emission, consistent with reverse shock heated ejecta with determined Fe masses in agreement with Type Ia explosion yields. A soft X-ray shell, consistent with swept-up interstellar medium, was observed in MCSNR J0506-7025, suggestive of a remnant in the Sedov phase. Using the spectral fit results and the Sedov self-similar solution, we estimated the age of MCSNR J0506-7025 to be ~16-28 kyr, with an initial explos...

  3. CHEMICAL SIGNATURE OF A MAJOR MERGER IN THE EARLY FORMATION OF THE SMALL MAGELLANIC CLOUD

    SciTech Connect (OSTI)

    Tsujimoto, Takuji [National Astronomical Observatory, Mitaka-shi, Tokyo 181-8588 (Japan); Bekki, Kenji [School of Physics, University of New South Wales, Sydney 2052, NSW (Australia)], E-mail: taku.tsujimoto@nao.ac.jp

    2009-08-01

    The formation history of the Small Magellanic Cloud (SMC) is unraveled based on the results of our new chemical evolution models constructed for the SMC, highlighting the observed anomaly in the age-metallicity relation for star clusters in the SMC. We first propose that evidence of a major merger is imprinted in the age-metallicity relation as a dip in [Fe/H]. Our models predict that the major merger with a mass ratio of 1:1 to 1:4 occurred at {approx}7.5 Gyr ago, with a good reproduction of the abundance distribution function of field stars in the SMC. Furthermore, our models predict a relatively large scatter in [Mg/Fe] for -1.4 {<=} [Fe/H] {<=} -1.1 as a reflection of a looping feature resulting from the temporally inverse progress of chemical enrichment, which can be tested against future observational results. Given that the observed velocity dispersion ({approx}30 km s{sup -1}) of the SMC is much smaller than that ({approx}160 km s{sup -1}) of the Galactic halo, our finding strongly implies that the predicted merger event happened in a small group environment that was far from the Galaxy and contained a number of small gas-rich dwarfs comparable to the SMC. This theoretical view is extensively discussed in the framework that considers a connection with the formation history of the Large Magellanic Cloud.

  4. Multibeam Maser Survey of methanol and excited OH in the Magellanic Clouds: new detections and maser abundance estimates

    E-Print Network [OSTI]

    J. A. Green; J. L. Caswell; G. A. Fuller; S. L. Breen; K. Brooks; M. G. Burton; A. Chrysostomou; J. Cox; P. J. Diamond; S. P. Ellingsen; M. D. Gray; M. G. Hoare; M. R. W. Masheder; N. McClure-Griffiths; M. Pestalozzi; C. Phillips; L. Quinn; M. A. Thompson; M. Voronkov; A. Walsh; D. Ward-Thompson; D. Wong-McSweeney; J. A. Yates; R. J. Cohen

    2008-01-02

    We present the results of the first complete survey of the Large and Small Magellanic Clouds for 6668-MHz methanol and 6035-MHz excited-state hydroxyl masers. In addition to the survey, higher-sensitivity targeted searches towards known star-formation regions were conducted. The observations yielded the discovery of a fourth 6668-MHz methanol maser in the Large Magellanic Cloud (LMC), found towards the star-forming region N160a, and a second 6035-MHz excited-state hydroxyl maser, found towards N157a. We have also re-observed the three previously known 6668-MHz methanol masers and the single 6035-MHz hydroxyl maser. We failed to detect emission from either transition in the Small Magellanic Cloud. All observations were initially made using the Methanol Multibeam (MMB) survey receiver on the 64-m Parkes telescope as part of the MMB project and accurate positions have been measured with the Australia Telescope Compact Array (ATCA). We compare the maser populations in the Magellanic Clouds with those of our Galaxy and discuss their implications for the relative rates of massive star-formation, heavy metal abundance, and the abundance of complex molecules. The LMC maser populations are demonstrated to be smaller than their Milky Way counterparts. Methanol masers are under-abundant by a factor of ~45, whilst hydroxyl and water masers are a factor of ~10 less abundant than our Galaxy.

  5. 1. Annee 2001-02 1.1. Exposes dans des congr`es, des colloquiums ou des seminaires

    E-Print Network [OSTI]

    Colmez, Pierre

    1. Ann´ee 2001-02 1.1. Expos´es dans des congr`es, des colloquiums ou des s´eminaires Cambridge (octobre 2001, "Koweit lecture" et s´eminaire), Chevaleret (octobre 2001, STN) S´eoul (octobre 2001, mini-cours 6h), Tokyo (novembre 2001, s´eminaire), Bourbaki (novembre 2001), Rennes (novembre 2001, s

  6. Partager : des technologies de pointe au service de la société

    ScienceCinema (OSTI)

    None

    2011-10-06

    Médecine, climatologie, métrologie et informatique, les techniques utilisées par le LHC trouvent déjà des répercussions dans d?autres domaines scientifiques. Utilisant des techniques inédites, la physique des particules en fait bénéficier la société toute entière.

  7. PROPER-MOTION STUDY OF THE MAGELLANIC CLOUDS USING SPM MATERIAL

    SciTech Connect (OSTI)

    Vieira, Katherine; Girard, Terrence M.; Van Altena, William F.; Casetti-Dinescu, Dana I.; Korchagin, Vladimir I.; Herrera, David, E-mail: kvieira@cida.v, E-mail: terry.girard@yale.ed, E-mail: william.vanaltena@yale.ed [Astronomy Department, Yale University, P.O. Box 208101, New Haven, CT 06520 (United States)

    2010-12-15

    Absolute proper motions are determined for stars and galaxies to V = 17.5 over a 450 deg{sup 2} area that encloses both Magellanic Clouds. The proper motions are based on photographic and CCD observations of the Yale/San Juan Southern Proper Motion program, which span a baseline of 40 years. Multiple, local relative proper-motion measures are combined in an overlap solution using photometrically selected Galactic disk stars to define a global relative system that is then transformed to absolute using external galaxies and Hipparcos stars to tie into the ICRS. The resulting catalog of 1.4 million objects is used to derive the mean absolute proper motions of the Large Magellanic Cloud (LMC) and the Small Magellanic Cloud (SMC); ({mu}{sub {alpha}}cos {delta}, {mu}{sub {delta}}){sub LMC} = (1.89, + 0.39) {+-} (0.27, 0.27) masyr{sup -1} and ({mu}{sub {alpha}}cos {delta}, {mu}{sub {delta}}){sub SMC} = (0.98, - 1.01) {+-} (0.30, 0.29) masyr{sup -1}. These mean motions are based on best-measured samples of 3822 LMC stars and 964 SMC stars. A dominant portion (0.25 mas yr{sup -1}) of the formal errors is due to the estimated uncertainty in the inertial system of the Hipparcos Catalog stars used to anchor the bright end of our proper motion measures. A more precise determination can be made for the proper motion of the SMC relative to the LMC; ({mu}{sub {alpha}cos {delta}}, {mu}{sub {delta}}){sub SMC-LMC} = (-0.91, - 1.49) {+-} (0.16, 0.15) masyr{sup -1}. This differential value is combined with measurements of the proper motion of the LMC taken from the literature to produce new absolute proper-motion determinations for the SMC, as well as an estimate of the total velocity difference of the two clouds to within {+-}54 km s{sup -1}. The absolute proper-motion results are consistent with the Clouds' orbits being marginally bound to the Milky Way, albeit on an elongated orbit. The inferred relative velocity between the Clouds places them near their binding energy limit and, thus, no definitive conclusion can be made as to whether or not the Clouds are bound to one another.

  8. DISCOVERY AND ANALYSIS OF 21 {mu}m FEATURE SOURCES IN THE MAGELLANIC CLOUDS

    SciTech Connect (OSTI)

    Volk, Kevin; Meixner, Margaret; Gordon, Karl D. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Hrivnak, Bruce J. [Department of Physics and Astronomy, Valparaiso University, Valparaiso, IN 46383 (United States); Matsuura, Mikako [Department of Physics and Astronomy, UCL-Institute of Origins, University College London, Gower Street, London WC1E 6BT (United Kingdom); Bernard-Salas, Jeronimo [Institut d Astrophysique Spatiale, CNRS/Universite Paris-Sud 11, 91405, Orsay (France); Szczerba, Ryszard [N. Copernicus Astronomical Center, Rabianska 8, 87-100 Torun (Poland); Sloan, G. C. [Department of Astronomy, Cornell University, Ithaca, NY 14853 (United States); Kraemer, Kathleen E. [Air Force Research Laboratory, AFRL/RVBYB, 29 Randolph Road, Hanscom AFB, MA 01731 (United States); Van Loon, Jacco Th. [Astrophysics Group, Lennard-Jones Laboratories, Keele University, Staffordshire ST5 5BG (United Kingdom); Kemper, F.; Woods, Paul M.; Zijlstra, Albert A. [Jodrell Bank Centre for Astrophysics, Alan Turing Building, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL (United Kingdom); Sahai, Raghvendra [Jet Propulsion Laboratory, MS 183-900, California Institute of Technology, Pasadena, CA 91109 (United States); Gruendl, Robert A. [Astronomy Department, University of Illinois, 1002 West Green Street, Urbana, IL 61801 (United States); Tielens, Alexander G. G. M. [Leiden Observatory, P.O. Box 9513, NL-2300 RA Leiden (Netherlands); Indebetouw, Remy [Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22903 (United States); Marengo, Massimo, E-mail: volk@stsci.edu [Department of Physics and Astronomy, Iowa State University, A313E Zaffarano, Ames, IA 50011 (United States)

    2011-07-10

    Spitzer Space Telescope mid-infrared spectroscopy has been obtained for 15 carbon-rich protoplanetary nebulae (PPNe) in the Large Magellanic Cloud (LMC) and for two other such stars in the Small Magellanic Cloud (SMC). Of these 17 PPNe, the unidentified 21 {mu}m feature is strong in 7 spectra, weak in 2 spectra, and very weak or questionable in 4 spectra. Two of the four spectra without the 21 {mu}m feature have a very strong feature near 11 {mu}m, similar to a feature observed in some carbon-rich planetary nebulae (PNe) in the LMC. We attribute this feature to unusual SiC dust, although the feature-to-continuum ratio is much larger than for SiC features in Galactic or Magellanic Cloud carbon star spectra. The remaining two objects show typical carbon-rich PPNe spectra with no 21 {mu}m features. One of the LMC objects that lacks the 21 {mu}m feature and one SMC object with a questionable 21 {mu}m detection may have mixed dust chemistries based upon their spectral similarity to Galactic [WC] PNe. The 13 objects that either definitely or may show the 21 {mu}m feature have distinct dust shell properties compared to the Galactic 21 {mu}m objects-the 21 {mu}m features are weaker, the estimated dust temperatures are significantly higher, the unidentified infrared (UIR) bands are stronger, and the UIRs show more structure. Four of the 21 {mu}m objects appear to show normal SiC emission features in their spectra. Many of the PPNe show strong 30 {mu}m features, although this feature carries less of the total mid-infrared emission than is normally the case for the Galactic 21 {mu}m PPNe. The LMC objects are in the LMC halo rather than in the LMC bar. The estimated luminosities of these PPNe vary from 4700 to 12,500 L{sub sun}.

  9. Diffraction de Fresnel des electrons diffuss lastiquement et inlastiquement par des crans semi-transparents

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1353 Diffraction de Fresnel des electrons diffusés élastiquement et inélastiquement par des écrans 1980) Résumé. 2014 L'application du principe de Huygens-Fresnel à l'étude de la diffraction par le bord légèrement divergent rend compte de l'allure générale des franges de Fresnel observées en microscopie

  10. Fossil imprint of a powerful flare at the galactic center along the Magellanic stream

    SciTech Connect (OSTI)

    Bland-Hawthorn, J. [Sydney Institute for Astronomy, School of Physics A28, University of Sydney, NSW 2006 (Australia); Maloney, Philip R. [CASA, University of Colorado, Boulder, CO 80309-0389 (United States); Sutherland, Ralph S. [Mount Stromlo Observatory, Australia National University, Woden, ACT 2611 (Australia); Madsen, G. J. [Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA (United Kingdom)

    2013-11-20

    The Fermi satellite discovery of the gamma-ray emitting bubbles extending 50° (10 kpc) from the Galactic center has revitalized earlier claims that our Galaxy has undergone an explosive episode in the recent past. We now explore a new constraint on such activity. The Magellanic Stream is a clumpy gaseous structure free of stars trailing behind the Magellanic Clouds, passing over the south Galactic pole (SGP) at a distance of at least 50-100 kpc from the Galactic center. Several groups have detected faint H? emission along the Magellanic Stream (1.1 ± 0.3 × 10{sup –18} erg cm{sup –2} s{sup –1} arcsec{sup –2}) which is a factor of five too bright to have been produced by the Galactic stellar population. The brightest emission is confined to a cone with half angle ?{sub 1/2} ? 25° roughly centered on the SGP. Time-dependent models of Stream clouds exposed to a flare in ionizing photon flux show that the ionized gas must recombine and cool for a time interval T{sub o} = 0.6 – 2.9 Myr for the emitted H? surface brightness to drop to the observed level. A nuclear starburst is ruled out by the low star formation rates across the inner Galaxy, and the non-existence of starburst ionization cones in external galaxies extending more than a few kiloparsecs. Sgr A{sup *} is a more likely candidate because it is two orders of magnitude more efficient at converting gas to UV radiation. The central black hole (M {sub •} ? 4 × 10{sup 6} M {sub ?}) can supply the required ionizing luminosity with a fraction of the Eddington accretion rate (f{sub E} ? 0.03-0.3, depending on uncertain factors, e.g., Stream distance) typical of Seyfert galaxies. In support of nuclear activity, the H? emission along the Stream has a polar angle dependence peaking close to the SGP. Moreover, it is now generally accepted that the Stream over the SGP must be farther than the Magellanic Clouds. At the lower halo gas densities, shocks become too ineffective and are unlikely to give rise to a polar angle dependence in the H? emission. Thus it is plausible that the Stream H? emission arose from a 'Seyfert flare' that was active 1-3 Myr ago, consistent with the cosmic ray lifetime in the Fermi bubbles. Sgr A{sup *} activity today is greatly suppressed (70-80 dB) relative to the Seyfert outburst. The rapid change over a huge dynamic range in ionizing luminosity argues for a compact UV source with an extremely efficient (presumably magneto-hydrodynamic) 'drip line' onto the accretion disk.

  11. The Origin of Large-scale HI structures in the Magellanic Bridge

    E-Print Network [OSTI]

    E. Muller; K. Bekki

    2007-06-27

    We investigate the formation of a number of key large-scale HI features in the ISM of the Magellanic Bridge using dissipationless numerical simulation techniques. This study comprises the first direct comparison between detailed HI maps of the Bridge and numerical simulations. We confirm that the SMC forms two tidal filaments: a near arm, which forms the connection between the SMC and LMC, and a counterarm. We show that the HI of the most dense part of the Bridge can become arranged into a bimodal configuration, and that the formation of a "loop" of HI, located off the North-Eastern edge of the SMC can be reproduced simply as a projection of the counter-arm, and without invoking localised energy-deposition processes such as SNe or stellar winds.

  12. Optical Spectra of Radio Planetary Nebulae in the Small Magellanic Cloud

    E-Print Network [OSTI]

    J. L. Payne; M. D. Filipovi?; E. J. Crawford; A. Y. De Horta; G. L. White; F. H. Stootman

    2008-04-29

    We present preliminary results from spectral observations of four candidate radio sources co-identified with known planetary nebulae (PNe) in the Small Magellanic Cloud (SMC). These were made using the Radcliffe 1.9-meter telescope in Sutherland, South Africa. These radio PNe were originally found in Australia Telescope Compact Array (ATCA) surveys of the SMC at 1.42 and 2.37 GHz, and were further confirmed by new high resolution ATCA images at 6 and 3 cm (4"/2"). Optical PNe and radio candidates are within 2" and may represent a subpopulation of selected radio bright objects. Nebular ionized masses of these objects may be 2.6 MSol or greater, supporting the existence of PNe progenitor central stars with masses up to 8 MSol.

  13. Discovery of a Possible Anomalous X-ray Pulsar in the Small Magellanic Cloud

    E-Print Network [OSTI]

    R. C. Lamb; D. W. Fox; D. J. Macomb; T. A. Prince

    2002-06-18

    We report the serendipitous detection of a previously unreported pulsar from the direction of the Small Magellanic Cloud using data from the CHANDRA X-Ray Observatory. Because of the luminosity of about 1.5x10^35 ergs/s, its near lack of variability for more than 20 years, and its soft spectrum we propose that it is an anomalous X-ray pulsar (AXP). Data from the ROSAT PSPC in conjunction with the CHANDRA data give a period, P, of 5.44 s and a spin down time, Pdot/P, of 11 ky. If this is a correct identification it will be the first extragalactic AXP and the fastest yet discovered.

  14. ORIGIN OF THE UNUSUALLY LOW NITROGEN ABUNDANCES IN YOUNG POPULATIONS OF THE LARGE MAGELLANIC CLOUD

    SciTech Connect (OSTI)

    Bekki, Kenji [ICRAR, M468, University of Western Australia, 35 Stirling Highway, Crawley Western Australia 6009 (Australia); Tsujimoto, Takuji [National Astronomical Observatory, Mitaka-shi, Tokyo 181-8588 (Japan)

    2010-10-01

    It is a longstanding problem that H II regions and very young stellar populations in the Large Magellanic Cloud (LMC) have nitrogen abundances ([N/H]) that are a factor of {approx}7 lower than the solar value. We here discuss a new scenario in which the observed unusually low nitrogen abundances can be closely associated with recent collisions and subsequent accretion of H I high velocity clouds (HVCs) that surround the Galaxy and have low nitrogen abundances. We show that if the observed low [N/H] is limited to very young stars with ages less than {approx}10{sup 7} yr, then the collision/accretion rate of the HVCs onto the LMC needs to be {approx}0.2 M{sub sun} yr{sup -1} (corresponding to the total HVC mass of 10{sup 6}-10{sup 7} M{sub sun}) to dilute the original interstellar medium (ISM) before star formation. The required accretion rate means that even if the typical mass of HVCs accreted onto the LMC is {approx}10{sup 7} M{sub sun}, the Galaxy needs to have {approx}2500 massive HVCs within the LMC's orbital radius with respect to the Galactic center. The rather large number of required massive HVCs drives us to suggest that the HVCs are not likely to efficiently dilute the ISM of the LMC and consequently lower the [N/H]. We thus suggest the transfer of gas with low [N/H] from the Small Magellanic Cloud to the LMC as a promising scenario that can explain the observed low [N/H].

  15. Service des finances Le saviez-vous ?

    E-Print Network [OSTI]

    peut pas être certifiée ISO 26 000. Cependant, il existe diverses certifications propres à certains des certification ISO 14 001 atteste qu'une organisation a identifié ses impacts sur l'environnement, les quantifie. La certification ISO 9001 atteste qu'une organisation a développé des pratiques de gestion qui

  16. Effets des polluants sur la sant humaine

    E-Print Network [OSTI]

    Dintrans, Boris

    , polluants allergéniques) sont considérés comme des indicateurs de pollution de l'air nuisibles pour la santé. Les principaux polluants et leurs effet sur la santé L'air que nous respirons peut contenir des. Ils font donc l'objet d'une réglementation. Il faut distinguer les épisodes pollution intenses et de

  17. UNIVERSITE MONS-HAINAUT FACULTE DES SCIENCES

    E-Print Network [OSTI]

    Rasmont, Pierre

    printanières psammophiles, ont été qualifiées d'oligolectiques strictes sur Salix (Salicaceae). Cependant, des les femelles d'Andrena vaga collectent du pollen uniquement sur Salix, il semblerait que les femelles'aspect descriptif des profils stéroliques de ces deux espèces. Mots-clés: Andrena vaga, Colletes cunicularius, Salix

  18. Hydra II: a faint and compact Milky Way dwarf galaxy found in the Survey of the Magellanic Stellar History

    E-Print Network [OSTI]

    Martin, Nicolas F; Besla, Gurtina; Olsen, Knut; Walker, Alistair R; Vivas, A Katherina; Gruendl, Robert A; Muñoz, Ricardo R; Blum, Robert D; Saha, Abhijit; Conn, Blair C; Bell, Eric F; Chu, You-Hua; Cioni, Maria-Rosa L; de Boer, Thomas J L; Gallart, Carme; Jin, Shoko; Kunder, Andrea; Majewski, Steven R; Martinez-Delgado, David; Monachesi, Antonela; Monelli, Matteo; Monteagudo, Lara; Noël, Noelia E D; Olszewski, Edward W; Stringfellow, Guy S; van der Marel, Roeland P; Zaritsky, Denis

    2015-01-01

    We present the discovery of a new dwarf galaxy, Hydra II, found serendipitously within the data from the ongoing Survey of the MAgellanic Stellar History (SMASH) conducted with the Dark Energy Camera on the Blanco 4m Telescope. The new satellite is compact (r_h = 68 +/- 11 pc) and faint (M_V = -4.8 +/- 0.3), but well within the realm of dwarf galaxies. The stellar distribution of HydraII in the color-magnitude diagram is well-described by a metal-poor ([Fe/H] = -2.2) and old (13 Gyr) isochrone and shows a distinct blue horizontal branch, some possible red clump stars, and faint stars that are suggestive of blue stragglers. At a heliocentric distance of 134 +/- 10 kpc, Hydra II is located in a region of the Galactic halo that models have suggested may host material from the leading arm of the Magellanic Stream. A comparison with N-body simulations hints that the new dwarf galaxy could be or could have been a satellite of the Magellanic Clouds.

  19. Am 5. November 2009 erhielt der Vorsitzende des Aufsichts-

    E-Print Network [OSTI]

    Nejdl, Wolfgang

    2001 der Vorsitzende des Aufsichtsrates der Volkswagen AG, Dr. Ferdinand Piëch. Der Niedersächsische

  20. Bio-optische Modellierung des pelagischen Okosystems nordlich der Kanarischen

    E-Print Network [OSTI]

    Oldenburg, Carl von Ossietzky Universität

    des Unterwas- serlichtfeldes erm¨oglichen hier eine schnelle Erhebung hochaufl¨osender Informationen

  1. Implantation des Espaces de Travail I. Introduction.............................................................. 82

    E-Print Network [OSTI]

    Donsez, Didier

    Chapitre 5 Implantation des Espaces de Travail I. Introduction Persistantes.....................................88 IV. Structure MultiThreadée des Espaces de Travail.... 105 : Implantation des Espaces de Travail - 82 - I. Introduction L'implantation des Espaces de Travail est basée sur

  2. Etude des possibilits d'utilisation agronomique des composts d'ordures mnagres en milieu tropical (1)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Etude des possibilités d'utilisation agronomique des composts d'ordures ménagères en milieu'avère nécessaire uniquement en saison sèche pour obtenir un compost dont le rapport C/N se situe autour de Ordures les composts des paysompos age. industrialisés. La proportion équilibrée des oligo-éléments et la

  3. Actes des Journes des Jeunes Chercheurs en Systmes Mmoire Logiquement Partage, Toulouse, Septembre 1993. Des Espaces de Travail Distribus

    E-Print Network [OSTI]

    Donsez, Didier

    , Septembre 1993. WEA, Des Espaces de Travail Distribués à Objets Persistants Didier Donsez, Philippe Homond, Des Espaces de Travail Distribués à Objets Persistants 2 Le système WEA utilise ce deux techniques'architecture client-serveur. Ce modèle est fondé sur un graphe d'espaces de travail dont chacun peut être

  4. Poussires dans le Sytme solaire Nicole Meyer-Vernet

    E-Print Network [OSTI]

    Aulanier, Guillaume

    gros astéroides) moins anciennes radioactivité interne planète e fusion e séparation noyau (métal déserts froids Antarctique Pôle Sud - Préservé des contaminations terrestres - Basse température déserts froids Permet de collecter des poussières fragiles CSNSM/CNRS Composition similaire à celle des

  5. A test for asymptotic giant branch evolution theories: Planetary Nebulae in the Large Magellanic Cloud

    E-Print Network [OSTI]

    Ventura, P; Dell'Agli, F; García-Hernández, D A; Di Criscienzo, M

    2015-01-01

    We used a new generation of asymptotic giant branch (AGB) stellar models that include dust formation in the stellar winds to find the links between evolutionary models and the observed properties of a homogeneous sample of Large Magellanic Cloud (LMC) planetary nebulae (PNe). Comparison between the evolutionary yields of elements such as CNO and the corresponding observed chemical abundances is a powerful tool to shed light on evolutionary processes such as hot bottom burning (HBB) and third dredge-up (TDU). We found that the occurrence of HBB is needed to interpret the nitrogen-enriched (log(N/H)+12>8) PNe. In particular, N-rich PNe with the lowest carbon content are nicely reproduced by AGB models of mass M >=6 Mo, whose surface chemistry reflects the pure effects of HBB. PNe with log(N/H)+12<7.5 correspond to ejecta of stars that have not experienced HBB, with initial mass below about 3 Mo. Some of these stars show very large carbon abundances, owing to the many TDU episodes experienced. We found from o...

  6. A deep view of the Large Magellanic Cloud with 6 years of Fermi-LAT observations

    E-Print Network [OSTI]

    ,

    2015-01-01

    The nearby Large Magellanic Cloud (LMC) provides a rare opportunity for a spatially resolved view of an external star-forming galaxy in gamma-rays. At 0.1-100GeV energies, it was detected as an extended source with CGRO/EGRET and using early observations with the Fermi-LAT. The emission was found to correlate with massive star-forming regions and to be particularly bright towards 30 Doradus. Studies of the origin and transport of cosmic rays (CRs) in the Milky Way are frequently hampered by line-of-sight confusion and poor distance determination. The LMC offers a complementary way to address these questions, by revealing if and how the gamma-ray emission is connected to specific objects, populations of objects, and structures in the galaxy. We revisit the gamma-ray emission from the LMC using about 73 months of Fermi-LAT P7REP data in the 0.2-100GeV range. A complete spatial and spectral model of the LMC emission is developed. Several approaches are tested: a simple geometrical description, template-fitting, ...

  7. B,V Photometry of Variable Stars in the Northeast Arm of the Small Magellanic Cloud

    E-Print Network [OSTI]

    Brian Sharpee; Michele Stark; Barton Pritzl; Horace Smith; Nancy Silbermann; Ronald Wilhelm; Alistair Walker

    2002-02-22

    B and V photometry has been obtained for variable stars in the northeast arm of the Small Magellanic Cloud (SMC). Periods and lightcurves have been determined for 237 periodic variables, including 201 Cepheids, 68 of which are newly discovered. Fundamental mode Cepheids and first overtone mode Cepheids are generally well separated in the B,V color-magnitude diagram, with the latter having bluer mean colors than the former. The Cepheid period-color relationship for this outlying SMC field is indistinguishable from that seen in more centrally located SMC fields, and is bluer than theoretical predictions. The red edge to the populated portion of the instability strip shifts to bluer colors for fainter Cepheids. There is support from our sample for a previously reported steepening in the slope of the period-luminosity relation for fundamental mode Cepheids near a period of 2 days. The Cepheids of the northeast arm may be closer to us than are those of the main body of the SMC, but the difference is smaller than or equal to about 4 kpc, comparable to the tidal radius of the SMC.

  8. The Mass Distribution and Assembly of the Milky Way from the Properties of the Magellanic Clouds

    SciTech Connect (OSTI)

    Busha, Michael T.; Marshall, Philip J.; Wechsler, Risa H.; Klypin, Anatoly; Primack, Joel; /UC, Santa Cruz, Phys. Dept.

    2012-02-29

    We present a new measurement of the mass of the Milky Way (MW) based on observed properties of its largest satellite galaxies, the Magellanic Clouds (MCs), and an assumed prior of a {Lambda}CDM universe. The large, high-resolution Bolshoi cosmological simulation of this universe provides a means to statistically sample the dynamical properties of bright satellite galaxies in a large population of dark matter halos. The observed properties of the MCs, including their circular velocity, distance from the center of the MW, and velocity within the MW halo, are used to evaluate the likelihood that a given halo would have each or all of these properties; the posterior probability distribution function (PDF) for any property of the MW system can thus be constructed. This method provides a constraint on the MW virial mass, 1.2{sup +0.7} - {sub 0.4}(stat.){sup +0.3} - {sub 0.3}(sys.) x 10{sup 12} M {circle_dot} (68% confidence), which is consistent with recent determinations that involve very different assumptions. In addition, we calculate the posterior PDF for the density profile of the MW and its satellite accretion history. Although typical satellites of 10{sup 12} M {circle_dot} halos are accreted over a wide range of epochs over the last 10 Gyr, we find a {approx}72% probability that the MCs were accreted within the last Gyr, and a 50% probability that they were accreted together.

  9. Spatial and Spectral Modeling of the Gamma-ray Distribution in the Large Magellanic Cloud

    E-Print Network [OSTI]

    Foreman, Gary; Gruendl, Robert; Hughes, Annie; Fields, Brian; Ricker, Paul

    2015-01-01

    We perform spatial and spectral analyses of the Large Magellanic Cloud (LMC) gamma-ray emission collected over 66 months by the Fermi Gamma-ray Space Telescope. In our spatial analysis, we model the LMC cosmic-ray distribution and gamma-ray production using observed maps of the LMC interstellar medium, star formation history, interstellar radiation field, and synchrotron emission. We use bootstrapping of the data to quantify the robustness of spatial model performance. We model the LMC gamma-ray spectrum using fitting functions derived from the physics of $\\pi^0$ decay, bremsstrahlung, and inverse Compton scattering. We find the integrated gamma-ray flux of the LMC from 200 MeV to 20 GeV to be $1.38 \\pm 0.02 \\times 10^{-7}$ ph cm$^{-2}$ s$^{-1}$, of which we attribute about 10% to inverse Compton scattering and 40% to bremsstrahlung. From our work, we conclude that the spectral index of the LMC cosmic-ray proton population is 2.4$\\pm$0.2, and we find that cosmic-ray energy loss through gamma-ray production is...

  10. SUPERGIANT SHELLS AND MOLECULAR CLOUD FORMATION IN THE LARGE MAGELLANIC CLOUD

    SciTech Connect (OSTI)

    Dawson, J. R.; Dickey, John M.; McClure-Griffiths, N. M.; Wong, T.; Hughes, A.; Fukui, Y.; Kawamura, A.

    2013-01-20

    We investigate the influence of large-scale stellar feedback on the formation of molecular clouds in the Large Magellanic Cloud (LMC). Examining the relationship between H I and {sup 12}CO(J = 1-0) in supergiant shells (SGSs), we find that the molecular fraction in the total volume occupied by SGSs is not enhanced with respect to the rest of the LMC disk. However, the majority of objects ({approx}70% by mass) are more molecular than their local surroundings, implying that the presence of a supergiant shell does on average have a positive effect on the molecular gas fraction. Averaged over the full SGS sample, our results suggest that {approx}12%-25% of the molecular mass in supergiant shell systems was formed as a direct result of the stellar feedback that created the shells. This corresponds to {approx}4%-11% of the total molecular mass of the galaxy. These figures are an approximate lower limit to the total contribution of stellar feedback to molecular cloud formation in the LMC, and constitute one of the first quantitative measurements of feedback-triggered molecular cloud formation in a galactic system.

  11. On the magnetic fields of Be/X-ray pulsars in the Small Magellanic Cloud

    E-Print Network [OSTI]

    Ikhsanov, N R

    2015-01-01

    We explore the possibility to explain the properties of the Be/X-ray pulsars observed in the Small Magellanic Cloud within the magnetic levitation accretion scenario. This implies that their X-ray emission is powered by a wind-fed accretion onto a neutron star (NS) which captures matter from a magnetized stellar wind. The NS in this case is accreting matter from a non-keplerian magnetically levitating disc (ML-disc) which is surrounding its magnetosphere. This allows us to explain the observed periods of the pulsars in terms of spin equilibrium without the need of invoking dipole magnetic fields outside the usual range ~ 10^11- 10^13 G inferred from cyclotron features of Galactic high mass X-ray binaries. We find that the equilibrium period of a NS, under certain conditions, depends strongly on the magnetization of the stellar wind of its massive companion and, correspondingly, on the magnetic field of the massive companion itself. This may help to explain why similar NSs in binaries with similar properties r...

  12. Exploring the Origin and Fate of the Magellanic Stream with Ultraviolet and Optical Absorption

    E-Print Network [OSTI]

    Fox, Andrew J; Smoker, Jonathan V; Richter, Philipp; Savage, Blair D; Sembach, Kenneth R

    2010-01-01

    (Abridged) We present an analysis of ionization and metal enrichment in the Magellanic Stream (MS), the nearest gaseous tidal stream, using HST/STIS and FUSE ultraviolet spectroscopy of two background AGN, NGC 7469 and Mrk 335. For NGC 7469, we include optical spectroscopy from VLT/UVES. In both sightlines the MS is detected in low-ion and high-ion absorption. Toward NGC 7469, we measure a MS oxygen abundance [O/H]_MS=[OI/HI]=-1.00+/-0.05(stat)+/-0.08(syst), supporting the view that the Stream originates in the SMC rather than the LMC. We use CLOUDY to model the low-ion phase of the Stream as a photoionized plasma using the observed Si III/Si II and C III/C II ratios. Toward Mrk 335 this yields an ionization parameter log U between -3.45 and -3.15 and a gas density log (n_H/cm^-3) between -2.51 and -2.21. Toward NGC 7469 we derive sub-solar abundance ratios for [Si/O], [Fe/O], and [Al/O], indicating the presence of dust in the MS. The high-ion column densities are too large to be explained by photoionization,...

  13. Origin of the unusually low nitrogen abundances in young populations of the Large Magellanic Cloud

    E-Print Network [OSTI]

    Bekki, Kenji

    2010-01-01

    It is a longstanding problem that HII regions and very young stellar populations in the Large Magellanic Cloud (LMC) have the nitrogen abundances ([N/H]) by a factor of ~7 lower than the solar value. We here discuss a new scenario in which the observed unusually low nitrogen abundances can be closely associated with recent collision and subsequent accretion of HI high velocity clouds (HVCs) that surround the Galaxy and have low nitrogen abundances. We show that if the observed low [N/H] is limited to very young stars with ages less than ~10^7 yr, then the collision/accretion rate of the HVCs onto the LMC needs to be ~ 0.2 M_sun/yr (corresponding to the total HVC mass of 10^6-10^7 M_sun) to dilute the original interstellar medium (ISM) before star formation. The required accretion rate means that even if the typical mass of HVCs accreted onto the LMC is ~ 10^7 M_sun, the Galaxy needs to have ~2500 massive HVCs within the LMC's orbital radius with respect to the Galactic center. The required rather large number...

  14. Chemical Signature of a Major Merger in the Early Formation of Small Magellanic Cloud

    E-Print Network [OSTI]

    Tsujimoto, Takuji

    2009-01-01

    The formation history of the Small Magellanic cloud (SMC) is unraveled based on the results of our new chemical evolution models constructed for the SMC, highlighting the observed anomaly in the age-metallicity relation for star clusters in the SMC. We first propose that evidence of a major merger is imprinted in the age-metallicity relation as a dip in [Fe/H]. Our models predict that the major merger with a mass ratio of 1:1 to 1:4 occurred at ~7.5 Gyr ago, with a good reproduction of the abundance distribution function of field stars in the SMC. Furthermore, our models predict a relatively large scatter in [Mg/Fe] for -1.4 < [Fe/H] <-1.1 as a reflection of a looping feature resulting from the temporally inverse progress of chemical enrichment, which can be tested against future observational results. Given that the observed velocity dispersion (~30 km/s) of the SMC is much smaller than that (~160 km/s) of the Galactic halo, our finding strongly implies that the predicted merger event happened in a sma...

  15. Gestion des ressources humaines Dveloppement organisationnel

    E-Print Network [OSTI]

    Spino, Claude

    international Finances Analyse financière Préparation et évaluation d'appels d'offres Développement de systèmes organisation! DES EXEMPLES DE CE QUE NOS STAGIAIRES PEUVENT FAIRE POUR VOUS Management / Gestion Planification financiers Dossier de financement Recherche en fiscalité

  16. Informationsveranstaltung zur Reform des gymnasialen Lehramtes

    E-Print Network [OSTI]

    Informationsveranstaltung zur Reform des gymnasialen Lehramtes W¨urzburg, 3. Mai 2013 ... was lange montags 16-17 Uhr und freitags 10-11 Uhr Euch und allen an der Reform Beteiligten ein herzliches Danke

  17. A SPITZER SPACE TELESCOPE FAR-INFRARED SPECTRAL ATLAS OF COMPACT SOURCES IN THE MAGELLANIC CLOUDS. I. THE LARGE MAGELLANIC CLOUD

    SciTech Connect (OSTI)

    Van Loon, Jacco Th.; Oliveira, Joana M. [Astrophysics Group, Lennard-Jones Laboratories, Keele University, Staffordshire ST5 5BG (United Kingdom); Gordon, Karl D.; Meixner, Margaret; Shiao, Bernie; Boyer, Martha L. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Kemper, F.; Woods, Paul M. [Jodrell Bank Centre for Astrophysics, Alan Turing Building, School of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester M13 9PL (United Kingdom); Tielens, A. G. G. M. [Leiden Observatory, P.O. Box 9513, NL-2300 RA Leiden (Netherlands); Marengo, Massimo [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Indebetouw, Remy; Chen, C.-H. Rosie [Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904 (United States); Sloan, G. C. [Department of Astronomy, Cornell University, Ithaca, NY 14853 (United States)], E-mail: jacco@astro.keele.ac.uk

    2010-01-15

    We present far-infrared spectra, {lambda} = 52-93 {mu}m, obtained with the Spitzer Space Telescope in the spectral energy distribution mode of its MIPS instrument, of a representative sample of the most luminous compact far-infrared sources in the Large Magellanic Cloud (LMC). These include carbon stars, OH/IR asymptotic giant branch (AGB) stars, post-AGB objects and planetary nebulae, the R CrB-type star HV 2671, the OH/IR red supergiants (RSGs) WOH G064 and IRAS 05280 - 6910, the three B[e] stars IRAS 04530 - 6916, R 66 and R 126, the Wolf-Rayet star Brey 3a, the luminous blue variable (LBV) R 71, the supernova remnant N 49, a large number of young stellar objects (YSOs), compact H II regions and molecular cores, and a background galaxy at a redshift z {approx_equal} 0.175. We use the spectra to constrain the presence and temperature of cold dust and the excitation conditions and shocks within the neutral and ionized gas, in the circumstellar environments and interfaces with the surrounding interstellar medium (ISM). First, we introduce a spectral classification scheme. Then, we measure line strengths, dust temperatures, and IR luminosities. Objects associated with star formation are readily distinguished from evolved stars by their cold dust and/or fine-structure lines. Evolved stars, including the LBV R 71, lack cold dust except in some cases where we argue that this is swept-up ISM. This leads to an estimate of the duration of the prolific dust-producing phase ('superwind') of several thousand years for both RSGs and massive AGB stars, with a similar fractional mass loss experienced despite the different masses. We tentatively detect line emission from neutral oxygen in the extreme RSG WOH G064, which suggests a large dust-free cavity with implications for wind driving. In N 49, the shock between the supernova ejecta and ISM is revealed in spectacular fashion by its strong [O I] {lambda}63 {mu}m emission and possibly water vapor; we estimate that 0.2 M {sub sun} of ISM dust was swept up. On the other hand, some of the compact H II regions display pronounced [O III] {lambda}88 {mu}m emission. The efficiency of photoelectric heating in the interfaces of ionized gas and molecular clouds is estimated at 0.1%-0.3%. We confirm earlier indications of a low nitrogen content in the LMC. Evidence for solid state emission features is found in both young and evolved objects, but the carriers of these features remain elusive; some of the YSOs are found to contain crystalline water ice. The spectra constitute a valuable resource for the planning and interpretation of observations with the Herschel Space Observatory and the Stratospheric Observatory For Infrared Astronomy.

  18. Michel Grossetti Centre d'tude des rationalits et des savoirs (Cers)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Michel Grossetti Centre d'étude des rationalités et des savoirs (Cers) Université de Toulouse. The scientific histories of the two towns are very similar since the creation of electrical institutes industrial firms with R&D activities are concentrated in the Paris area and in provincial towns. Except

  19. ESPACE, TEMPS ET COGNITION A PARTIR DES MATHEMATIQUES ET DES SCIENCES DE LA NATURE

    E-Print Network [OSTI]

    Longo, Giuseppe

    1 ESPACE, TEMPS ET COGNITION A PARTIR DES MATHEMATIQUES ET DES SCIENCES DE LA NATURE Francis BAILLY et Giuseppe LONGO RESUME : La cognition humaine paraît étroitement liée à la structure de l'espace et pertinence pour la cognition elle-même. MOTS-CLES : espace, temps, cognition, théories scientifiques

  20. Conifer regeneration in stand-replacement portions of a large mixed-severity wildfire in the

    E-Print Network [OSTI]

    Turner, Monica G.

    ` texture grossie`re supportaient des densite´s moins e´leve´es (133 semisÁha­1) que les sols a` texture

  1. THE COS-HALOS SURVEY: KECK LRIS AND MAGELLAN MagE OPTICAL SPECTROSCOPY

    SciTech Connect (OSTI)

    Werk, Jessica K.; Prochaska, J. Xavier [UCO/Lick Observatory, University of California, Santa Cruz, CA (United States); Thom, Christopher; Tumlinson, Jason [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD (United States); Tripp, Todd M.; Meiring, Joseph D. [Department of Astronomy, University of Massachusetts, Amherst, MA (United States); O'Meara, John M., E-mail: jwerk@ucolick.org [Department of Chemistry and Physics, Saint Michael's College, Colchester, VT (United States)

    2012-01-01

    We present high signal-to-noise optical spectra for 67 low-redshift (0.1 < z < 0.4) galaxies that lie within close projected distances (5 kpc < {rho} < 150 kpc) of 38 background UV-bright QSOs. The Keck LRIS and Magellan MagE data presented here are part of a survey that aims to construct a statistically sampled map of the physical state and metallicity of gaseous galaxy halos using the Cosmic Origins Spectrograph (COS) on the Hubble Space Telescope. We provide a detailed description of the optical data reduction and subsequent spectral analysis that allow us to derive the physical properties of this uniquely data-rich sample of galaxies. The galaxy sample is divided into 38 pre-selected L {approx} L*, z {approx} 0.2 'target' galaxies and 29 'bonus' galaxies that lie in close proximity to the QSO sightlines. We report galaxy spectroscopic redshifts accurate to {+-}30 km s{sup -1}, impact parameters, rest-frame colors, stellar masses, total star formation rates (SFRs), and gas-phase interstellar medium oxygen abundances. When we compare the distribution of these galaxy characteristics to those of the general low-redshift population, we find good agreement. The L {approx} L* galaxies in this sample span a diverse range of color (1.0 < u - r < 3.0), stellar mass (10{sup 9.5} < M/M{sub Sun} < 10{sup 11.5}), and SFRs (0.01-20 M{sub Sun} yr{sup -1}). These optical data, along with the COS UV spectroscopy, comprise the backbone of our efforts to understand how halo gas properties may correlate with their host galaxy properties, and ultimately to uncover the processes that drive gas outflow and/or are influenced by gas inflow.

  2. ICE CHEMISTRY IN EMBEDDED YOUNG STELLAR OBJECTS IN THE LARGE MAGELLANIC CLOUD

    SciTech Connect (OSTI)

    Oliveira, J. M.; Van Loon, J. Th. [School of Physical and Geographical Sciences, Lennard-Jones Laboratories, Keele University, Staffordshire ST5 5BG (United Kingdom); Chen, C.-H. R.; Indebetouw, R. [Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904 (United States); Tielens, A. G. G. M. [Leiden Observatory, P.O. Box 9513, NL-2300 RA Leiden (Netherlands); Sloan, G. C. [Department of Astronomy, Cornell University, Ithaca, NY 14853 (United States); Woods, P. M.; Kemper, F. [Jodrell Bank Centre for Astrophysics, Alan Turing Building, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL (United Kingdom); Gordon, K. D.; Boyer, M. L.; Shiao, B.; Meixner, M. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Madden, S. [Service d'Astrophysique, Commissariat a L'Energie Atomique de Saclay, 91191 Gif-sur-Yvette (France); Speck, A. K. [Physics and Astronomy, University of Missouri, Columbia, MO 65211 (United States); Marengo, M. [Department of Physics and Astronomy, Iowa State University, Ames, IA 50010 (United States)

    2009-12-20

    We present spectroscopic observations of a sample of 15 embedded young stellar objects (YSOs) in the Large Magellanic Cloud (LMC). These observations were obtained with the Spitzer Infrared Spectrograph (IRS) as part of the SAGE-Spec Legacy program. We analyze the two prominent ice bands in the IRS spectral range: the bending mode of CO{sub 2} ice at 15.2 mum and the ice band between 5 and 7 mum that includes contributions from the bending mode of water ice at 6 mum among other ice species. The 5-7 mum band is difficult to identify in our LMC sample due to the conspicuous presence of polycyclic aromatic hydrocarbon emission superimposed onto the ice spectra. We identify water ice in the spectra of two sources; the spectrum of one of those sources also exhibits the 6.8 mum ice feature attributed in the literature to ammonium and methanol. We model the CO{sub 2} band in detail, using the combination of laboratory ice profiles available in the literature. We find that a significant fraction (approx>50%) of CO{sub 2} ice is locked in a water-rich component, consistent with what is observed for Galactic sources. The majority of the sources in the LMC also require a pure-CO{sub 2} contribution to the ice profile, evidence of thermal processing. There is a suggestion that CO{sub 2} production might be enhanced in the LMC, but the size of the available sample precludes firmer conclusions. We place our results in the context of the star formation environment in the LMC.

  3. Dense molecular clumps associated with the Large Magellanic Cloud supergiant shells LMC 4 and LMC 5

    SciTech Connect (OSTI)

    Fujii, Kosuke; Mizuno, Norikazu [Department of Astronomy, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 133-0033 (Japan); Minamidani, Tetsuhiro [Nobeyama Radio Observatory, 462-2 Nobeyama Minamimaki-mura, Minamisaku-gun, Nagano 384-1305 (Japan); Onishi, Toshikazu; Muraoka, Kazuyuki [Department of Physical Science, Osaka Prefecture University, Gakuen 1-1, Sakai, Osaka 599-8531 (Japan); Kawamura, Akiko; Muller, Erik; Tatematsu, Ken'ichi; Hasegawa, Tetsuo; Miura, Rie E.; Ezawa, Hajime [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Dawson, Joanne [Australia Telescope National Facility, CSIRO Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710 (Australia); Tosaki, Tomoka [Joetsu University of Education, Yamayashiki-machi, Joetsu, Niigata 943-8512 (Japan); Sakai, Takeshi [Graduate School of Informatics and Engineering, The University of Electro-Communications, Chofu, Tokyo 182-8585 (Japan); Tsukagoshi, Takashi [College of Science, Ibaraki University, Bunkyo 2-1-1, Mito 310-8512 (Japan); Tanaka, Kunihiko [Department of Physics, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama, Kanagawa 223-8522 (Japan); Fukui, Yasuo, E-mail: kosuke.fujii@nao.ac.jp [Department of Astrophysics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602 (Japan)

    2014-12-01

    We investigate the effects of supergiant shells (SGSs) and their interaction on dense molecular clumps by observing the Large Magellanic Cloud (LMC) star-forming regions N48 and N49, which are located between two SGSs, LMC 4 and LMC 5. {sup 12}CO (J = 3-2, 1-0) and {sup 13}CO(J = 1-0) observations with the ASTE and Mopra telescopes have been carried out toward these regions. A clumpy distribution of dense molecular clumps is revealed with 7 pc spatial resolution. Large velocity gradient analysis shows that the molecular hydrogen densities (n(H{sub 2})) of the clumps are distributed from low to high density (10{sup 3}-10{sup 5} cm{sup –3}) and their kinetic temperatures (T {sub kin}) are typically high (greater than 50 K). These clumps seem to be in the early stages of star formation, as also indicated from the distribution of H?, young stellar object candidates, and IR emission. We found that the N48 region is located in the high column density H I envelope at the interface of the two SGSs and the star formation is relatively evolved, whereas the N49 region is associated with LMC 5 alone and the star formation is quiet. The clumps in the N48 region typically show high n(H{sub 2}) and T {sub kin}, which are as dense and warm as the clumps in LMC massive cluster-forming areas (30 Dor, N159). These results suggest that the large-scale structure of the SGSs, especially the interaction of two SGSs, works efficiently on the formation of dense molecular clumps and stars.

  4. AKARI IRC survey of the Large Magellanic Cloud: Outline of the survey and initial results

    E-Print Network [OSTI]

    Yoshifusa Ita; Takashi Onaka; Daisuke Kato; Toshihiko Tanabe; Itsuki Sakon; Hidehiro Kaneda; Akiko Kawamura; Takashi Shimonishi; Takehiko Wada; Fumihiko Usui; Bon-Chul Koo; Mikako Matsuura; Hidenori Takahashi; Yoshikazu Nakada; Tetsuo Hasegawa; Motohide Tamura

    2008-08-22

    We observed an area of 10 deg^2 of the Large Magellanic Cloud using the Infrared Camera on board AKARI. The observations were carried out using five imaging filters (3, 7, 11, 15, and 24 micron) and a dispersion prism (2 -- 5 micron, $\\lambda / \\Delta\\lambda$ $\\sim$ 20) equipped in the IRC. This paper describes the outline of our survey project and presents some initial results using the imaging data that detected over 5.9x10^5 near-infrared and 6.4x10^4 mid-infrared point sources. The 10 $\\sigma$ detection limits of our survey are about 16.5, 14.0, 12.3, 10.8, and 9.2 in Vega-magnitude at 3, 7, 11, 15, and 24 micron, respectively. The 11 and 15 micron data, which are unique to AKARI IRC, allow us to construct color-magnitude diagrams that are useful to identify stars with circumstellar dust. We found a new sequence in the color-magnitude diagram, which is attributed to red giants with luminosity fainter than that of the tip of the first red giant branch. We suggest that this sequence is likely to be related to the broad emission feature of aluminium oxide at 11.5 micron. The 11 and 15 micron data also indicate that the ([11] - [15]) micron color of both oxygen-rich and carbon-rich red giants once becomes blue and then turns red again in the course of their evolution, probably due to the change in the flux ratio of the silicate or silicon carbide emission feature at 10 or 11.3 micron to the 15 micron flux.

  5. Supernova Remnants in the AKARI IRC Survey of the Large Magellanic Cloud

    E-Print Network [OSTI]

    Ji Yeon Seok; Bon-Chul Koo; Takashi Onaka; Yoshifusa Ita; Ho-Gyu Lee; Jae-Joon Lee; Dae-Sik Moon; Itsuki Sakon; Hidehiro Kaneda; Hyung Mok Lee; Myung Gyoon Lee; Sung Eun Kim

    2008-11-10

    We present the near- to mid-infared study of supernova remnants (SNRs) using the AKARI IRC Survey of the Large Magellanic Cloud (LMC). The LMC survey observed about a 10 square degree area of the LMC in five bands centered at 3, 7, 11, 15, and 24 \\micron using the Infrared Camera (IRC) aboard AKARI. The number of SNRs in the survey area is 21, which is about a half of the known LMC SNRs. We systematically examined the AKARI images and identified eight SNRs with distinguishable infrared emission. All of them were detected at $\\gtrsim 10$ \\micron and some at 3 and 7 \\micron, too. We present their AKARI images and fluxes. In the 11/15 \\micron versus 15/24 \\micron color-color diagram, the SNRs appear to be aligned along a modified blackbody curve, representing thermal emission from dust at temperatures between 90 and 190 K. There is a good correlation between the 24 \\micron and X-ray fluxes of the SNRs. It was also found that there is a good correlation between the 24 \\micron and radio fluxes even if there is no direct physical connection between them. We considered the origin of the detected mid-infrared emission in individual SNRs. We conclude that the mid-infrared emissions in five SNRs that show morphologies similar to the X-rays are dominated by thermal emission from hot dust heated by X-ray emitting plasma. Their 15/24 \\micron color temperatures are generally higher than the Spitzer 24/70 \\micron color temperatures, which suggests that a single-temperature dust model cannot describe the full spectral energy distribution (SED) of the SNRs. It also implies that our understanding of the full SED is essential for estimating the dust destruction rate of grains by SNR shocks.

  6. Clustering of local group distances: publication bias or correlated measurements? I. The large Magellanic cloud

    SciTech Connect (OSTI)

    De Grijs, Richard [Kavli Institute for Astronomy and Astrophysics, Peking University, Yi He Yuan Lu 5, Hai Dian District, Beijing 100871 (China); Wicker, James E. [National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012 (China); Bono, Giuseppe [Dipartimento di Fisica, Università di Roma Tor Vergata, via Della Ricerca Scientifica 1, I-00133 Roma (Italy)

    2014-05-01

    The distance to the Large Magellanic Cloud (LMC) represents a key local rung of the extragalactic distance ladder yet the galaxy's distance modulus has long been an issue of contention, in particular in view of claims that most newly determined distance moduli cluster tightly—and with a small spread—around the 'canonical' distance modulus, (m – M){sub 0} = 18.50 mag. We compiled 233 separate LMC distance determinations published between 1990 and 2013. Our analysis of the individual distance moduli, as well as of their two-year means and standard deviations resulting from this largest data set of LMC distance moduli available to date, focuses specifically on Cepheid and RR Lyrae variable-star tracer populations, as well as on distance estimates based on features in the observational Hertzsprung-Russell diagram. We conclude that strong publication bias is unlikely to have been the main driver of the majority of published LMC distance moduli. However, for a given distance tracer, the body of publications leading to the tightly clustered distances is based on highly non-independent tracer samples and analysis methods, hence leading to significant correlations among the LMC distances reported in subsequent articles. Based on a careful, weighted combination, in a statistical sense, of the main stellar population tracers, we recommend that a slightly adjusted canonical distance modulus of (m – M){sub 0} = 18.49 ± 0.09 mag be used for all practical purposes that require a general distance scale without the need for accuracies of better than a few percent.

  7. DISCOVERY OF X-RAY EMISSION FROM YOUNG SUNS IN THE SMALL MAGELLANIC CLOUD

    SciTech Connect (OSTI)

    Oskinova, L. M.; Hainich, R. [Institute for Physics and Astronomy, University Potsdam, D-14476 Potsdam (Germany)] [Institute for Physics and Astronomy, University Potsdam, D-14476 Potsdam (Germany); Sun, W.; Chen, Y. [Department of Astronomy, Nanjing University, Nanjing, 210093 Jiangsu (China)] [Department of Astronomy, Nanjing University, Nanjing, 210093 Jiangsu (China); Evans, C. J. [UK Astronomy Technology Centre, Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ (United Kingdom)] [UK Astronomy Technology Centre, Royal Observatory Edinburgh, Blackford Hill, Edinburgh EH9 3HJ (United Kingdom); Henault-Brunet, V. [Scottish Universities Physics Alliance (SUPA), Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ (United Kingdom)] [Scottish Universities Physics Alliance (SUPA), Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ (United Kingdom); Chu, Y.-H.; Gruendl, R. A. [Department of Astronomy, University of Illinois, 1002 West Green Street, Urbana, IL 61801 (United States)] [Department of Astronomy, University of Illinois, 1002 West Green Street, Urbana, IL 61801 (United States); Gallagher, J. S. III [Department of Astronomy, University of Wisconsin-Madison, 5534 Sterling, 475 North Charter Street, Madison, WI 53706 (United States)] [Department of Astronomy, University of Wisconsin-Madison, 5534 Sterling, 475 North Charter Street, Madison, WI 53706 (United States); Guerrero, M. A. [Instituto de Astrofisica de Andalucia, IAA-CSIC, Glorieta de la Astronomia s/n, E-18008 Granada (Spain)] [Instituto de Astrofisica de Andalucia, IAA-CSIC, Glorieta de la Astronomia s/n, E-18008 Granada (Spain); Guedel, M. [Department of Astrophysics, University of Vienna, Tuerkenschanzstrasse 17, A-1180 Vienna (Austria)] [Department of Astrophysics, University of Vienna, Tuerkenschanzstrasse 17, A-1180 Vienna (Austria); Silich, S. [Instituto Nacional de Astrofisica Optica y Electronica, AP 51, 72000 Puebla (Mexico)] [Instituto Nacional de Astrofisica Optica y Electronica, AP 51, 72000 Puebla (Mexico); Naze, Y. [GAPHE, Departement AGO, Universite de Liege, Allee du 6 Aout 17, Bat. B5C, B-4000 Liege (Belgium)] [GAPHE, Departement AGO, Universite de Liege, Allee du 6 Aout 17, Bat. B5C, B-4000 Liege (Belgium); Reyes-Iturbide, J. [LATO-DCET/Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, km 16, 45662-000 Ilheus, BA (Brazil)] [LATO-DCET/Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, km 16, 45662-000 Ilheus, BA (Brazil)

    2013-03-01

    We report the discovery of extended X-ray emission within the young star cluster NGC 602a in the Wing of the Small Magellanic Cloud (SMC) based on observations obtained with the Chandra X-Ray Observatory. X-ray emission is detected from the cluster core area with the highest stellar density and from a dusty ridge surrounding the H II region. We use a census of massive stars in the cluster to demonstrate that a cluster wind or wind-blown bubble is unlikely to provide a significant contribution to the X-ray emission detected from the central area of the cluster. We therefore suggest that X-ray emission at the cluster core originates from an ensemble of low- and solar-mass pre-main-sequence (PMS) stars, each of which would be too weak in X-rays to be detected individually. We attribute the X-ray emission from the dusty ridge to the embedded tight cluster of the newborn stars known in this area from infrared studies. Assuming that the levels of X-ray activity in young stars in the low-metallicity environment of NGC 602a are comparable to their Galactic counterparts, then the detected spatial distribution, spectral properties, and level of X-ray emission are largely consistent with those expected from low- and solar-mass PMS stars and young stellar objects (YSOs). This is the first discovery of X-ray emission attributable to PMS stars and YSOs in the SMC, which suggests that the accretion and dynamo processes in young, low-mass objects in the SMC resemble those in the Galaxy.

  8. www.cnrs.fr Des virus mergents aux virus pandmiques

    E-Print Network [OSTI]

    van Tiggelen, Bart

    2014 www.cnrs.fr Des virus émergents aux virus pandémiques: interaction entre écologie des hôtes et évolution virale From emerging to pandemic viruses: interplay between host ecology and viral evolution

  9. Diplme Inter Universitaire TUDE et PRISE en CHARGE des

    E-Print Network [OSTI]

    Brest, Université de

    services de Médecine et de Psychiatrie, amenés à participer à la prise en charge des suicidants (infirmiers

  10. Diplme d'Universit VALUATION ET TRAITEMENT DES DOULEURS

    E-Print Network [OSTI]

    Brest, Université de

    Module : Evaluation et Prise en charge des douleurs Douleur chez l'enfant Douleurs et soins infirmiers

  11. LE DEVENIR DES DIPLMS DE LICENCE PROFESSIONNELLE 2011

    E-Print Network [OSTI]

    Jeanjean, Louis

    durant plusieurs semaines afin de contac- ter les diplômés n'ayant pas répondu. Au final, 72,8 % des

  12. Des Plaines Landfill Biomass Facility | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (UtilityInstruments IncMississippi:DeltaFish LakeDepew, NewMoines,

  13. Des Plaines, Illinois: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (UtilityInstruments IncMississippi:DeltaFish LakeDepew, NewMoines,

  14. Des Plaines, Illinois: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (UtilityInstruments IncMississippi:DeltaFish LakeDepew, NewMoines,(Redirected

  15. Proposition de sujet de Thse de Doctorat Caractrisation multi chelle des proprits hydro-go-physiques des

    E-Print Network [OSTI]

    Naud Frédéric

    Proposition de sujet de Thèse de Doctorat Caractérisation multi échelle des propriétés hydro structurales et ainsi développer des méthodologies d'acquisition hydro-géo-physique en ce milieu complexe

  16. RECHERCHE DES NITRATES DANS LES FOURRAGES ET LES ENSILAGES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    'une purification des extraits puis de la réduction des nitrates en nitrites par le cadmium. Les nitrites sontH sur la réduction par le cadmium de solutions pures de nitrates de concentrations variables. La méthode réduction par le cadmium des nitrates en nitrites lesquels sont dosés par colorimétrie (de BoRGER et JENNEN

  17. BU Education -ESPE Franche-Comt Des services

    E-Print Network [OSTI]

    Jeanjean, Louis

    BU Education - ESPE Franche-Comté Des services L'équipe des personnels de la BU Education se tient informatiques en libre accès 1 poste informatique réservé à la consultation du catalogue de la BU Education équipe à votre écoute "Les rendez-vous de la BU Education" Prenez rendez-vous auprès des personnels de la

  18. PLC IMPLEMENTATION OF A DES SUPERVISOR FOR A MANUFACTURING

    E-Print Network [OSTI]

    Leduc, Ryan

    PLC IMPLEMENTATION OF A DES SUPERVISOR FOR A MANUFACTURING TESTBED: AN IMPLEMENTATION PERSPECTIVE Copyright by Ryan James Leduc 1996 #12;Title: PLC Implementation of A DES Supervisor for a Manufacturing, and issues involved in implementing DES supervisors on programmable logic controllers (PLC). A PLC based

  19. The Relationship Between Molecular Gas, HI, and Star Formation in the Low-Mass, Low-Metallicity Magellanic Clouds

    E-Print Network [OSTI]

    Jameson, Katherine E; Leroy, Adam K; Meixner, Margaret; Roman-Duval, Julia; Gordon, Karl; Hughes, Annie; Israel, Frank P; Rubio, Monica; Indebetouw, Remy; Madden, Suzanne C; Bot, Caroline; Hony, Sacha; Cormier, Diane; Pellegrini, Eric W; Galametz, Maud; Sonneborn, George

    2015-01-01

    The Magellanic Clouds provide the only laboratory to study the effect of metallicity and galaxy mass on molecular gas and star formation at high (~20 pc) resolution. We use the dust emission from HERITAGE Herschel data to map the molecular gas in the Magellanic Clouds, avoiding the known biases of CO emission as a tracer of H2. Using our dust-based molecular gas estimates, we find molecular gas depletion times of ~0.4 Gyr in the LMC and ~0.6 SMC at 1 kpc scales. These depletion times fall within the range found for normal disk galaxies, but are shorter than the average value, which could be due to recent bursts in star formation. We find no evidence for a strong intrinsic dependence of the molecular gas depletion time on metallicity. We study the relationship between gas and star formation rate across a range in size scales from 20 pc to ~1 kpc, including how the scatter in molecular gas depletion time changes with size scale, and discuss the physical mechanisms driving the relationships. We compare the metal...

  20. Multi-frequency study of the newly confirmed supernova remnant MCSNR J0512-6707 in the Large Magellanic Cloud

    E-Print Network [OSTI]

    Kavanagh, P J; Bozzetto, L M; Points, S D; Filipovic, M D; Maggi, P; Haberl, F; Crawford, E J

    2015-01-01

    We present a study of the supernova remnant MCSNR J0512-6707 in the Large Magellanic Cloud. We used new data from XMM-Newton to characterise the X-ray emission and data from the Australian Telescope Compact Array, the Magellanic Cloud Emission Line Survey, and Spitzer to gain a picture of the environment into which the remnant is expanding. We performed a morphological study, determined radio polarisation and magnetic field orientation, and performed an X-ray spectral analysis. We estimated the its size to be 24.9 (\\pm1.5) x 21.9 (\\pm1.5) pc, with the major axis rotated ~29 deg east of north. Radio polarisation at 3 cm and 6 cm indicate a higher degree of polarisation in the NW and SE tangentially oriented to the SNR shock front, indicative of an SNR compressing the magnetic field threading the interstellar medium. The X-ray spectrum is unusual as it requires a soft (~0.2 keV) CIE thermal plasma of interstellar medium abundance, in addition to a harder component. Using our results and the Sedov dynamical mode...

  1. Faculte des Sciences et Techniques (FAST), Bamako, Mali 24 Novembre 2010 Ecole de recherche CIMPA Theorie des Nombres et Algorithmique

    E-Print Network [OSTI]

    Waldschmidt, Michel

    Facult´e des Sciences et Techniques (FAST), Bamako, Mali 24 Novembre 2010 ´Ecole de recherche CIMPA

  2. SD 1313–0019: ANOTHER SECOND-GENERATION STAR WITH [Fe/H] = ?5.0, OBSERVED WITH THE MAGELLAN TELESCOPE

    E-Print Network [OSTI]

    Chiti, Anirudh

    We present a Magellan/MIKE high-resolution (R ~ 35,000) spectrum of the ancient star SD 1313?0019, which has an iron abundance of [Fe/H] = -5.0, paired with a carbon enhancement of [C/Fe] ~ 3.0. The star was initially ...

  3. Phenomene couple thermo-hydro-mecanique des roches fracturees: Recents developpements des methodes de modelisation et tests de validation

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    95-54 Phenomene couple thermo-hydro-mecanique des roches fracturees: Recents developpements des methodes de modelisation et tests de validation Coupled thermo-hydro-mechanical phenomena in fractured fracture.La deuxiemequestion concemela modelisation des phenomenes couples thenno-hydro-mecaniques. L

  4. The GBT-SerDes ASIC prototype

    E-Print Network [OSTI]

    Moreira, P; Marchioro, A; Paillard, C; Li, J; Bonacini, S; Faccio, F; Porret, D; Baron, S; Gui, P; Francisco, R; Cobanoglu, O; Feger, S

    2010-01-01

    In the framework of the GigaBit Transceiver project (GBT), a prototype, the GBTSerDes ASIC, was developed, fabricated and tested. To sustain high radiation doses while operating at 4.8Gb/s, the ASIC was fabricated in a commercial 130 nm CMOS technology employing radiation tolerant techniques and circuits. The transceiver serializes-deserializes the data, Reed-Solomon encodes and decodes the data and scrambles and descrambles the data for transmission over optical fibre links. This paper describes the GBT-SerDes architecture, and presents the test results.

  5. Thorie des Distributions Transforme de Fourier

    E-Print Network [OSTI]

    Rioul, Olivier

    Théorie des Distributions Transformée de Fourier Convolution Cours abrégé Olivier RIOUL TELECOM : dualité de Schwartz . . . . . . . . . . . . . . . . . . 41 4 Transformée de Fourier 47 4.1 Transformée de Fourier d'une fonction intégrable . . . . . . . . . 47 4.2 Transformée de Fourier d'une fonction tempérée

  6. Index des auteurs ABELES Marc, 38

    E-Print Network [OSTI]

    van Tiggelen, Bart

    Index des auteurs 1 ABELES Marc, 38 ACHARD Pierre, 36 AGUER Pierre, 3 ALART Pierre, 9 ALBAREDE Francis, 13 ALBRECHT Michèle, 4 ALBRECHT Pierre, 20 ALLEGRET André, 13 ALLET Christian, 12 ALLIES Paul, 40 ALLINQUANT Bernadette, 25 ALVINERIE André-Paul, 22 AMATORE Christian, 17 AMBROISE-THOMAS Pierre, 22 AMBROISE

  7. The DES-Model and Its Applications

    E-Print Network [OSTI]

    : This report describes the use of the Danish Energy System (DES) Model, which has been used for several years as the most comprehensive model for the energy planning. The struc- ture of the Danish energy system is described, and a number of energy system parameters are explained, in particular the ef- ficiencies

  8. Service des finances Le saviez-vous ?

    E-Print Network [OSTI]

    respectant les normes ISO 14 024. De plus, ces certifications attestent que les produits certifiés ont étéService des finances Le saviez-vous ? Les certifications de produits Approvisionnement responsable Penser autrement, acheter mieux ! Les certifications officielles sont le meilleur moyen de repérer

  9. cole des Jeunes Explorateurs Granby (Quebec)

    E-Print Network [OSTI]

    École des Jeunes Explorateurs Granby (Quebec) www.ecolelesjeunesexplorateurs.com Job Title Explorateurs 210, Denison Est Granby (Quebec) J2G 8E3 Description of School L'École Les Jeunes Explorateurs and develop dynamic and stimulating lessons according to the Quebec Education Program, as well as the school

  10. JOSEPH LOUIS LAGRANGE, THORIE DES FONCTIONS ANALYTIQUES,

    E-Print Network [OSTI]

    Fraser, Craig

    popularised and extended his view that the differential and integral calculus could be based solely (1797). Parts of it were further developed in his Leçons sur le calcul des functions (1801; revised of a function of a single variable. 155 Areas and path-lengths. 161 Differential geometry of surfaces. 187

  11. Major mergers with small galaxies - the discovery of a Magellanic-type galaxy at z=0.12

    E-Print Network [OSTI]

    Koch, Andreas; Pasquali, Anna; Rich, R Michael; Rabitz, Andreas

    2015-01-01

    We report on the serendipitous discovery of a star-forming galaxy at redshift z=0.116 with morphological features that indicate an ongoing merger. This object exhibits two clearly separated components with significantly different colors, plus a possible tidal stream. Follow-up spectroscopy of the bluer component revealed a low star-forming activity of 0.09 M$_{\\odot}$/year and a high metallicity of 12+log(O/H)=8.6. Based on comparison with mass-star-formation-rate and mass-metallicity relations, and on fitting of spectral energy distributions, we obtain a stellar mass of 3x10$^9$ M$_{\\odot}$, which renders this object comparable to the Large Magellanic Cloud (LMC). Thus our finding provides a further piece of evidence of a major merger already acting on small, dwarf galaxy-like scales.

  12. CX-006016: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Energy Efficiency and Conservation Block Grant Program - Iowa-City-West Des MoinesCX(s) Applied: A1, A9, B2.5, B5.1Date: 05/27/2011Location(s): Des Moines, IowaOffice(s): Energy Efficiency and Renewable Energy

  13. CX-003913: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Iowa-City-Des MoinesCX(s) Applied: A1, A9, A11, B1.32, B5.1Date: 09/17/2010Location(s): Des Moines, IowaOffice(s): Energy Efficiency and Renewable Energy

  14. Basic category theory -Monads Gouter des doctorants

    E-Print Network [OSTI]

    Doyen, Laurent

    Basic category theory - Monads Gouter des doctorants Jérémy Dubut LSV, ENS Cachan Friday, 3rd April, 2015 Jérémy Dubut (LSV, ENS Cachan) Basic category theory - Monads Friday, 3rd April, 2015 1 / 8 #12.bind(f y, g)) Jérémy Dubut (LSV, ENS Cachan) Basic category theory - Monads Friday, 3rd April, 2015 2 / 8

  15. Basic category theory -Limits Gouter des doctorants

    E-Print Network [OSTI]

    Doyen, Laurent

    Basic category theory - Limits Gouter des doctorants Jérémy Dubut LSV, ENS Cachan Friday, 3rd April, 2015 Jérémy Dubut (LSV, ENS Cachan) Basic category theory - Limits Friday, 3rd April, 2015 1 / 8 #12 not necessarily exist Jérémy Dubut (LSV, ENS Cachan) Basic category theory - Limits Friday, 3rd April, 2015 2 / 8

  16. Diplomanden-und Doktorandenseminar des Instituts fr Informatik

    E-Print Network [OSTI]

    Zachmann, Gabriel

    einer Treasury Plattform der Volkswagen AG Jana Wackerow, TU Clausthal Zunehmend stehen Unternehmen vor differenzieren. Die Volkswagen AG hat im Bereich des Finanzwesens Optimierungspotential erkannt. Mittels einer

  17. The COS/UVES Absorption Survey of the Magellanic Stream: II. Evidence for a complex enrichment history of the Stream from the Fairall 9 sightline

    E-Print Network [OSTI]

    Richter, Philipp; Wakker, Bart P; Lehner, Nicolas; Howk, J Christopher; Bland-Hawthorn, Joss; Bekhti, Nadya Ben; Fechner, Cora

    2013-01-01

    We present a multi-wavelength study of the Magellanic Stream (MS), a massive gaseous structure in the Local Group that is believed to represent material stripped from the Magellanic Clouds. We use ultraviolet, optical and radio data obtained with HST/COS, VLT/UVES, FUSE and GASS to study metal abundances and physical conditions in the Stream toward the quasar Fairall 9. Line absorption in the MS is detected from a large number of metal ions and from molecular hydrogen. From the analysis of unsaturated SII absorption, in combination with a detailed photoionization model, we obtain a surprisingly high alpha abundance in the Stream toward Fairall 9 of [S/H]=-0.30pm0.04 (0.5 solar). This value is 5 times higher than what is found along other MS sightlines based on similar COS/UVES data sets. In contrast, the measured nitrogen abundance is found to be substantially lower ([N/H]=-1.15pm0.06), implying a very low [alpha/N] ratio of -0.85 dex. The substantial differences in the chemical composition of the Magellanic ...

  18. Geschftsordnung des Rektorats und des Erweiterten Rektorates der Universitt Stuttgart (GO Rektorat)

    E-Print Network [OSTI]

    Reyle, Uwe

    Rektorat) vom 5. März 2013 Gemäß § 16 Abs. 2 des Landeshochschulgesetzes Baden-Württemberg (LHG BW) in der Angelegenheiten der Universität, für die im Landeshochschulgesetz Baden-Württemberg (LHG) oder in der Grundordnung § 16 Abs. 3 LHG a. die Struktur- und Entwicklungsplanung einschließlich der Personalent- wicklung, b

  19. Projet: Les lois des dieux, des hommes et de la nature1 Par Giuseppe Longo

    E-Print Network [OSTI]

    Longo, Giuseppe

    dans le temps et l'espace du monde, mais aussi discuter de la diversité des liens que ces dans leur rapport aux "lois" telles que proposées par les sciences de la nature. Loi, espace, équations

  20. Reprsentations professionnelles, satisfaction au travail et choix de carrire des personnels infirmiers : le rle des

    E-Print Network [OSTI]

    Jeanjean, Louis

    infirmiers : le rôle des valeurs d'autonomie Professional representations, job satisfaction, and career inciter les infirmiers à quitter leur profession. Dans ce cadre, la satisfaction au travail apparaît comme un facteur explicatif majeur, dépendant de la place accordée au "rôle propre" infirmier. Par ailleurs

  1. Explorer : des clés pour mieux comprendre la matière

    ScienceCinema (OSTI)

    None

    2011-10-06

    Le LHC va-t-il bouleverser les théories de l'infiniment petit ? Les physiciens aimeraient que l'accélérateur fasse trembler le modèle standard. Cette théorie des particules élémentaires et des forces laisse de nombreuses zones d'ombre. Le LHC et ses expériences ont été conçus pour les éclairer.

  2. L'tude des dangers : contenu, limites, et spcificits franaises

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    L'étude des dangers : contenu, limites, et spécificités françaises Régis Farret INERIS (Institut aujourd'hui de présenter par le menu ce qu'est une étude de dangers 4, mais de prendre un peu de recul pour exposer la méthode d'analyse des risques qu'est l'étude de dangers et de montrer les

  3. Quelques proprits des fonctions globales d'automates cellulaires

    E-Print Network [OSTI]

    Koiran, Pascal

    of the Shift Dynamical System de Hedlund ([Hed69]). L'espace des con#28;gurations des automates cellulaires une métrique naturelle sur les suites bi-in#28;nies, qui fait de cet ensemble un espace compact

  4. Le Modle des Espaces de Travail I. Introduction.............................................................. 14

    E-Print Network [OSTI]

    Donsez, Didier

    Chapitre 3 Le Modèle des Espaces de Travail I. Introduction.............................................................. 14 II. Le Modèle Client-Serveur ........................................14 III. Le Modèle des Espaces de Travail.............................20 IV. Espaces de Travail et Services

  5. INTERPRTATION GOMTRIQUE DES INTGRALES DE FRESNEL ; Par M. N. OUMOFF.

    E-Print Network [OSTI]

    Boyer, Edmond

    281 INTERPRÉTATION GÉOMÉTRIQUE DES INTÉGRALES DE FRESNEL ; Par M. N. OUMOFF. I. - Pour représenter ', a pour valeur : Elle représente toujours l'intégrale A de Fresnel si l'on compte les boucles de -1 3) représente l'intégrale B de Fresnel sous des conditions analogues. Les maximum de B sont

  6. Les hpitaux sont-ils des organisations haute fiabilit ? Apports du concept de HRO la GRH des

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    réalisés auprès du personnel soignant de 4 centres hospitaliers de la région parisienne. Cet article entretien réalisé dans une seconde collecte de données. Il apparaît que le domaine hospitalier génère des la GRH " Vers un management des ressources humaines durable et bienveillant ?, Marrakech : France

  7. International Linear Collider Abbildung 61: Im Laufe des Jahres 2005 wurden die ersten Ebenen des hadronischen Ka-

    E-Print Network [OSTI]

    International Linear Collider Abbildung 61: Im Laufe des Jahres 2005 wurden die ersten Ebenen des Rande angepasst, um die Zahl der Auslesekan¨ale zu minimieren. 118 #12;International Linear Collider International Linear Collider ILC-Projektgruppe: Mitglieder und G¨aste der Gruppen M und FH, darunter

  8. A Galactic Center Origin for HE 0437-5439, the Hypervelocity Star near the Large Magellanic Cloud

    E-Print Network [OSTI]

    Brown, Warren R; Gnedin, Oleg Y; Bond, Howard E; Geller, Margaret J; Kenyon, Scott J; Livio, Mario; 10.1088/2041-8205/719/1/L23

    2010-01-01

    We use Hubble Space Telescope imaging to measure the absolute proper motion of the hypervelocity star (HVS) HE 0437-5439, a short-lived B star located in the direction of the Large Magellanic Cloud (LMC). We observe (\\mu_\\alpha, \\mu_\\delta)=(+0.53+-0.25(stat)+-0.33(sys), +0.09+-0.21(stat)+-0.48(sys)) mas/yr. The velocity vector points directly away from the center of the Milky Way; an origin from the center of the LMC is ruled out at the 3-sigma level. The flight time of the HVS from the Milky Way exceeds its main-sequence lifetime, thus its stellar nature requires it to be a blue straggler. The large space velocity rules out a Galactic-disk ejection. Combining the HVS's observed trajectory, stellar nature, and required initial velocity, we conclude that HE 0437-5439 was most likely a compact binary ejected by the Milky Way's central black hole.

  9. Optical discovery and multiwavelength investigation of supernova remnant MCSNR J0512-6707 in the Large Magellanic Cloud

    E-Print Network [OSTI]

    Reid, Warren A; Bozzetto, Luke M; Parker, Quentin A; Filipovic, Miroslav D

    2015-01-01

    We present optical, radio and X-ray data that confirm a new supernova remnant (SNR) in the Large Magellanic Cloud (LMC) discovered using our deep H-alpha imagery. Optically, the new SNR has a somewhat filamentary morphology and a diameter of 56 x 64 arcsec (13.5 x 15.5 pc at the 49.9 kpc distance of the LMC). Spectroscopic follow-up of multiple regions show high [SII]/H-alpha emission-line ratios ranging from 0.66+/-0.02 to 0.93+/-0.01, all of which are typical of an SNR. We found radio counterparts for this object using our new Australia Telescope Compact Array (ATCA) 6cm pointed observations as well as a number of available radio surveys at 8 640 MHz, 4 850 MHz, 1 377 MHz and 843 MHz. With these combined data we provide a spectral index (alpha) = -0.5 between 843 and 8640 MHz. Both spectral line analysis and the magnetic field strength, ranging from 124 - 184 mG, suggest a dynamical age between 2,200 and 4,700 yrs. The SNR has a previously catalogued X-ray counterpart listed as HP 483 in the ROSAT Position ...

  10. Optically Visible Post-AGB Stars, Post-RGB Stars and Young Stellar Objects in the Large Magellanic Cloud

    E-Print Network [OSTI]

    Kamath, Devika; Van Winckel, Hans

    2015-01-01

    We have carried out a search for optically visible post-Asymptotic Giant Branch (post-AGB) stars in the Large Magellanic Cloud (LMC). First, we selected candidates with a mid-IR excess and then obtained their optical spectra. We disentangled contaminants with unique spectra such as M-stars, C-stars, planetary nebulae, quasi-stellar objects and background galaxies. Subsequently, we performed a detailed spectroscopic analysis of the remaining candidates to estimate their stellar parameters such as effective temperature, surface gravity (log g), metallicity ([Fe/H]), reddening and their luminosities. This resulted in a sample of 35 likely post-AGB candidates with late-G to late-A spectral types, low log g, and [Fe/H] < -0.5. Furthermore, our study confirmed the existence of the dusty post-Red Giant Branch (post-RGB) stars, discovered previously in our SMC survey, by revealing 119 such objects in the LMC. These objects have mid-IR excesses and stellar parameters (Teff, log g, [Fe/H]) similar to those of post-A...

  11. Testing the nonlinearity of the BVIcJHKs period-luminosity relations for the Large Magellanic Cloud Cepheids

    E-Print Network [OSTI]

    C. Ngeow; S. Kanbur; A. Nanthakumar

    2007-10-26

    A number of recent works have suggested that the period-luminosity (PL) relation for the Large Magellanic Cloud (LMC) Cepheids exhibits a controversial nonlinear feature with a break period at 10 days. Therefore, the aim of this Research Note is to test the linearity/nonlinearity of the PL relations for the LMC Cepheids in BVIcJHKs band, as well as in the Wesenheit functions. We show that simply comparing the long and short period slopes, together with their associate d standard deviations, leads to a strictly larger error rate than applying rigorous statistical tests such as the F-test. We applied various statistical tests to the current published LMC Cepheid data. These statistical tests include the F-test, the testimator test, and the Schwarz information criterion (SIC) method. The results from these statistical tests strongly suggest that the LMC PL relation is nonlinear in BVIcJH band but linear in the Ks band and in the Wesenheit functions. Using the properties of period-color relations at maximum light and multi-phase relations, we believe that the nonlinear PL relation is not caused by extinction errors.

  12. A Study of the Populations of X-ray Sources in the Small Magellanic Cloud with ASCA

    E-Print Network [OSTI]

    Jun Yokogawa; Kensuke Imanishi; Masahiro Tsujimoto; Mamiko Nishiuchi; Katsuji Koyama; Fumiaki Nagase; Robin H. D. Corbet

    2000-02-08

    The Advanced Satellite for Cosmology and Astrophysics (ASCA) has made multiple observations of the Small Magellanic Cloud (SMC). X-ray mosaic images in the soft (0.7--2.0 keV) and hard (2.0--7.0 keV) bands are separately constructed, and the latter provides the first hard X-ray view of the SMC. We extract 39 sources from the two-band images with a criterion of S/N>5, and conduct timing and spectral analyses for all of these sources. Coherent pulsations are detected from 12 X-ray sources; five of which are new discoveries. Most of the 12 X-ray pulsars are found to exhibit long-term flux variabilities, hence they are likely to be X-ray binary pulsars (XBPs). On the other hand, we classify four supernova remnants (SNRs) as thermal SNRs, because their spectra exhibit emission lines from highly ionized atoms. We find that XBPs and thermal SNRs in the SMC can be clearly separated by their hardness ratio (the ratio of the count rate between the hard and soft bands). Using this empirical grouping, we find many XBP candidates in the SMC, although no pulsations have yet been detected from these sources. Possible implications on the star-formation history and evolution of the SMC are presented by a comparison of the source populations in the SMC and our Galaxy.

  13. Animation de mod`eles UML -Application dans le contexte des Smartgrids

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Animation de mod`eles UML - Application dans le contexte des Smartgrids Rachida Seghiri T'arriv´ee des Smartgrids dans le domaine ´electrique apporte de profonds changements au sein des Syst`emes d, nous ´etayons cet ´etat de l'art par la simulation d'un cas m´etier illustratif des Smartgrids en

  14. EXPOSE ET MISE AU POINT BIBLIOGRAPH 1 QUE PROPAGATION DES CHOCS INTERATOMIQUES DANS LES SOLIDES

    E-Print Network [OSTI]

    Boyer, Edmond

    'effet des radiations sur les solides est un probl6me extremement complexe. Le compor- tement des solides la nature de la radiation utilis6e. Un des effets des radiations est de deplacer un certain nombre d atomes au repos. Leur liaison avec la maille est simplement sch6matis6e par 1'existence d'un seuil 6nerg6

  15. DE LA VIE CULTURELLE Au-del des activits culturelles proposes par votre tablissement,

    E-Print Network [OSTI]

    Baudoin, Geneviève

    .colline.fr LA FERME DU BUISSON : est un lieu qui propose des espaces de plein air, des salles de spectacles, des Espaces culturels situés à proximité des établissements d'UPE : Ce soir, je sors! #12;37 BON � SAVOIR La

  16. L'AFFAIRE DES POISONS : ENTRE SCIENCE ET LITTRATURE, UNE RESSOURCE POUR

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    L'AFFAIRE DES POISONS : ENTRE SCIENCE ET LITTÉRATURE, UNE RESSOURCE POUR L'ENSEIGNEMENT Philippe épisode de l'« Affaire des poisons », laquelle s'est étalée sur la période 1672-1682. Un résumé des faits est consultable sur le site internet du ministère de la justice3 . « L'« Affaire des poisons » est l

  17. Systmes Relationnels et SQL Pr. Robert Laurini Chapitre 3 : Administration des BD SQL 1

    E-Print Network [OSTI]

    Laurini, Robert

    Systèmes Relationnels et SQL Pr. Robert Laurini Chapitre 3 : Administration des BD SQL 1 Chapitre III Administration des BD SQL 3 - Administration de BD SQL · 3.1 Création de BD · 3.2 Gestion des utilisateurs · 3.3 Administration des transactions · 3.4 Accès à une BD distante · 3.5 Conclusions Composants

  18. UPMC Direction des ressources humaines 4, place Jussieu 75252 Paris cedex 05

    E-Print Network [OSTI]

    'équipe département universitaire en soins infirmiers - Rédaction des procès-verbaux du Conseil Scientifique - Gestion

  19. THE COS/UVES ABSORPTION SURVEY OF THE MAGELLANIC STREAM. II. EVIDENCE FOR A COMPLEX ENRICHMENT HISTORY OF THE STREAM FROM THE FAIRALL 9 SIGHTLINE

    SciTech Connect (OSTI)

    Richter, Philipp; Fechner, Cora [Institut fuer Physik und Astronomie, Universitaet Potsdam, Haus 28, Karl-Liebknecht-Str. 24/25, D-14476 Golm (Potsdam) (Germany); Fox, Andrew J. [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Wakker, Bart P. [Department of Astronomy, University of Wisconsin-Madison, 475 North Charter Street, Madison, WI 53706 (United States); Lehner, Nicolas; Howk, J. Christopher [Department of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, IN 46556 (United States); Bland-Hawthorn, Joss [Institute of Astronomy, School of Physics, University of Sydney, NSW 2006 (Australia); Ben Bekhti, Nadya [Argelander-Institut fuer Astronomie, Universitaet Bonn, Auf dem Huegel 71, D-53121 Bonn (Germany)

    2013-08-01

    We present a multi-wavelength study of the Magellanic Stream (MS), a massive gaseous structure in the Local Group that is believed to represent material stripped from the Magellanic Clouds. We use ultraviolet, optical and radio data obtained with HST/COS, VLT/UVES, FUSE, GASS, and ATCA to study metal abundances and physical conditions in the Stream toward the quasar Fairall 9. Line absorption in the MS from a large number of metal ions and from molecular hydrogen is detected in up to seven absorption components, indicating the presence of multi-phase gas. From the analysis of unsaturated S II absorption, in combination with a detailed photoionization model, we obtain a surprisingly high {alpha} abundance in the Stream toward Fairall 9 of [S/H] = -0.30 {+-} 0.04 (0.50 solar). This value is five times higher than what is found along other MS sightlines based on similar COS/UVES data sets. In contrast, the measured nitrogen abundance is found to be substantially lower ([N/H] = -1.15 {+-} 0.06), implying a very low [N/{alpha}] ratio of -0.85 dex. The substantial differences in the chemical composition of MS toward Fairall 9 compared to other sightlines point toward a complex enrichment history of the Stream. We favor a scenario, in which the gas toward Fairall 9 was locally enriched with {alpha} elements by massive stars and then was separated from the Magellanic Clouds before the delayed nitrogen enrichment from intermediate-mass stars could set in. Our results support (but do not require) the idea that there is a metal-enriched filament in the Stream toward Fairall 9 that originates in the LMC.

  20. THE COS/UVES ABSORPTION SURVEY OF THE MAGELLANIC STREAM. I. ONE-TENTH SOLAR ABUNDANCES ALONG THE BODY OF THE STREAM

    SciTech Connect (OSTI)

    Fox, Andrew J. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Richter, Philipp [Institut fuer Physik und Astronomie, Universitaet Potsdam, Haus 28, Karl-Liebknecht-Str. 24/25, D-14476 Potsdam (Germany); Wakker, Bart P. [Department of Astronomy, University of Wisconsin-Madison, 475 North Charter St., Madison, WI 53706 (United States); Lehner, Nicolas; Howk, J. Christopher [Department of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, IN 46556 (United States); Ben Bekhti, Nadya [Argelander-Institut fuer Astronomie, Universitaet Bonn, Auf dem Huegel 71, D-53121 Bonn (Germany); Bland-Hawthorn, Joss [Institute of Astronomy, School of Physics, University of Sydney, NSW 2006 (Australia); Lucas, Stephen, E-mail: afox@stsci.edu [Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom)

    2013-08-01

    The Magellanic Stream (MS) is a massive and extended tail of multi-phase gas stripped out of the Magellanic Clouds and interacting with the Galactic halo. In this first paper of an ongoing program to study the Stream in absorption, we present a chemical abundance analysis based on HST/COS and VLT/UVES spectra of four active galactic nuclei (RBS 144, NGC 7714, PHL 2525, and HE 0056-3622) lying behind the MS. Two of these sightlines yield good MS metallicity measurements: toward RBS 144 we measure a low MS metallicity of [S/H] = [S II/H I] = -1.13 {+-} 0.16 while toward NGC 7714 we measure [O/H] = [O I/H I] = -1.24 {+-} 0.20. Taken together with the published MS metallicity toward NGC 7469, these measurements indicate a uniform abundance of Almost-Equal-To 0.1 solar along the main body of the Stream. This provides strong support to a scenario in which most of the Stream was tidally stripped from the SMC Almost-Equal-To 1.5-2.5 Gyr ago (a time at which the SMC had a metallicity of Almost-Equal-To 0.1 solar), as predicted by several N-body simulations. However, in Paper II of this series, we report a much higher metallicity (S/H = 0.5 solar) in the inner Stream toward Fairall 9, a direction sampling a filament of the MS that Nidever et al. claim can be traced kinematically to the Large Magellanic Cloud, not the Small Magellanic Cloud. This shows that the bifurcation of the Stream is evident in its metal enrichment, as well as its spatial extent and kinematics. Finally we measure a similar low metallicity [O/H] = [O I/H I] = -1.03 {+-} 0.18 in the v{sub LSR} = 150 km s{sup -1} cloud toward HE 0056-3622, which belongs to a population of anomalous velocity clouds near the south Galactic pole. This suggests these clouds are associated with the Stream or more distant structures (possibly the Sculptor Group, which lies in this direction at the same velocity), rather than tracing foreground Galactic material.

  1. THE DUST BUDGET OF THE SMALL MAGELLANIC CLOUD: ARE ASYMPTOTIC GIANT BRANCH STARS THE PRIMARY DUST SOURCE AT LOW METALLICITY?

    SciTech Connect (OSTI)

    Boyer, M. L.; Gordon, K. D.; Meixner, M.; Sargent, B. A. [STScI, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Srinivasan, S. [UPMC-CNRS UMR7095, Institut d'Astrophysique de Paris, F-75014 Paris (France); Riebel, D. [Department of Physics and Astronomy, The Johns Hopkins University, Homewood Campus, Baltimore, MD 21218 (United States); McDonald, I. [Jodrell Bank Centre for Astrophysics, Alan Turing Building, University of Manchester, Manchester M13 9PL (United Kingdom); Van Loon, J. Th. [Astrophysics Group, Lennard-Jones Laboratories, Keele University, Staffordshire ST5 5BG (United Kingdom); Clayton, G. C. [Department of Physics and Astronomy, Louisiana State University, 233-A Nicholson Hall, Tower Dr., Baton Rouge, LA 70803-4001 (United States); Sloan, G. C., E-mail: mboyer@stsci.edu [Astronomy Department, Cornell University, Ithaca, NY 14853-6801 (United States)

    2012-03-20

    We estimate the total dust input from the cool evolved stars in the Small Magellanic Cloud, using the 8 {mu}m excess emission as a proxy for the dust-production rate (DPR). We find that asymptotic giant branch (AGB) and red supergiant (RSG) stars produce (8.6-9.5) Multiplication-Sign 10{sup -7} M{sub Sun} yr{sup -1} of dust, depending on the fraction of far-infrared sources that belong to the evolved star population (with 10%-50% uncertainty in individual DPRs). RSGs contribute the least (<4%), while carbon-rich AGB stars (especially the so-called extreme AGB stars) account for 87%-89% of the total dust input from cool evolved stars. We also estimate the dust input from hot stars and supernovae (SNe), and find that if SNe produce 10{sup -3} M{sub Sun} of dust each, then the total SN dust input and AGB input are roughly equivalent. We consider several scenarios of SN dust production and destruction and find that the interstellar medium (ISM) dust can be accounted for solely by stellar sources if all SNe produce dust in the quantities seen around the dustiest examples and if most SNe explode in dense regions where much of the ISM dust is shielded from the shocks. We find that AGB stars contribute only 2.1% of the ISM dust. Without a net positive contribution from SNe to the dust budget, this suggests that dust must grow in the ISM or be formed by another unknown mechanism.

  2. From gas to stars in energetic environments: dense gas clumps in the 30 Doradus region within the Large Magellanic Cloud

    SciTech Connect (OSTI)

    Anderson, Crystal N.; Meier, David S.; Ott, Jürgen; Hughes, Annie; Wong, Tony; Looney, Leslie; Henkel, Christian; Chen, Rosie; Indebetouw, Remy; Muller, Erik; Pineda, Jorge L.; Seale, Jonathan

    2014-09-20

    We present parsec-scale interferometric maps of HCN(1-0) and HCO{sup +}(1-0) emission from dense gas in the star-forming region 30 Doradus, obtained using the Australia Telescope Compact Array. This extreme star-forming region, located in the Large Magellanic Cloud (LMC), is characterized by a very intense ultraviolet ionizing radiation field and sub-solar metallicity, both of which are expected to impact molecular cloud structure. We detect 13 bright, dense clumps within the 30 Doradus-10 giant molecular cloud. Some of the clumps are aligned along a filamentary structure with a characteristic spacing that is consistent with formation via varicose fluid instability. Our analysis shows that the filament is gravitationally unstable and collapsing to form stars. There is a good correlation between HCO{sup +} emission in the filament and signatures of recent star formation activity including H{sub 2}O masers and young stellar objects (YSOs). YSOs seem to continue along the same direction of the filament toward the massive compact star cluster R136 in the southwest. We present detailed comparisons of clump properties (masses, linewidths, and sizes) in 30Dor-10 to those in other star forming regions of the LMC (N159, N113, N105, and N44). Our analysis shows that the 30Dor-10 clumps have similar masses but wider linewidths and similar HCN/HCO{sup +} (1-0) line ratios as clumps detected in other LMC star-forming regions. Our results suggest that the dense molecular gas clumps in the interior of 30Dor-10 are well shielded against the intense ionizing field that is present in the 30 Doradus region.

  3. The close binary properties of massive stars in the Milky Way and low-metallicity Magellanic Clouds

    SciTech Connect (OSTI)

    Moe, Maxwell; Di Stefano, Rosanne, E-mail: mmoe@cfa.harvard.edu [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, MS-10, Cambridge, MA 02138 (United States)

    2013-12-01

    In order to understand the rates and properties of Type Ia and Type Ib/c supernovae, X-ray binaries, gravitational wave sources, and gamma-ray bursts as a function of galactic environment and cosmic age, it is imperative that we measure how the close binary properties of O- and B-type stars vary with metallicity. We have studied eclipsing binaries with early B main-sequence primaries in three galaxies with different metallicities: the Large and Small Magellanic Clouds (LMC and SMC, respectively) and the Milky Way (MW). The observed fractions of early B stars that exhibit deep eclipses 0.25 < ?m (mag) < 0.65 and orbital periods 2 < P (days) < 20 in the MW, LMC, and SMC span a narrow range of (0.7-1.0)%, which is a model-independent result. After correcting for geometrical selection effects and incompleteness toward low-mass companions, we find for early B stars in all three environments (1) a close binary fraction of (22 ± 5)% across orbital periods 2 < P (days) < 20 and mass ratios q = M {sub 2}/M {sub 1} > 0.1, (2) an intrinsic orbital period distribution slightly skewed toward shorter periods relative to a distribution that is uniform in log P, (3) a mass-ratio distribution weighted toward low-mass companions, and (4) a small, nearly negligible excess fraction of twins with q > 0.9. Our fitted parameters derived for the MW eclipsing binaries match the properties inferred from nearby, early-type spectroscopic binaries, which further validates our results. There are no statistically significant trends with metallicity, demonstrating that the close binary properties of massive stars do not vary across metallicities –0.7 < log(Z/Z {sub ?}) < 0.0 beyond the measured uncertainties.

  4. A deep Chandra observation of oxygen-rich supernova remnant B0049-73.6 in the Small Magellanic Cloud

    SciTech Connect (OSTI)

    Schenck, Andrew; Park, Sangwook [Box 19059, Department of Physics, University of Texas at Arlington, Arlington, TX 76019 (United States); Burrows, David N. [Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802 (United States); Hughes, John P. [Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854-8019 (United States); Lee, Jae-Joon [Korea Astronomy and Space Science Institute, Daejeon 305-348 (Korea, Republic of); Mori, Koji, E-mail: andrew.schenck@mavs.uta.edu [Department of Applied Physics, University of Miyazaki, 1-1 Gakuen Kibana-dai Nishi, Miyazaki 889-2192 (Japan)

    2014-08-10

    We report on the initial results from our deep Chandra observation (450 ks) of O-rich supernova remnant (SNR) B0049-73.6 in the Small Magellanic Cloud. We detect small metal-rich ejecta features extending out to the outermost boundary of B0049-73.6, which were not seen in the previous data with a shorter exposure. The central nebula is dominated by emission from reverse-shocked ejecta material enriched in O, Ne, Mg, and Si. O-rich ejecta distribution is relatively smooth throughout the central nebula. In contrast, the Si-rich material is highly structured. These results suggest that B0049-73.6 was produced by an asymmetric core-collapse explosion of a massive star. The estimated abundance ratios among these ejecta elements are in plausible agreement with the nucleosynthesis products from the explosion of a 13-15 M{sub ?} progenitor. The central ring-like (in projection) ejecta nebula extends to ?9 pc from the SNR center. This suggests that the contact discontinuity may be located at a further distance from the SNR center than the previous estimate. We estimate the Sedov age of ?17,000 yr and an explosion energy of E{sub 0} ?1.7 × 10{sup 51} erg for B0049-73.6. We place a stringent upper limit on the 2-7 keV band luminosity of L{sub X} ? 8.5 × 10{sup 31} erg s{sup –1} for the embedded compact stellar remnant at the center of B0049-73.6.

  5. CARACTRISATION DU COMPORTEMENT HYDROGOLOGIQUE ET GOCHIMIQUE DES HALDES STRILES

    E-Print Network [OSTI]

    Aubertin, Michel

    géophysiques sont particulièrement intéressantes car elles fournissent une cartographie tridimensionnelle de la réactif des contaminants. De telles simulations aident à mieux comprendre la réponse de la halde dans son

  6. Smantique des dterminants dans un cadre richement typ Christian Retor

    E-Print Network [OSTI]

    description calculable des déterminants s'intègre parfaitement à l'analyseur à large échelle du français Grail in well within the wide coverage parser Grail, both from a theoretical and a practical viewpoint. MOTS

  7. Le pilotage des centres de recherche des ples de comptitivit Le cas du centre intgr MIRCen1

    E-Print Network [OSTI]

    Boyer, Edmond

    (Service hospitalier Frédéric Joliot), présent depuis avril 1959 à Orsay, NeuroSpin, inauguré en novembre. hal-00320879,version1-11Sep2008 Manuscrit auteur, publié dans "Vers le KM 2.0 : quel management des

  8. The origin of dust extinction curves with or without the 2175 A bump in galaxies: The case of the Magellanic Clouds

    E-Print Network [OSTI]

    Bekki, Kenji; Tsujimoto, Takuji

    2015-01-01

    The Large and Small Magellanic Clouds (LMC and SMC, respectively) are observed to have characteristic dust extinction curves that are quite different from those of the Galaxy (e.g., strength of the 2175 A bump). Although the dust composition and size distribution of the Magellanic Clouds (MCs) that can self-consistently explain their observed extinction curves have been already proposed, it remain unclear whether and how the required dust properties can be achieved in the formation histories of the MCs. We therefore investigate the time evolution of the dust properties of the MCs and thereby derive their extinction curves using one-zone chemical evolution models with formation and evolution of small and large silicate and carbonaceous dust grains and dusty winds associated with starburst events. We find that the observed SMC extinction curve without a conspicuous 2175 A bump can be reproduced well by our SMC model, if the small carbon grains can be selectively lost through the dust wind during the latest star...

  9. Multi-Frequency Study of Supernova Remnants in the Large Magellanic Cloud. The case of LMC SNR J0530-7007

    E-Print Network [OSTI]

    De Horta, A Y; Bozzetto, L M; Maggi, P; Haberl, F; Crawford, E J; Sasaki, M; Urosevi?, D; Pietsch, W; Gruendl, R; Dickel, J; Tothill, N F H; Chu, Y -H; Payne, J L; Collier, J D

    2012-01-01

    Context: The Supernova Remnants (SNRs) known in the Large Magellanic Cloud (LMC) show a variety of morphological structures in the different wavelength bands. This variety is the product of the conditions in the surrounding medium with which the remnant interacts and the inherent circumstances of the supernova event itself. Aims: This paper performs a multi-frequency study of the LMC SNR J0530-7007 by combining Australia Telescope Compact Array (ATCA), Molonglo Observatory Synthesis Telescope (MOST), R\\"ontgensatellit (ROSAT) and Magellanic Clouds Emission Line Survey (MCELS) observations. Methods: We analysed radio-continuum, X-ray and optical data and present a multi-wavelength morphological study of LMC SNR J0530-7007. Results We find that this object has a shell-type morphology with a size of 215"x180" (52 pc x 44 pc); a radio spectral index (alpha=-0.85+-0.13); with [Sii]/Halpha > 0.4 in the optical; and the presence of non-thermal radio and X-ray emission. Conclusions: We confirmed this object as a bona...

  10. Magellan observations of Quasars with Radio and X-Ray Jets Jonathan Gelbord, H.L. Marshall, B.P. Miller (MIT), D.A. Schwartz (SAO), D.M. Worrall, M. Birkinshaw (SAO

    E-Print Network [OSTI]

    Gelbord, Jonathan

    Magellan observations of Quasars with Radio and X-Ray Jets Jonathan Gelbord, H.L. Marshall, B of kiloparsec jet structures in flat-spectrum radio quasars (FSRQs). In the first phase of our study, we-arcsecond radio maps. We have discovered jet X-ray flux in 13 of these targets. In general the X-ray morphology

  11. Physical properties of emission-line galaxies at z ? 2 from near-infrared spectroscopy with Magellan fire

    SciTech Connect (OSTI)

    Masters, Daniel; Siana, Brian; Mobasher, Bahram; Domínguez, Alberto [Department of Physics and Astronomy, University of California, Riverside, CA 92521 (United States); McCarthy, Patrick; Blanc, Guillermo; Dressler, Alan [Carnegie Observatories, Pasadena, CA 91101 (United States); Malkan, Mathew; Ross, Nathaniel R. [Department of Physics and Astronomy, UCLA, Los Angeles, CA 90095 (United States); Atek, Hakim [Laboratoire d'Astrophysique Ecole Polytechnique Fédérale, CH-1290 Sauverny (Switzerland); Henry, Alaina [Astrophysics Science Division, Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Martin, Crystal L. [Department of Physics, Universitey of California, Santa Barbara, CA 93106 (United States); Rafelski, Marc; Colbert, James [Spitzer Science Center, California Institute of Technology, Pasadena, CA 91125 (United States); Hathi, Nimish P. [Aix Marseille Université, CNRS, LAM (Laboratoire d'Astrophysique de Marseille) UMR 7326, F-13388 Marseille (France); Scarlata, Claudia [Minnesota Institute for Astrophysics, University of Minnesota, Minneapolis, MN 55455 (United States); Bunker, Andrew J. [Department of Physics, University of Oxford (United Kingdom); Bedregal, Alejandro G. [Department of Physics and Astronomy, Tufts University, Medford, MA 02155 (United States); Teplitz, Harry [Infrared Processing and Analysis Center, Caltech, Pasadena, CA 91125 (United States)

    2014-04-20

    We present results from near-infrared spectroscopy of 26 emission-line galaxies at z ? 2.2 and z ? 1.5 obtained with the Folded-port InfraRed Echellette (FIRE) spectrometer on the 6.5 m Magellan Baade telescope. The sample was selected from the WFC3 Infrared Spectroscopic Parallels survey, which uses the near-infrared grism of the Hubble Space Telescope Wide Field Camera 3 (WFC3) to detect emission-line galaxies over 0.3 ? z ? 2.3. Our FIRE follow-up spectroscopy (R ? 5000) over 1.0-2.5 ?m permits detailed measurements of the physical properties of the z ? 2 emission-line galaxies. Dust-corrected star formation rates for the sample range from ?5-100 M {sub ?} yr{sup –1} with a mean of 29 M {sub ?} yr{sup –1}. We derive a median metallicity for the sample of 12 + log(O/H) = 8.34 or ?0.45 Z {sub ?}. The estimated stellar masses range from ?10{sup 8.5}-10{sup 9.5} M {sub ?}, and a clear positive correlation between metallicity and stellar mass is observed. The average ionization parameter measured for the sample, log U ? –2.5, is significantly higher than what is found for most star-forming galaxies in the local universe, but similar to the values found for other star-forming galaxies at high redshift. We derive composite spectra from the FIRE sample, from which we measure typical nebular electron densities of ?100-400 cm{sup –3}. Based on the location of the galaxies and composite spectra on diagnostic diagrams, we do not find evidence for significant active galactic nucleus activity in the sample. Most of the galaxies, as well as the composites, are offset diagram toward higher [O III]/H? at a given [N II]/H?, in agreement with other observations of z ? 1 star-forming galaxies, but composite spectra derived from the sample do not show an appreciable offset from the local star-forming sequence on the [O III]/H? versus [S II]/H? diagram. We infer a high nitrogen-to-oxygen abundance ratio from the composite spectrum, which may contribute to the offset of the high-redshift galaxies from the local star-forming sequence in the [O III]/H? versus [N II]/H? diagram. We speculate that the elevated nitrogen abundance could result from substantial numbers of Wolf-Rayet stars in starbursting galaxies at z ? 2.

  12. Direction gnrale des technologies de l'information et de la communication

    E-Print Network [OSTI]

    Charette, André

    (ITIL), qui lui permettra de revoir tout son processus de gestion des incidents et des requêtes et de sa première phase, l'implantation du référentiel ITIL touche surtout les processus nécessaires au bon

  13. Journal des Savants: From the Republic of Letters to the Cloud Library

    E-Print Network [OSTI]

    Potts, Claude H.

    2011-01-01

    d’une institution scienti?que: le Journal des Savants de1665 a 1714,’ Journal des Savants 1, 1 (2002), 202 4.scienti?que,’ 202 Journal of Scholarly Publishing 5.

  14. Direction gnrale des technologies de l'information et de la communication

    E-Print Network [OSTI]

    Charette, André

    Direction générale des technologies de l'information et de la communication Utilisation de base du connexion. #12;Direction générale des technologies de l'information et de la communication Utilisation de

  15. Direction gnrale des technologies de l'information et de la communication

    E-Print Network [OSTI]

    Charette, André

    Direction générale des technologies de l'information et de la communication Service vpn.umontreal.ca 15 mai 2009 #12; Direction générale des technologies de l'information et de la communication

  16. Direction gnrale des technologies de l'information et de la communication

    E-Print Network [OSTI]

    Charette, André

    Direction générale des technologies de l'information et de la communication Communiqué de presse, la Direction générale des technologies de l'information et de la communication (DGTIC) est

  17. Rectorat de l'acadmie de paris Annexe 4 DP 7 DP 8

    E-Print Network [OSTI]

    Mesbah, Mounir

    'avancement Conditions requises Date d'examen des conditions Conditions requises INFIRMIER HORS CLASSE - au moins 1 an d INFIRMIER DE CLASSE SUPERIEURE - au moins 9 ans de services effectifs dans un corps ou cadre d'emplois d'infirmiers de catégorie A ou dans un corps militaire d'infirmiers de niveau équivalent ; - dont 4 années

  18. Section des Units de recherche valuation de l'AERES sur l'unit

    E-Print Network [OSTI]

    représentant de l'AERES : M. Daniel GUEDALIA Représentant(s) des établissements et organismes tutelles de l

  19. EECBG Success Story: After 105 Years, Historic City Hall in West Des

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based|Department of Energy 8:Final78:20-CECONOMICA Tradition ofMoines, Iowa

  20. Aide aux dplacements l'tranger des enseignants-chercheurs de l'Universit du Maine

    E-Print Network [OSTI]

    Di Girolami, Cristina

    Aide aux déplacements à l'étranger des enseignants-chercheurs de l'Université du Maine retour'Université du Maine Le Service Recherche et le Service des Relations Internationales ont mis en place un-chercheurs, chercheurs et doctorants des laboratoires de l'Université du Maine. Il s'agit d'une aide strictement soumise

  1. INTRODUCTION SUR LA CARCINOGENESE BRONCHIQUE p. 10 I. Epidmiologie des cancers pulmonaires p. 10

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1 SOMMAIRE INTRODUCTION SUR LA CARCINOGENESE BRONCHIQUE p. 10 I. Epidémiologie des cancers pulmonaires p. 10 II. Histologie des cancers pulmonaires et classification pTNM p. 12 1. carcinomes épidermoïdes p. 13 2. carcinomes à petites cellules p. 13 3. adénocarcinomes p. 14 4. carcinomes à grandes

  2. Dvelopper une bibliothque de calculs sur des grands graphes lorsque la matrice

    E-Print Network [OSTI]

    Grigoras, .Romulus

    extrêmement favorables pour la faible complexité espace et temps des algorithmes de traitements. Dans ce les propriétés des graphes de terrain an d'optimiser le temps et l'espace des calculs (par l

  3. Traitement Automatique des Langues Naturelles, Marseille, 2014 Combiner espaces smantiques, structure et contraintes

    E-Print Network [OSTI]

    [DEFT-O.3] 20 21ème Traitement Automatique des Langues Naturelles, Marseille, 2014 Combiner espaces, and an approach based on constraints for the task 4. Mots-clés : Espaces sémantiques, Random Indexing, contraintes le même fondement : une représentation du sens des textes dans des espaces sémantiques construits en

  4. Certification des structures d'hospitalisation domicile VS certification ISO 9000

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Certification des structures d'hospitalisation à domicile VS certification ISO 9000 RYM BEN comparative entre la certification ISO 9000 (International Organisation for Standardization) et la certification des HAD. Il s'agit de comparer la certification ISO 9000 à celle des établissements de santé et

  5. Laboratoire interdisciplinaire d'valuation des politiques publiques LIEPP Working Paper

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    contextes hospitaliers locaux, à partir d'une enquête sur l'introduction des indicateurs nationaux de (Benamouzig & Pierru, 2011). Depuis les années 1990, des réformes inspirées du New Public management ont doté hospitaliers), ainsi que des supports d'information destinés à faciliter la contractualisation. Introduits à la

  6. N d'ordre 04ISAL0038 Anne 2004 Gestion prdictive des Blocs Opratoires

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Hospitalier, Hôpital de la Croix-Rousse Rapporteur Michel GOURGAND Professeur des Universités (Université peuvent être appliqués au domaine hospitalier. Mots clés : Gestion des Blocs Opératoires, Gestion des THEATRE PREDICTIVE MANAGEMENT ABSTRACT Due to the shortage of the human and financial resources

  7. Devenir des tudiants diplms de Licence Professionnelle en 2011 trente mois aprs l'obtention du diplme

    E-Print Network [OSTI]

    Chamroukhi, Faicel

    ont plus de 22 ans à l'obtention du diplôme. Les UFR/Instituts qui ont remis le plus de diplômes sont par ordre décroissant : l'IUT (Institut Universitaire de Technologie) (54,4 %), l'UFR Ingémédia (16,1% 4,4% 21 ans ou moins 25,3% 27,3% 22 ans 25,7% 26,5% 23 ans ou plus 49,0% 46,2% Faculté de Droit 12

  8. Review of Discrete X-Ray Sources in the Small Magellanic Cloud: Summary of the ASCA Results and Implication on the Recent Star Forming Activity

    E-Print Network [OSTI]

    Jun Yokogawa; Kensuke Imanishi; Masahiro Tsujimoto; Katsuji Koyama; Mamiko Nishiuchi

    2003-02-09

    We made 22 observations on the Small Magellanic Cloud (SMC) and covered full regions by the end of the ASCA mission. We detected 106 discrete sources with a criterion of S/N > 5 and performed systematic analyses on all of the sources. We determined the source positions with an ~40'' error radius (90% confidence) for sources detected in the central 20' radius of the GIS. We detected coherent pulsations from 17 sources. Among them, eight were newly discovered during this study. We classified most of these pulsars as X-ray binary pulsars (XBPs) based on their properties, such as the flux variability and the existence of an optical counterpart. We detected X-ray emission from eight supernova remnants (SNRs). Among them, five SNRs showed emission lines in their spectra, hence we regarded the five as thermal SNRs. We found that XBPs and thermal SNRs in the SMC can be clearly separated by their spectral hardness ratio. Applying this empirical law to faint (thus unclassified) sources, we found 19 XBP candidates and four thermal SNR candidates. We also found several tens of candidates for active galactic nuclei, both from the hardness ratio and the logN--logS relation of extragalactic sources. Based on these ASCA results and further information from other sattelites, we compiled comprehensive catalogues of discrete X-ray sources in the Small Magellanic Cloud. Using the catalogues, we derived the spatial distributions of XBPs and SNRs. XBPs and SNRs were found to be concentrated in the main body and eastern wing, which resembles the distribution of young stars with ages of ~2e7yr. By comparing the source populations in the SMC and our Galaxy, we suggest that the star-forming rate (per unit mass) in the SMC was much higher than the Galaxy 1e7yr ago. We also discuss the recent change of the star-forming rate in the SMC.

  9. Les communauts de pratique des infirmiers et infirmires sur internet : quelles contributions dans la construction de praxologies

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Les communautés de pratique des infirmiers et infirmières sur internet : quelles contributions dans infirmiers ? Quelle est la place des ressources disponibles sur le web et des réseaux sociaux dans les et à la construction identitaire des infirmiers ? Émergence de pratiques d'échanges professionnelles

  10. Rfrentiel des emplois-types de la recherche et de l'enseignement suprieur REFERENS imprimer la page

    E-Print Network [OSTI]

    Arleo, Angelo

    réglementaires. Piloter la politique d'achat et les procédures d'appel d'offre. Négocier et établir les contratsRéférentiel des emplois-types de la recherche et de l'enseignement supérieur REFERENS imprimer la recherche et d'enseignement supérieur. Le statut des structures et des personnels des établissements publics

  11. Magellan Final Report

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousandReport) |Administration Savannah River Site |

  12. Magellan-Tutorial.pptx

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverseIMPACTThousandReport) |Administration Savannah River Site |

  13. Diplomanden-und Doktorandenseminar des Instituts fr Informatik

    E-Print Network [OSTI]

    Zachmann, Gabriel

    Diplomanden- und Doktorandenseminar des Instituts für Informatik A data-centric Information be addressed essentially. A data-centric information architecture for large-scale industrial systems and elaboration of a data-centric architecture as foundation for distributed intelligence for large power networks

  14. DIFFUSION INELASTIQUE DES AIEUTRONS ET ONDES DE SPIN

    E-Print Network [OSTI]

    Boyer, Edmond

    measured in the three principal symmetry directions by neutron inelastic scattering.The spin wave of neutrons C(Eogo)scattered by a spin wave of energy Eo and wave vector qo satisfies the following diffusion inklastiquedes neutrons. On a trouvB que les relations de dispersion des ondes de spin

  15. Diplomanden-und Doktorandenseminar des Instituts fr Informatik

    E-Print Network [OSTI]

    Zachmann, Gabriel

    Datenkommunikation eines Remote Expert Maintenance Systems in der Instandhaltung der Volkswagen AG Braunschweig Abasin Gardiwal, TU Clausthal In größeren Unternehmen in der Industrie, wie z.B. bei der Volkswagen AG setzen. Hierdurch entstehen für die Volkswagen AG enorm hohe Kosten wie An- und Abfahrtskosten des

  16. GDR PHENIX & ISIS Salle des Th`eses

    E-Print Network [OSTI]

    Dauxois, Thierry

    GDR PHENIX & ISIS ENS Lyon Salle des Th`eses 46 all´ee d'Italie, Lyon 7`eme M´etro Stade de Gerland Isis (jean-yves.tourneret@enseeiht.fr,cecile.guion@enst.fr) pour ceux issus de la communaut. Flandrin (ENS Lyon) pour Isis et E. Bertin, T. Dauxois (ENS Lyon) pour Ph´enix. 2 #12;

  17. ASSOCIATION DES CADRES DE L'COLE POLYTECHNIQUE

    E-Print Network [OSTI]

    Meunier, Michel

    Protocole ACEP 06-09-26 au 09-05-31 #12;Veuillez noter que les membres de l'ACEP, lors de l'Association. Protocole ACEP Page 2 sur 43 06-09-26 au 09-05-31 #12;TABLE DES MATIÈRES Page Article 1 OBJET DU PROTOCOLE

  18. Rtrage zum Operations Research Kolloquium des Instituts fur Operations Research

    E-Print Network [OSTI]

    Stein, Oliver

    V O Rtr¨age zum Operations Research Kolloquium des Instituts f¨ur Operations Research Zeit conditions for their stability. Die Vortr¨age zum Operations Research wenden sich an alle Interessierten! Ab 17:00 Uhr ist am Institut f¨ur Operations Research (Geb¨aude 20.13, Raum 104) Gelegenheit zu einem

  19. Diplomanden-und Doktorandenseminar des Instituts fr Informatik

    E-Print Network [OSTI]

    Zachmann, Gabriel

    Diplomanden- und Doktorandenseminar des Instituts für Informatik Six Sigma im Im üblichen Sinne wird Six Sigma insbesondere in Fertigungsindustrien wie zum Beispiel in der ist Six Sigma nicht nur eine Managementstrategie, die sich ausschlie�lich auf die Fertigungsindustrie

  20. LES DETERMINANTS DES COMPETENCES DE LA FONCTION GESTION-FINANCE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    LES DETERMINANTS DES COMPETENCES DE LA FONCTION GESTION-FINANCE Pierre-Laurent, Bescos Professeur'enjeu est de donner alors aux étudiants et professionnels de la fonction gestion-finance une formation de, les aptitudes et les grades au sein de la fonction gestion-finance. Mots clés : compétences, enquête

  1. Autour des services web Georges-Andr SILBER

    E-Print Network [OSTI]

    Silber, Georges-André

    : Premier navigateur Web diffusé: NCSA Mosaic · 200x: HTML 4.01, CSS 2.0, JavaScript,AJAX · Etat de lAutour des services web Georges-André SILBER Centre de recherche en informatique MINES Paris, Podcast, REST, RDF, ... #12;Petit tour du Web #12;· Le World Wide Web est né dans les années 90 · Internet

  2. INSTITUT DES SCIENCES ET TECHNOLOGIES Ecole doctorale nO

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    publiquement par Cécile CRIDELICH le 12 décembre 2011 Management du risque à l'hôpital évaluation d recherches, CRC - Mines ParisTech Examinateur M. Rémy COLLOMP, Docteur, Centre Hospitalier Universitaire de évolutions actuelles 29 1.1 Les pratiques courantes en gestion des risques en établissement hospitalier

  3. Les dtracteurs des drones leur reprochent de faire de la

    E-Print Network [OSTI]

    van Willigenburg, Stephanie

    Les détracteurs des drones leur reprochent de faire de la cyberguerre un jeu vidéo. Cette analogie captées par les drones,animéesetenhauteréso- lution, ressemblent à celles d'un jeu vidéo. Mais lorsqu'ils font cette comparaison, leurs détrac- teurs reprochent plutôt aux drones de créer de la distance avec

  4. Iowa Community College Campuses Reduce Energy Use

    Broader source: Energy.gov [DOE]

    Des Moines Area Community College (DMACC) serves more than 65,000 Iowans on six campuses, making it the largest two-year college in the state of Iowa.

  5. Microsoft Word - winter.doc

    Gasoline and Diesel Fuel Update (EIA)

    the 60s and 70s. Record high temperatures were reported in cities from Des Moines to Baltimore. The daily temperature range was between 55 to 75 degrees in many cities in the...

  6. Table 2. Ten largest plants by generation capacity, 2013

    U.S. Energy Information Administration (EIA) Indexed Site

    8,"Greater Des Moines","Natural gas","MidAmerican Energy Co",492.6 9,"Rolling Hills Wind Farm","Wind","MidAmerican Energy Co",443.9 10,"Pioneer Prairie Wind...

  7. Comptes Rendus des JNC 17 -Poitiers 2011 Caractrisation des endommagements d'un composite Carbone/PA12 par

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    from a library of signals previously labeled a classification and an automatic labeling of the signals en jeu qui conduisent à la ruine de la structure. Une technique de classification supervisée a été labellisés une classification et une labellisation automatique des signaux en temps réel. Abstract

  8. Mouvements actuels des blocs tectoniques dans l'arc Btico-Rifain partir des mesures GPS entre 1999 et 2005

    E-Print Network [OSTI]

    Demouchy, Sylvie

    GPS entre 1999 et 2005 Abdelilah Tahayt a,b , Taoufik Mourabit a,1 , Alexis Rigo b,*, Kurt L. Feigl b (2008). # 2007 Académie des sciences. Publié par Elsevier Masson SAS. Tous droits réservés. Abstract Present-day movements of tectonic blocks in the Betic­Rif Arc from GPS measurements 1999­2005. GPS

  9. FACULTE DES SCIENCES & TECHNIQUES FACULTE DE CHIMIE U.F.R. Sciences & Techniques de la Matire et des Procds

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    des Matériaux par Kristina Ilcheva LILOVA Thermochemical and topological studies of systems Optimisation of the Co­Sn Binary System 36 Literature review 36 Experimental studies of enthalpy of formation of liquid Co-Sn alloys 40 Experimental studies of the enthalpies of formation of solid Co-Sn phases 51 Phase

  10. An outline of American state literature

    E-Print Network [OSTI]

    Dershem, Elsie

    1916-01-01

    . Poetic Paralles and Similies in Song. 1892. Perkins, 17. R. Elensis and Lesser Poems. 1892. Pinkerton, Golin M. Des Moines. Buckeye Hawkeya School Master. Putnam, Frank. East Minton, Mass. Battle Gall for Cuba, verse. 1898. Reid, Harvey. Maquoketa.... Poetic Paralles and Similies in Song. 1892. Perkins, 17. R. Elensis and Lesser Poems. 1892. Pinkerton, Golin M. Des Moines. Buckeye Hawkeya School Master. Putnam, Frank. East Minton, Mass. Battle Gall for Cuba, verse. 1898. Reid, Harvey. Maquoketa...

  11. Section des Units de recherche Rapport de l'AERES sur

    E-Print Network [OSTI]

    Vallette, Bruno

    Section des Unités de recherche Rapport de l'AERES sur l'unité : Laboratoire de Mathématiques J. A représentant de l'AERES : M. Christian LE MERDY Représentant(s) des établissements et organismes tutelles de l des six équipes de recherche du laboratoire. Effectifs de l'unité (sur la base du dossier déposé à l'AERES

  12. ENS DE LYON au Collge des Hautes tudes

    E-Print Network [OSTI]

    Dellandréa, Emmanuel

    ENS DE LYON Bienvenue au Collège des Hautes �tudes Lyon Science[s] Le CHELS en bref Modalités d'inscription adaptabilité créativité esprit d'entreprise http://www.ec-lyon.fr/formation http://www.ens-lyon.eu/etudes/ http://www.sciencespo.fr/formations http://vetagro-sup.fr/formation http://www.cnsmd-lyon.fr Votre établissement est membre fondateur du

  13. Canal sans fils: utilisation de la diversit des canaux multi-trajets

    E-Print Network [OSTI]

    Andriyanova, Iryna

    : codage+entrelacement des blocs Diversité en espace: terminaux multi-antennes et codes espace-temps 1 / 23

  14. Studienplan fr das Bachelor-und Master-Studien-programm Kulturgeschichte und Archologie des vorisla-

    E-Print Network [OSTI]

    Sola, Rolf Haenni

    Institut für Sprachen der bibli- schen Welt und des christlichen Ostens der Theologischen Fa- kultät der

  15. SD 1313-0019 -- Another second-generation star with [Fe/H] = -5.0, observed with the Magellan Telescope

    E-Print Network [OSTI]

    Frebel, Anna; Ji, Alexander P; Jacobson, Heather R; Placco, Vinicius M

    2015-01-01

    We present a Magellan/MIKE high-resolution (R ~ 35,000) spectrum of the ancient star SD 1313-0019 which has an iron abundance of [Fe/H] = -5.0, paired with a carbon enhancement of [C/Fe] ~ 3.0. The star was initially identified by Allende Prieto et al. in the BOSS survey. Its medium-resolution spectrum suggested a higher metallicity of [Fe/H] = -4.3 due to the CaII K line blending with a CH feature which is a common issue related to the search for the most iron-poor stars. This star joins several other, similar stars with [Fe/H] < -5.0 that all display a combination of low iron and high carbon abundances. Other elemental abundances of SD 1313-0019 follow that of more metal-rich halo stars. From fitting the abundance pattern with yields of Population III supernova, we conclude that SD 1313-0019 had only one massive progenitor star with 20 - 30 M_sun that must have undergone a mixing and fallback episode. Overall, there are now five stars known with [Fe/H] < -5.0 (1D LTE abundances). This population of se...

  16. Identification of a Class of Low-Mass Asymptotic Giant Branch Stars Struggling to Become Carbon Stars in the Magellanic Clouds

    E-Print Network [OSTI]

    Boyer, Martha L; Srinivasan, Sundar; Zijlstra, Albert; van Loon, Jacco Th; Olsen, Knut A G; Sonneborn, George

    2015-01-01

    We have identified a new class of Asymptotic Giant Branch (AGB) stars in the Small and Large Magellanic Clouds (SMC/LMC) using optical to infrared photometry, light curves, and optical spectroscopy. The strong dust production and long-period pulsations of these stars indicate that they are at the very end of their AGB evolution. Period-mass-radius relations for the fundamental-mode pulsators give median current stellar masses of 1.14 M_sun in the LMC and 0.94 M_sun in the SMC (with dispersions of 0.21 and 0.18 M_sun, respectively), and models suggest initial masses of chemistries, placing the limit where dredge-up allows carbon star production below these masses. A high fraction of the brightest among them should show S star characteristics indicative of atmospheric C/O ~ 1, and many will form O-rich dust prior to their C-rich phase. These stars can be separated from their less-evolved counterparts by their...

  17. A 10 kpc stellar stream at the edge of the Large Magellanic Cloud: evidence for tidal stripping of the outer disk?

    E-Print Network [OSTI]

    Mackey, Dougal; Erkal, Denis; Belokurov, Vasily; Da Costa, Gary S; Gómez, Facundo A

    2015-01-01

    We report the discovery of a substantial stellar stream in the periphery of the Large Magellanic Cloud (LMC), found using public imaging from the first year of the Dark Energy Survey. The stream appears to emanate from the edge of the outer LMC disk at a radius $\\approx 13.5$ degrees due north of its centre, and stretches more than $10$ kpc towards the east. It is roughly $1.5$ kpc wide and has an integrated $V$-band luminosity of at least $M_V = -7.4$. The stellar populations in the stream are indistinguishable from those in the outer LMC disk. We attempt to quantify the geometry of the outer disk using simple planar models, and find that only a disk with mild intrinsic ellipticity can simultaneously explain the observed stellar density on the sky and the azimuthal line-of-sight distance profile. We also see possible non-planar behaviour in the outer disk that may reflect a warp and/or flare. Based on all these observations, we conclude that the stream is most likely comprised of material that has been strip...

  18. Spitzer SAGE-Spec: Near infrared spectroscopy, dust shells, and cool envelopes in extreme Large Magellanic Cloud asymptotic giant branch stars

    SciTech Connect (OSTI)

    Blum, R. D. [NOAO, 950 North Cherry Avenue, Tucson, AZ 85719 (United States); Srinivasan, S.; Kemper, F.; Ling, B. [Academia Sinica, Institute of Astronomy and Astrophysics, 11F of Astronomy-Mathematics Building, NTU/AS, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan (China); Volk, K. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States)

    2014-11-01

    K-band spectra are presented for a sample of 39 Spitzer Infrared Spectrograph (IRS) SAGE-Spec sources in the Large Magellanic Cloud. The spectra exhibit characteristics in very good agreement with their positions in the near-infrared—Spitzer color-magnitude diagrams and their properties as deduced from the Spitzer IRS spectra. Specifically, the near-infrared spectra show strong atomic and molecular features representative of oxygen-rich and carbon-rich asymptotic giant branch stars, respectively. A small subset of stars was chosen from the luminous and red extreme ''tip'' of the color-magnitude diagram. These objects have properties consistent with dusty envelopes but also cool, carbon-rich ''stellar'' cores. Modest amounts of dust mass loss combine with the stellar spectral energy distribution to make these objects appear extreme in their near-infrared and mid-infrared colors. One object in our sample, HV 915, a known post-asymptotic giant branch star of the RV Tau type, exhibits CO 2.3 ?m band head emission consistent with previous work that demonstrates that the object has a circumstellar disk.

  19. Ultra-Deep Hubble Space Telescope Imaging of the Small Magellanic Cloud: The Initial Mass Function of Stars with M <~ 1 Msun

    E-Print Network [OSTI]

    Kalirai, Jason S; Dotter, Aaron; Richer, Harvey B; Fahlman, Gregory G; Hansen, Brad M S; Hurley, Jarrod; Reid, I Neill; Rich, R Michael; Shara, Michael M

    2012-01-01

    We present a new measurement of the stellar initial mass function (IMF) based on ultra-deep, high-resolution photometry of >5,000 stars in the outskirts of the Small Magellanic Cloud (SMC) galaxy. The Hubble Space Telescope (HST) Advanced Camera for Surveys (ACS) observations reveal this rich, co-spatial population behind the foreground globular cluster 47 Tuc, which we targeted for 121 HST orbits. The stellar main sequence of the SMC is measured in the F606W, F814W color-magnitude diagram (CMD) down to ~30th magnitude, and is cleanly separated from the foreground star cluster population using proper motions. We simulate the SMC population by extracting stellar masses (single and unresolved binaries) from specific IMFs, and converting those masses to luminosities in our bandpasses. The corresponding photometry for these simulated stars is drawn directly from a rich cloud of 4 million artificial stars, thereby accounting for the real photometric scatter and completeness of the data. Over a continuous and well ...

  20. Integral Field Spectroscopy of Massive Young Stellar Objects in the N113 H\\,{\\sc ii} Region in the Large Magellanic Cloud

    E-Print Network [OSTI]

    Ward, J L; van Loon, J Th; Sewilo, M

    2015-01-01

    The \\textit{Spitzer} SAGE survey has allowed the identification and analysis of significant samples of Young Stellar Object (YSO) candidates in the Large Magellanic Cloud (LMC). However the angular resolution of \\textit{Spitzer} is relatively poor meaning that at the distance of the LMC, it is likely that many of the \\textit{Spitzer} YSO candidates in fact contain multiple components. We present high resolution \\textit{K}-band integral field spectroscopic observations of the three most prominent massive YSO candidates in the N113 H\\,{\\sc ii} region using VLT/SINFONI. We have identified six \\textit{K}-band continuum sources within the three \\textit{Spitzer} sources and we have mapped the morphology and velocity fields of extended line emission around these sources. Br$\\gamma$, He\\,{\\sc i} and H$_2$ emission is found at the position of all six \\textit{K}-band sources; we discuss whether the emission is associated with the continuum sources or whether it is ambient emission. H$_2$ emission appears to be mostly a...

  1. Optical and X-ray variability of two Small Magellanic Cloud X-ray binary pulsars - SXP46.6 and SXP6.85

    E-Print Network [OSTI]

    K. E. McGowan; M. J. Coe; M. P. E. Schurch; R. H. D. Corbet; J. L. Galache; A. Udalski

    2007-11-26

    We present long-term optical and RXTE data of two X-ray binary pulsars in the Small Magellanic Cloud, SXP46.6 and SXP6.85. The optical light curves of both sources show substantial (~0.5-0.8 mag) changes over the time span of the observations. While the optical data for SXP6.85 do not reveal any periodic behaviour, by detrending the optical measurements for SXP46.6 we find an orbital period of ~137 days, consistent with results from the X-ray data. The detection of Type I X-ray outbursts from SXP46.6, combined with the fact that we also see optical outbursts at these times, implies that SXP46.6 is a high orbital eccentricity system. Using contemporaneous optical spectra of SXP46.6 we find that the equivalent width of the H_alpha emission line changes over time indicating that the size of the circumstellar disc varies. By studying the history of the colour variations for SXP6.85 we find that the source gets redder as it brightens which can also be attributed to changes in the circumstellar disc. We do not find any correlation between the X-ray and optical data for SXP6.85. The results for SXP6.85 suggest that it is a low eccentricity binary and that the optical modulations are due to the Be phenomenon.

  2. Detection of a 522 s Pulsation from the Transient X-ray Source Suzaku J0102.8--7204 (SXP 523) in the Small Magellanic Cloud

    E-Print Network [OSTI]

    Wada, Qazuya; Ebisawa, Ken; Miller, Eric D

    2013-01-01

    During a routine calibration observation of 1E0102.2-7219 in the Small Magellanic Cloud (SMC) carried out in October 2012 for the Suzaku satellite, we detected a transient X-ray source at (RA, Dec) = (01h02m47s, -72d04m54s) in the equinox J2000.0 with a positional uncertainty of ~1"4. We conducted a temporal and spectral analysis of the source and found a coherent pulse signal with a period of 522.3 +/- 0.1 s, and a featureless spectrum described by a single power-law model with a photon index of 1.0 +/- 0.1 and a 0.5-10 keV luminosity of 8.8 x 10^35 erg s^-1 at an assumed distance of 60 kpc. The Suzaku source is likely to be the counterpart of 2XMMJ010247.4-720449, which has been observed several times, including during outburst by Swift. Based on the X-ray characteristics in our data, as well as the transient record and optical and near-infrared features in the literature, we conclude that this source is a high-mass X-ray binary pulsar with a Be star companion in the SMC, which is known to harbor an excepti...

  3. STRUCTURE ET ENREGISTREMENT DES TRACES LATENTES D'IONS ARGON ET FER DANS L'OLIVINE ET LE MICA MUSCOVITE

    E-Print Network [OSTI]

    Boyer, Edmond

    attaque chimique : l'enre- gistrement des traces n'apparaît pas lié à un mécanisme à seuil énergétique

  4. Tableau de bord des formaTions de l'universiT de franche-comT

    E-Print Network [OSTI]

    Jeanjean, Louis

    la formation d'infirmier à partir de 2009 en- traîne une intégration progressive des élèves dans les

  5. Kathy Martin, Ph.D. L es gens croient gnralement que les oiseaux construisent leur nid la jonction des

    E-Print Network [OSTI]

    construisent leur nid à la jonction des branches d'arbre. C'est ce que certains oiseaux font, mais d'autres habitent dans des cavités qu'ils percent ou trouvent dans les troncs. Ces cavités forment des nids plus le nid pour chercher la nourriture sans trop craindre pour la sécurité de leurs petits. Comme les

  6. Apprciation simple de la maturit des composts urbains en relation avec leurs effets sur la pro-

    E-Print Network [OSTI]

    Boyer, Edmond

    Appréciation simple de la maturité des composts urbains en relation avec leurs effets sur la pro54500 Vandceuvre RÉSUMÉ Des composts prélevés dans différentes usines après divers temps de maturation de composts jeunes, puis cet effet s'atténue et devient même positif après plusieurs mois de

  7. Section des Units de recherche Rapport de l'AERES sur l'unit

    E-Print Network [OSTI]

    Section des Unités de recherche Rapport de l'AERES sur l'unité : Groupe d'études de l représentant de l'AERES : M. Daniel GUEDALIA Représentant(s) des établissements et organismes tutelles de l

  8. projet conjoint parrain par la Fondation Shell et Shell Gabon, des chercheurs de l'Institution

    E-Print Network [OSTI]

    Baker, Robert J.

    projet conjoint parrainé par la Fondation Shell et Shell Gabon, des chercheurs de l, le Cameroun et la Guinée-Équatoriale. Le pays est baigné par un climat tropical humide avec une'orientation par écholocation des Microchiroptères représente une adaptation évolutive unique à la vie nocturne

  9. EFFETS DE COHRENCE ZEEMAN DANS UNE VAPEUR ATOMIQUE EXCITE PAR DES LECTRONS LENTS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    directly excited from the ground state, then a cascade decay. Within a radiofrequency field, the resonant appartenant a des niveaux differents (voir [5]) ; si un champ de radiofrequence 6tablit des transitions aligni, ni orienti et que le seul temps de relaxation dans l'itat exciti est la durée de vie radiative

  10. Le Lait (1983), 63, 425-442 Teneurs en NOx du lait et des produits laitiers

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    1983-01-01

    de naphtylèthylènediamine (N.E.D.) après réduction des nitrates sur une colonne de cadmium. Les for a nitrate reduction on a cadmium column in the presence of sulfanylamid and N.E.D. (at 540 nrn .. .. .. .. .. .. .. .. .. 429 II.2. Dosage des nitrates .. .. .... .. .. .. .. .. 429 II.2.1. Méthodes spectrométriques

  11. SPECTROSCOPIE DES ONDES DE 1 A 5 mm (1) Par WALTER GORDY,

    E-Print Network [OSTI]

    Boyer, Edmond

    'effectua,it la transition dont j'ai parlé plus haut, Loubser et Townes [3] détectèrent le rayon- nement des'atténuation de cer- taines substances à des fréquences bien déterminées. Le klystron a beaucoup d'avantages sur

  12. Comparaison de schemas de decomposition en ondelettes pour un traitement local des maillages surfaciques triangulaires

    E-Print Network [OSTI]

    Wolf, Christian

    ´etaill´ee. Bien que les espaces de stockage des ordinateurs et la vitesse de transmission des r´eseaux ne cessent `a dissimuler. Pour cela, on utilise g´en´eralement l'espace fr´equentiel dans lequel les informa

  13. Static Fault Attack on Hardware DES Registers Philippe Loubet-Moundi, Francis Olivier, and David Vigilant

    E-Print Network [OSTI]

    International Association for Cryptologic Research (IACR)

    Static Fault Attack on Hardware DES Registers Philippe Loubet-Moundi, Francis Olivier, and David deals with static faults which lie in between. A static fault modifies a value loaded in a volatile], quickly became a privileged target for DFA. #12;2 Static Fault Attacks on Hardware DES Registers Indeed

  14. 2 Gbps SerDes Design Based on IBM Cu-11 (130nm) Standard Cell Technology

    E-Print Network [OSTI]

    Draper, Jeff

    2 Gbps SerDes Design Based on IBM Cu-11 (130nm) Standard Cell Technology Rashed Zafar Bhatti EE Denneau IBM T.J. Watson Research Center Yorktown Heights, NY 10598 denneau@us.ibm.com Jeff Draper of jitter. Power consumption of the proposed SerDes design is 30 mW per serial link targeted to IBM Cu-11

  15. LISTE DES PUBLICATIONS EN FIABILITE (les numros font rfrence la liste complre)

    E-Print Network [OSTI]

    Cocozza-Thivent, Christiane

    probabiliste approchée des grands arbres de défaillance. Recherche Opérationnelle,/ Operations Research, 26 1993. [A24] C. Cocozza-Thivent : Calcul de grandeurs utiles à la maintenance pour des matériels réparés-Thivent., M. Roussignol : Semi-Markov processus for reliability studies. ESAIM : Probability and Statistics, 1

  16. Code d'thique et de dontologie des membres du Conseil d'administration

    E-Print Network [OSTI]

    Laval, Université

    Code d'éthique et de déontologie des membres du Conseil d'administration de l'Université Laval Approuvée : Conseil d'administration (Résolution CA-98-13) Modifiée : Conseil d'administration (Résolution PRÉSENT CODE ............................................ 3 II. DEVOIRS GÉNÉRAUX DES MEMBRES DU CONSEIL D'ADMINISTRATION

  17. Direction des ressources humaines Mission Insertion Handicap -05/06/2012 Fiche de poste

    E-Print Network [OSTI]

    van Tiggelen, Bart

    : Délégation Paris A FONCTION : Infirmier(e) MISSION : Rattaché(e) administrativement au médecin animateur régional, l'infirmier(e) de santé au travail assiste les médecins de prévention dans l'ensemble de leurs infirmier, le registre des incidents et accidents... Participer au déroulement des visites médicales en

  18. Facult des sciences infirmires Le Baccalaurat en sciences infirmires est offert selon divers par-

    E-Print Network [OSTI]

    Parrott, Lael

    -Baccalauréat intégré et à l'intention des infirmières et infirmiers en exercice. ­ Les programmes 1-630-4-0, 1 professionnelles L'article 36 de la Loi sur les infirmières et les infirmiers (Lii, art. 36, 2002) présente ainsi le champ de pratique des infirmières : « L'exercice infirmier consiste à évaluer l'état de santé d

  19. La Charte dveloppement durable des tablissements publics et entreprises publiques est l'expression

    E-Print Network [OSTI]

    Jeanjean, Louis

    organismes s'engagent à intégrer ces principes dans leur propre stratégie, leur management et leurs relations Centre des monuments nationaux Centre hospitalier universitaire de Brest Chambre de commerce et d les systèmes de management et d'évaluation des performances. Il est régulièrement évoqué au Conseil d

  20. Direction gnrale des technologies de l'information et de la communication

    E-Print Network [OSTI]

    Charette, André

    Direction générale des technologies de l'information et de la communication Communiqué Rehaussement des prises réseau en accès libre 20 mai 2010 Bonjour, Nous désirons vous informer qu complément d'information, une foire aux questions (FAQ) est disponible sur le site web de la DGTIC et sera

  1. Direction gnrale des technologies de l'information et de la communication

    E-Print Network [OSTI]

    Charette, André

    Direction générale des technologies de l'information et de la communication Communiqué de presse La technologies de l'information et de la communication (DGTIC) est heureuse d'annoncer l'achèvement de la DGTIC à identifier et à réduire les coûts pour l'ensemble des services liés aux technologies de l'information

  2. L'cole Centrale de Lyon a pour mission de former des ingnieurs gnralistes et des docteurs disciplinaires ouverts sur le monde. la

    E-Print Network [OSTI]

    Dellandréa, Emmanuel

    L'�cole Centrale de Lyon a pour mission de former des ingénieurs généralistes et des docteurs atouts L'�COLE CENTRALE DE LYON Créditsphoto©ECL-YJegou FORMATION · 6 départements d'enseignement et de valorisation en cours. CONTACT ddre@listes.ec-lyon.fr + 33 (0)4 72 18 60 00 VALEURS > Engagement : agir de

  3. DUST AND GAS IN THE MAGELLANIC CLOUDS FROM THE HERITAGE HERSCHEL KEY PROJECT. I. DUST PROPERTIES AND INSIGHTS INTO THE ORIGIN OF THE SUBMILLIMETER EXCESS EMISSION

    SciTech Connect (OSTI)

    Gordon, Karl D.; Roman-Duval, Julia; Meixner, Margaret; Bot, Caroline; Babler, Brian; Bernard, Jean-Philippe; Bolatto, Alberto; Jameson, Katherine; Boyer, Martha L.; Clayton, Geoffrey C.; Engelbracht, Charles; Fukui, Yasuo; Galametz, Maud; Galliano, Frederic; Hony, Sacha; Lebouteiller, Vianney; Indebetouw, Remy; Israel, Frank P.; Kawamura, Akiko; and others

    2014-12-20

    The dust properties in the Large and Small Magellanic clouds (LMC/SMC) are studied using the HERITAGE Herschel Key Project photometric data in five bands from 100 to 500 ?m. Three simple models of dust emission were fit to the observations: a single temperature blackbody modified by a power-law emissivity (SMBB), a single temperature blackbody modified by a broken power-law emissivity (BEMBB), and two blackbodies with different temperatures, both modified by the same power-law emissivity (TTMBB). Using these models, we investigate the origin of the submillimeter excess, defined as the submillimeter emission above that expected from SMBB models fit to observations <200 ?m. We find that the BEMBB model produces the lowest fit residuals with pixel-averaged 500 ?m submillimeter excesses of 27% and 43% for the LMC and SMC, respectively. Adopting gas masses from previous works, the gas-to-dust ratios calculated from our fitting results show that the TTMBB fits require significantly more dust than are available even if all the metals present in the interstellar medium (ISM) were condensed into dust. This indicates that the submillimeter excess is more likely to be due to emissivity variations than a second population of colder dust. We derive integrated dust masses of (7.3 ± 1.7) × 10{sup 5} and (8.3 ± 2.1) × 10{sup 4} M {sub ?} for the LMC and SMC, respectively. We find significant correlations between the submillimeter excess and other dust properties; further work is needed to determine the relative contributions of fitting noise and ISM physics to the correlations.

  4. A MAGELLAN MIKE AND SPITZER MIPS STUDY OF 1.5-1.0 M{sub sun} STARS IN SCORPIUS-CENTAURUS

    SciTech Connect (OSTI)

    Chen, Christine H.; Bitner, Martin A.; Mamajek, Eric E.; Pecaut, Mark; Su, Kate Y. L.; Weinberger, Alycia J.

    2011-09-10

    We obtained Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS) 24 {mu}m and 70 {mu}m observations of 182 nearby, Hipparcos F- and G-type common proper motion single and binary systems in the nearest OB association, Scorpius-Centaurus. We also obtained Magellan/MIKE R {approx} 50,000 visual spectra at 3500-10500 A for 181 candidate ScoCen stars in single and binary systems. Combining our MIPS observations with those of other ScoCen stars in the literature, we estimate 24 {mu}m F+G-type disk fractions of 9/27 (33% {+-} 11%), 21/67 (31% {+-} 7%), and 25/71 (35% {+-} 7%) for Upper Scorpius ({approx}10 Myr), Upper Centaurus Lupus ({approx}15 Myr), and Lower Centaurus Crux ({approx}17 Myr), respectively. We confirm previous IRAS and MIPS excess detections and present new discoveries of 41 protoplanetary and debris disk systems, with fractional infrared luminosities ranging from L{sub IR}/L{sub *} = 10{sup -5} to 10{sup -2} and grain temperatures ranging from T{sub gr} = 40-300 K. We searched for an increase in 24 {mu}m excess at an age of 15-20 Myr, consistent with the onset of debris production predicted by coagulation N-body simulations of outer planetary systems. We found such an increase around 1.5 M{sub sun} stars but discovered a decrease in the 24 {mu}m excess around 1.0 M{sub sun} stars. We additionally discovered that the 24 {mu}m excess around 1.0 M{sub sun} stars is larger than predicted by self-stirred models. Finally, we found a weak anti-correlation between fractional infrared luminosity (L{sub IR}/L{sub *}) and chromospheric activity (R'{sub HK}), that may be the result of differences in stellar properties, such as mass, luminosity, and/or winds.

  5. ULTRA-DEEP HUBBLE SPACE TELESCOPE IMAGING OF THE SMALL MAGELLANIC CLOUD: THE INITIAL MASS FUNCTION OF STARS WITH M {approx}< 1 M {sub Sun}

    SciTech Connect (OSTI)

    Kalirai, Jason S.; Anderson, Jay; Dotter, Aaron; Reid, I. Neill; Richer, Harvey B.; Fahlman, Gregory G.; Hansen, Brad M. S.; Rich, R. Michael; Hurley, Jarrod; Shara, Michael M. E-mail: jayander@stsci.edu E-mail: richer@astro.ubc.ca E-mail: hansen@astro.ucla.edu E-mail: jhurley@swin.edu.au

    2013-02-15

    We present a new measurement of the stellar initial mass function (IMF) based on ultra-deep, high-resolution photometry of >5000 stars in the outskirts of the Small Magellanic Cloud (SMC) galaxy. The Hubble Space Telescope (HST) Advanced Camera for Surveys observations reveal this rich, cospatial population behind the foreground globular cluster 47 Tuc, which we targeted for 121 HST orbits. The stellar main sequence of the SMC is measured in the F606W, F814W color-magnitude diagram down to {approx}30th magnitude, and is cleanly separated from the foreground star cluster population using proper motions. We simulate the SMC population by extracting stellar masses (single and unresolved binaries) from specific IMFs and converting those masses to luminosities in our bandpasses. The corresponding photometry for these simulated stars is drawn directly from a rich cloud of 4 million artificial stars, thereby accounting for the real photometric scatter and completeness of the data. Over a continuous and well-populated mass range of M = 0.37-0.93 M {sub Sun} (e.g., down to a {approx}75% completeness limit at F606W = 28.7), we demonstrate that the IMF is well represented by a single power-law form with slope {alpha} = -1.90 ({sup +0.15} {sub -0.10}) (3{sigma} error) (e.g., dN/dM{proportional_to} M {sup {alpha}}). This is shallower than the Salpeter slope of {alpha} = -2.35, which agrees with the observed stellar luminosity function at higher masses. Our results indicate that the IMF does not turn over to a more shallow power-law form within this mass range. We discuss implications of this result for the theory of star formation, the inferred masses of galaxies, and the (lack of a) variation of the IMF with metallicity.

  6. METAL-POOR STARS OBSERVED WITH THE MAGELLAN TELESCOPE. I. CONSTRAINTS ON PROGENITOR MASS AND METALLICITY OF AGB STARS UNDERGOING s-PROCESS NUCLEOSYNTHESIS

    SciTech Connect (OSTI)

    Placco, Vinicius M.; Rossi, Silvia [Departamento de Astronomia-Instituto de Astronomia, Geofisica e Ciencias Atmosfericas, Universidade de Sao Paulo, Sao Paulo, SP 05508-900 (Brazil); Frebel, Anna [Massachusetts Institute of Technology and Kavli Institute for Astrophysics and Space Research, 77 Massachusetts Avenue, Cambridge, MA 02139 (United States); Beers, Timothy C. [National Optical Astronomy Observatory, Tucson, AZ 85719 (United States); Karakas, Amanda I.; Kennedy, Catherine R. [Research School of Astronomy and Astrophysics, The Australian National University, Cotter Road, Weston, ACT 2611 (Australia); Christlieb, Norbert [Zentrum fuer Astronomie der Universitaet Heidelberg, Landessternwarte, Koenigstuhl 12, D-69117 Heidelberg (Germany); Stancliffe, Richard J. [Argelander-Institut fuer Astronomie der Universitaet Bonn, Auf dem Huegel 71, D-53121 Bonn (Germany)

    2013-06-20

    We present a comprehensive abundance analysis of two newly discovered carbon-enhanced metal-poor (CEMP) stars. HE 2138-3336 is a s-process-rich star with [Fe/H] = -2.79, and has the highest [Pb/Fe] abundance ratio measured thus far, if non-local thermodynamic equilibrium corrections are included ([Pb/Fe] = +3.84). HE 2258-6358, with [Fe/H] = -2.67, exhibits enrichments in both s- and r-process elements. These stars were selected from a sample of candidate metal-poor stars from the Hamburg/ESO objective-prism survey, and followed up with medium-resolution (R {approx} 2000) spectroscopy with GEMINI/GMOS. We report here on derived abundances (or limits) for a total of 34 elements in each star, based on high-resolution (R {approx} 30, 000) spectroscopy obtained with Magellan-Clay/MIKE. Our results are compared to predictions from new theoretical asymptotic giant branch (AGB) nucleosynthesis models of 1.3 M{sub Sun} with [Fe/H] = -2.5 and -2.8, as well as to a set of AGB models of 1.0 to 6.0 M{sub Sun} at [Fe/H] = -2.3. The agreement with the model predictions suggests that the neutron-capture material in HE 2138-3336 originated from mass transfer from a binary companion star that previously went through the AGB phase, whereas for HE 2258-6358, an additional process has to be taken into account to explain its abundance pattern. We find that a narrow range of progenitor masses (1.0 {<=} M(M{sub Sun }) {<=} 1.3) and metallicities (-2.8 {<=} [Fe/H] {<=}-2.5) yield the best agreement with our observed elemental abundance patterns.

  7. Photometric and spectroscopic studies of massive binaries in the large Magellanic Cloud. II. Three O-type systems in the 30 Dor region

    SciTech Connect (OSTI)

    Morrell, Nidia I. [Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena (Chile); Massey, Philip; Neugent, Kathryn F. [Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, AZ 86001 (United States); Penny, Laura R. [Department of Physics and Astronomy, The College of Charleston, Charleston, SC 29424 (United States); Gies, Douglas R., E-mail: nmorrell@lco.cl, E-mail: phil.massey@lowell.edu, E-mail: kneugent@lowell.edu, E-mail: penny@cofc.edu, E-mail: gies@chara.gsu.edu [Center for High Angular Resolution Astronomy and Department of Physics and Astronomy, Georgia State University, P.O. Box 5060, Atlanta, GA 30302 (United States)

    2014-07-10

    This is the second paper in a series devoted to the study of massive binary systems in the Large Magellanic Cloud (LMC). We mainly aim to provide accurate data that constrains the mass-luminosity relation for the most massive stars but also to address the long lasting problem known as the 'mass discrepancy'. We present here our results for three binaries (LMC 169782, LMC 171520, and [P93] 921) harboring the earliest O-type components—ranging from O4 V to O6.5 V—among our sample of 17 systems. Our photometry provided accurate periods for the studied systems, allowing the spectroscopic observations to be performed at selected phases where the radial velocity separation between binary components is larger. Following the procedure outlined in our first paper of this series, after solving the radial velocity curves for orbital parameters, we used tomographic reconstruction to obtain the individual spectra of each star, from which we determined effective temperatures via a model atmosphere fitting with FASTWIND. This information, combined with the light-curve analysis that was performed with GENSYN, enabled the determination of absolute masses, radii, and bolometric luminosities that are compared with those predicted by modern stellar evolutionary models finding that they agree within the uncertainties. Nevertheless, the comparison seems to confirm the small differences found in the first paper of this series in the sense that the evolutionary masses are slightly larger than the Keplerian ones, with differences averaging ?10%, or alternatively, the stellar evolutionary models predict luminosities that are somewhat lower than observed. Still, the overall agreement between the current evolutionary models and the empirically determined stellar parameters is remarkable.

  8. Identification of a jet-driven supernova remnant in the Small Magellanic Cloud: Possible evidence for the enhancement of bipolar explosions at low metallicity

    SciTech Connect (OSTI)

    Lopez, Laura A.; Castro, Daniel [MIT-Kavli Institute for Astrophysics and Space Research, 77 Massachusetts Avenue, 37-664H, Cambridge, MA 02139 (United States); Slane, Patrick O. [Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138 (United States); Ramirez-Ruiz, Enrico [Department of Astronomy and Astrophysics, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95060 (United States); Badenes, Carles, E-mail: lopez@space.mit.edu [Department of Physics and Astronomy and Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT PACC), University of Pittsburgh, 3941 O'Hara St, Pittsburgh, PA 15260 (United States)

    2014-06-10

    Recent evidence has suggested that the supernova remnant (SNR) 0104–72.3 in the Small Magellanic Cloud (SMC) may be the result of a 'prompt' Type Ia SN on the basis of enhanced iron abundances and its association with a star-forming region. In this paper, we present evidence that SNR 0104–72.3 arose from a jet-driven bipolar core-collapse (CC) SN. Specifically, we use serendipitous Chandra data of SNR 0104–72.3 taken because of its proximity to the calibration source SNR E0102–72.3. We analyze 56 Advanced CCD Imaging Spectrometer (ACIS) observations of SNR 0104–72.3 to produce imaging and spectra with an effective exposure of 528.6 ks. We demonstrate that SNR 0104–72.3 is highly elliptical relative to other nearby young SNRs, suggesting a CC SN origin. Furthermore, we compare ejecta abundances derived from spectral fits to nucleosynthetic yields of Type Ia and CC SNe, and we find that the iron, neon, and silicon abundances are consistent with either a spherical CC SN of a 18-20 M {sub ?} progenitor or an aspherical CC SN of a 25 M {sub ?} progenitor. We show that the star formation history at the site of SNR 0104–72.3 is also consistent with a CC origin. Given the bipolar morphology of the SNR, we favor the aspherical CC SN scenario. This result may suggest jet-driven SNe occur frequently in the low-metallicity environment of the SMC, consistent with the observational and theoretical work on broad-line Type Ic SNe and long-duration gamma-ray bursts.

  9. Direction des ressources humaines Mission Insertion Handicap -procdure officielle -08/06/2015 fiche de poste pour le recrutement par la voie contractuelle

    E-Print Network [OSTI]

    van Tiggelen, Bart

    pérennisation de logiciels de pilotage des manipulations, réalisés pour l'essentiel sous environnement Matlab

  10. L'APPROCHE PAR LES COMPTENCES EN FORMATION De l'analyse des pratiques l'analyse de l'activit, vers

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    'activité, vers l'émergence d'une didactique des soins infirmiers Nathalie Alglave 1 , Marc Nagels 2 1 Université des formateurs, des étudiants et des tuteurs. Mots-clés Formation en soins infirmiers, didactique Questions de pédagogies dans l'enseignement supérieur, juin 2011. Université d'Angers 2 d'infirmier veut

  11. Cosmology from Cosmic Shear with DES Science Verification Data

    E-Print Network [OSTI]

    Abbott, T; Allam, S; Amara, A; Annis, J; Armstrong, R; Bacon, D; Banerji, M; Bauer, A H; Baxter, E; Becker, M R; Benoit-Lévy, A; Bernstein, R A; Bernstein, G M; Bertin, E; Blazek, J; Bonnett, C; Bridle, S L; Brooks, D; Bruderer, C; Buckley-Geer, E; Burke, D L; Busha, M T; Capozzi, D; Rosell, A Carnero; Kind, M Carrasco; Carretero, J; Castander, F J; Chang, C; Clampitt, J; Crocce, M; Cunha, C E; D'Andrea, C B; da Costa, L N; Das, R; DePoy, D L; Desai, S; Diehl, H T; Dietrich, J P; Dodelson, S; Doel, P; Drlica-Wagner, A; Efstathiou, G; Eifler, T F; Erickson, B; Estrada, J; Evrard, A E; Neto, A Fausti; Fernandez, E; Finley, D A; Flaugher, B; Fosalba, P; Friedrich, O; Frieman, J; Gangkofner, C; Garcia-Bellido, J; Gaztanaga, E; Gerdes, D W; Gruen, D; Gruendl, R A; Gutierrez, G; Hartley, W; Hirsch, M; Honscheid, K; Huff, E M; Jain, B; James, D J; Jarvis, M; Kacprzak, T; Kent, S; Kirk, D; Krause, E; Kravtsov, A; Kuehn, K; Kuropatkin, N; Kwan, J; Lahav, O; Leistedt, B; Li, T S; Lima, M; Lin, H; MacCrann, N; March, M; Marshall, J L; Martini, P; McMahon, R G; Melchior, P; Miller, C J; Miquel, R; Mohr, J J; Neilsen, E; Nichol, R C; Nicola, A; Nord, B; Ogando, R; Palmese, A; Peiris, H V; Plazas, A A; Refregier, A; Roe, N; Romer, A K; Roodman, A; Rowe, B; Rykoff, E S; Sabiu, C; Sadeh, I; Sako, M; Samuroff, S; Sánchez, C; Sanchez, E; Seo, H; Sevilla-Noarbe, I; Sheldon, E; Smith, R C; Soares-Santos, M; Sobreira, F; Suchyta, E; Swanson, M E C; Tarle, G; Thaler, J; Thomas, D; Troxel, M A; Vikram, V; Walker, A R; Wechsler, R H; Weller, J; Zhang, Y; Zuntz, J

    2015-01-01

    We present the first constraints on cosmology from the Dark Energy Survey (DES), using weak lensing measurements from the preliminary Science Verification (SV) data. We use 139 square degrees of SV data, which is less than 3\\% of the full DES survey area. Using cosmic shear 2-point measurements over three redshift bins we find $\\sigma_8 (\\Omega_{\\rm m}/0.3)^{0.5} = 0.81 \\pm 0.06$ (68\\% confidence), after marginalising over 7 systematics parameters and 3 other cosmological parameters. We examine the robustness of our results to the choice of data vector and systematics assumed, and find them to be stable. About $20$\\% of our error bar comes from marginalising over shear and photometric redshift calibration uncertainties. The current state-of-the-art cosmic shear measurements from CFHTLenS are mildly discrepant with the cosmological constraints from Planck CMB data; our results are consistent with both datasets. Our uncertainties are $\\sim$30\\% larger than those from CFHTLenS when we carry out a comparable anal...

  12. Lagos, Koolhaas and partisan politics in Nigeria1 Laurent Fourchard, Fondation nationale des sciences politiques,

    E-Print Network [OSTI]

    Boyer, Edmond

    Lagos, Koolhaas and partisan politics in Nigeria1 Laurent Fourchard, Fondation nationale des was the only state in Southwestern Nigeria in the hands of the opposition. Governor Bola Tinubu warmly thanked

  13. ED n432 : Sciences des Mtiers de l'Ingnieur pour obtenir le grade de

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    d'apporter des retouches finales à mon manuscrit. J'adresse mes remerciements à Mr Bertrand Pierre connaissances sur la préparation d'échantillons et l'observation en microscopie : Sonia Achard, Léa Awada

  14. Calendrier de Polytechnique Guide sur la synchronisation automatique des vnements avec Outlook et

    E-Print Network [OSTI]

    Meunier, Michel

    Calendrier de Polytechnique Guide sur la synchronisation automatique des événements avec Outlook et..............................................................................................................4 Ajouter le calendrier dans Outlook calendrier Outlook. Afin de vous assurer que votre calendrier se mettra automatiquement à jour lors de l

  15. Karlsruher Institut fr Technologie Universitt des Landes Baden-Wrttemberg und

    E-Print Network [OSTI]

    Stein, Oliver

    - schulen in Baden-Württemberg (Landeshochschulgesetz - LHG) in der Fassung vom 1. Januar 2005 (GBl. S. 1 f Honorarprofessoren des KIT gemäß § 55 LHG sowie leitende Wissenschaftler gemäß § 14 Abs. 3 KITG im

  16. Aufbau des Bachelorstudienganges BIOINFORMATIK an der FU Berlin Sem. Informatik Mathematik Chemie

    E-Print Network [OSTI]

    Ziegler, Günter M.

    Aufbau des Bachelorstudienganges BIOINFORMATIK an der FU Berlin Sem. Informatik Mathematik Chemie Biochemie Molekularbiologie Genetik Physiologie Weitere Fächer 1 Allg. Chemie (4+2) 6+4 cr 3 2 Wahlfächer

  17. Laboratoire de Physique des Plasmas Association EURATOM-ETAT BELuE

    E-Print Network [OSTI]

    Laboratoire de Physique des Plasmas Association EURATOM-ETAT BELuE Avenuede la Renaissance30 1000Bt) Aside from the fact that the decisions of the European Council arc only taken after very serious thought

  18. Communiqu de presse Fvrier 2013 Stphane Lagier nomm directeur gnral des services

    E-Print Network [OSTI]

    national d'Histoire naturelle Stéphane Lagier, 41 ans, a été nommé directeur général des services du Muséum 00 Estelle MERCERON ­ 01 40 79 54 40 presse@mnhn.fr #12;

  19. CONTRIBUTION A L'TUDE DES FLAMMES D'HYDROCARBURES. PROPANE ET ACTYLNE

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    CONTRIBUTION A L'ÉTUDE DES FLAMMES D'HYDROCARBURES. PROPANE ET ACÉTYLÈNE Par MM. JEAN VAN DER POLL du propane et de l'acétylène qui ont montré que, dans certains cas, les flammes oxy-propane et oxy

  20. LES RSID US EN PTE ET LA DPOSITION EN SURFAC E DES REJETS DE CONCENTRATEUR

    E-Print Network [OSTI]

    Aubertin, Michel

    potentiel de génération de drainage minier acide (DMA). Présentement, le stockage des rejets de environment, which reduces the potential for generation of acid mine #12;- 2 - drainage (AMD). Presently

  1. Direction gnrale des technologies de l'information et de la communication

    E-Print Network [OSTI]

    Charette, André

    Direction générale des technologies de l'information et de la communication Communiqué de presse technologies de l'information et de la ommunication (DGTIC) est heureuse d'annoncer le remplacement de

  2. AVEC L'ITII de LYON, L'EXCELLENCE DES INGENIEURS PAR L'ALTERNANCE

    E-Print Network [OSTI]

    Dellandréa, Emmanuel

    AVEC L'ITII de LYON, L'EXCELLENCE DES INGENIEURS PAR L'ALTERNANCE DEVENEZ ACTEUR DE VOTRE FORMATION diplômé de CENTRALE LYON, spécialité Energie, en partenariat avec l'Institut des Techniques d'Ingénieur de l'Industrie de Lyon" A QUI S'ADRESSER : Vous êtes candidat ? Pour vous inscrire Catherine PELOFI 04

  3. Section des Units de recherche Rapport de l'AERES sur

    E-Print Network [OSTI]

    Jeanjean, Louis

    Section des Unités de recherche Rapport de l'AERES sur l'unité : Laboratoire de Mathématiques de scientifique représentant de l'AERES : M. Gilbert LEVITT Représentant(s) des établissements et organismes'unité : (sur la base du dossier déposé à l'AERES) : Dans le bilan Dans le projet N1 : Nombre d

  4. Introduction JAVA Georges Linares IUP GMI Universit d'Avignon et des Pays de Vaucluse

    E-Print Network [OSTI]

    Linarès, Georges

    Introduction à JAVA Georges Linares ­ IUP GMI ­ Université d'Avignon et des Pays de Vaucluse Modélisation Objet #12;Introduction à JAVA Historique ­ Les langages objets Simula 67 (trop tôt) Smalltalk utilisé ... et JAVA Georges Linares ­ IUP GMI ­ Université d'Avignon et des Pays de Vaucluse #12

  5. Les enjeux principaux du projet taient de fournir des lments d'observations de tsunamis, et de proposer des estimations des impacts possibles sur les ctes franaises. L'approche a

    E-Print Network [OSTI]

    Nicolas, Chamot-Rooke

    Les enjeux principaux du projet étaient de fournir des éléments d'observations de tsunamis, et de française. Aléa tsunami pour les côtes françaises : bilan du projet ANR MAREMOTI (2009-2012) Hélène Hébert les tsunamis en France (projet ANR TSUMOD) et en Europe (projet FP6 TRANSFER) Le projet MAREMOTI

  6. Communiqu de presse 22 avril 2015 dition de la Fte de la Nature

    E-Print Network [OSTI]

    JARDIN DES PLANTES Sur les Grilles de l'Éole de Botanique : Littoral - 40 ans de merveilles préservées les jeunes de moins de 26 ans et les personnes en situation de handicap. Lieu : Jardin des Plantes Village de la Nature Tél : 01 40 79 56 01 / 54 79 Programme complet du week-end téléchargeable ci

  7. Energy Models for Drawing Signed Graphs Anne-Marie Kermarrec and Afshin Moin

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    by proposing a dual energy model for graphs containing uniquely negative edges, and combining it linearly

  8. et les mtadonnes CMIP5 Sieste Globc -Marie-Pierre Moine -2 dcembre 2010

    E-Print Network [OSTI]

    METAFOR et CMIP5 #12; Projet européen (EU-FP7) Initiative du European Network for Earth System Modelling (NOAA/NCAR/GFDL) CERA2 (MPI) BFG (Univ. Of Manchester) ESMF (Earth System Modeling Framework, NASA

  9. THE MASS-LOSS RETURN FROM EVOLVED STARS TO THE LARGE MAGELLANIC CLOUD. II. DUST PROPERTIES FOR OXYGEN-RICH ASYMPTOTIC GIANT BRANCH STARS

    SciTech Connect (OSTI)

    Sargent, Benjamin A.; Meixner, M.; Gordon, Karl D. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Srinivasan, S. [Institut d'Astrophysique de Paris, 98 bis, Boulevard Arago, Paris 75014 (France); Kemper, F.; Woods, Paul M. [Jodrell Bank Centre for Astrophysics, Alan Turing Building, School of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester, M13 9PL (United Kingdom); Tielens, A. G. G. M. [Leiden Observatory, P.O. Box 9513, NL-2300 RA Leiden (Netherlands); Speck, A. K. [Physics and Astronomy Department, University of Missouri, Columbia, MO 65211 (United States); Matsuura, M. [Institute of Origins, Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT (United Kingdom); Bernard, J.-Ph. [Centre d'Etude Spatiale des Rayonnements, 9 Av. du Colonel Roche, BP 44346, 31028 Toulouse Cedex 4 (France); Hony, S. [Laboratoire AIM, CEA/DSM-CNRS-Universite Paris Diderot DAPNIA/Service d'Astrophysique Bat. 709, CEA-Saclay F-91191 Gif-sur-Yvette Cedex (France); Indebetouw, R. [Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904 (United States); Marengo, M. [Department of Physics and Astronomy, Iowa State University, Ames, IA 50011 (United States); Sloan, G. C., E-mail: sargent@stsci.ed [Department of Astronomy, Cornell University, Ithaca, NY 14853 (United States)

    2010-06-10

    We model multi-wavelength broadband UBVIJHK{sub s} and Spitzer IRAC and MIPS photometry and Infrared Spectrograph spectra from the SAGE and SAGE-Spectroscopy observing programs of two oxygen-rich asymptotic giant branch (O-rich AGB) stars in the Large Magellanic Cloud (LMC) using radiative transfer (RT) models of dust shells around stars. We chose a star from each of the bright and faint O-rich AGB populations found by earlier studies of the SAGE sample in order to derive a baseline set of dust properties to be used in the construction of an extensive grid of RT models of the O-rich AGB stars found in the SAGE surveys. From the bright O-rich AGB population, we chose HV 5715, and from the faint O-rich AGB population we chose SSTISAGE1C J052206.92-715017.6 (SSTSAGE052206). We found the complex indices of refraction of oxygen-deficient silicates from Ossenkopf et al. and a power law with exponential decay grain size distribution like what Kim et al. used but with {gamma} of -3.5, a {sub min} of 0.01 {mu}m, and a {sub 0} of 0.1 {mu}m to be reasonable dust properties for these models. There is a slight indication that the dust around the faint O-rich AGB may be more silica-rich than that around the bright O-rich AGB. Simple models of gas emission suggest a relatively extended gas envelope for the faint O-rich AGB star modeled, consistent with the relatively large dust shell inner radius for the same model. Our models of the data require the luminosity of SSTSAGE052206 and HV 5715 to be {approx}5100 L {sub sun} and {approx}36,000 L {sub sun}, respectively. This, combined with the stellar effective temperatures of 3700 K and 3500 K, respectively, that we find best fit the optical and near-infrared data, suggests stellar masses of {approx}3 M {sub sun} and {approx}7 M {sub sun}. This, in turn, suggests that HV 5715 is undergoing hot-bottom burning and that SSTSAGE052206 is not. Our models of SSTSAGE052206 and HV 5715 require dust shells of inner radius {approx}17 and {approx}52 times the stellar radius, respectively, with dust temperatures there of 900 K and 430 K, respectively, and with optical depths at 10 {mu}m through the shells of 0.095 and 0.012, respectively. The models compute the dust mass-loss rates for the two stars to be 2.0 x 10{sup -9} M{sub sun} yr{sup -1} and 2.3 x 10{sup -9} M{sub sun} yr{sup -1}, respectively. When a dust-to-gas mass ratio of 0.002 is assumed for SSTSAGE052206 and HV 5715, the dust mass-loss rates imply total mass-loss rates of 1.0 x 10{sup -6} M{sub sun} yr{sup -1} and 1.2 x 10{sup -6} M{sub sun} yr{sup -1}, respectively. These properties of the dust shells and stars, as inferred from our models of the two stars, are found to be consistent with properties observed or assumed by detailed studies of other O-rich AGB stars in the LMC and elsewhere.

  10. DUST AND GAS IN THE MAGELLANIC CLOUDS FROM THE HERITAGE HERSCHEL KEY PROJECT. II. GAS-TO-DUST RATIO VARIATIONS ACROSS INTERSTELLAR MEDIUM PHASES

    SciTech Connect (OSTI)

    Roman-Duval, Julia; Gordon, Karl D.; Meixner, Margaret; Bot, Caroline; Bolatto, Alberto; Jameson, Katherine; Hughes, Annie; Hony, Sacha; Wong, Tony; Babler, Brian; Bernard, Jean-Philippe; Clayton, Geoffrey C.; Fukui, Yasuo; Galametz, Maud; Galliano, Frederic; Lebouteiller, Vianney; Lee, Min-Young; Israel, Frank; Li, Aigen; and others

    2014-12-20

    The spatial variations of the gas-to-dust ratio (GDR) provide constraints on the chemical evolution and lifecycle of dust in galaxies. We examine the relation between dust and gas at 10-50 pc resolution in the Large and Small Magellanic Clouds (LMC and SMC) based on Herschel far-infrared (FIR), H I 21 cm, CO, and H? observations. In the diffuse atomic interstellar medium (ISM), we derive the GDR as the slope of the dust-gas relation and find GDRs of 380{sub ?130}{sup +250} ± 3 in the LMC, and 1200{sub ?420}{sup +1600} ± 120 in the SMC, not including helium. The atomic-to-molecular transition is located at dust surface densities of 0.05 M {sub ?} pc{sup –2} in the LMC and 0.03 M {sub ?} pc{sup –2} in the SMC, corresponding to A {sub V} ? 0.4 and 0.2, respectively. We investigate the range of CO-to-H{sub 2} conversion factor to best account for all the molecular gas in the beam of the observations, and find upper limits on X {sub CO} to be 6 × 10{sup 20} cm{sup –2} K{sup –1} km{sup –1} s in the LMC (Z = 0.5 Z {sub ?}) at 15 pc resolution, and 4 × 10{sup 21} cm{sup –2} K{sup –1} km{sup –1} s in the SMC (Z = 0.2 Z {sub ?}) at 45 pc resolution. In the LMC, the slope of the dust-gas relation in the dense ISM is lower than in the diffuse ISM by a factor ?2, even after accounting for the effects of CO-dark H{sub 2} in the translucent envelopes of molecular clouds. Coagulation of dust grains and the subsequent dust emissivity increase in molecular clouds, and/or accretion of gas-phase metals onto dust grains, and the subsequent dust abundance (dust-to-gas ratio) increase in molecular clouds could explain the observations. In the SMC, variations in the dust-gas slope caused by coagulation or accretion are degenerate with the effects of CO-dark H{sub 2}. Within the expected 5-20 times Galactic X {sub CO} range, the dust-gas slope can be either constant or decrease by a factor of several across ISM phases. Further modeling and observations are required to break the degeneracy between dust grain coagulation, accretion, and CO-dark H{sub 2}. Our analysis demonstrates that obtaining robust ISM masses remains a non-trivial endeavor even in the local Universe using state-of-the-art maps of thermal dust emission.

  11. I. Formation de nouvelles crotes aux frontires divergentes (en expansion) La plupart des frontires de plaques sont immerges sous les mers et les trois-quarts des

    E-Print Network [OSTI]

    Miller, Scott

    à ces frontières de plaques permet à l'eau de mer froide d'y circuler. Ces eaux sont réchauffées par (figures 2, 3) se forme par solidification de la roche en fusion (magma) qui s'élève du manteau et qui-dessus des plaques plus froides et plus anciennes, donc plus profondes du fond marin. Le relief le long de la

  12. L'tude du mode de vie et de la culture des Imraguen rvle que le mulet jaune joue, aujourd'hui encore, malgr des volutions,

    E-Print Network [OSTI]

    ©IRD-H.Guillaume©S.Boulay ©S.Boulay Pêche au mulet Fishing for mullet Tikit Tikit Mulet jaune Flathead mullet Préparation du mulet Mullet preparation Séchage des filets de poisson Fish fillets being dried Transformation du poisson Fish processing ThestudyofthelifestyleandcultureoftheImraguenhasrevealed that

  13. Hermann Witekinds Christlich bedencken und die Entstehung des Faustbuchs von 1587 Herausgegeben von Frank Baron In Verbindung mit einer kritischen Edition des Textes von 1585 von Benedikt Sommer

    E-Print Network [OSTI]

    Baron, Frank

    2009-01-01

    Herausgegeben von Frank Baron In Verbindung mit einer kritischen Edition des Textes von 1585 von Benedikt Sommer Series: Studium Literarum 17 Publisher: Weidler Buchverlag Year: 2009... ---------------------------------------------------------------------------------------------------------------------------------- Table of Contents: Frank Baron, Einleitung (Introduction) I. Benedikt Sommer, Christlich bedencken und erjnnerung von Zauberey, kritische Edition II. Untersuchungen (Essays) Benedikt Sommer, Das Leben und Werk Hermann Witekinds Otto Ulbricht...

  14. TUDE DES LECTRONS ET DES RAIES X D'AUTOIONISATION MIS SIMULTANMENT AVEC LE RAYONNEMENT 03B2 DU PROMETHEUM 147

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    counters incoincidence, astudy has been made of the low energy photon and electron spectrum in 147Pm2 DU PROMETHEUM 147 Par F. SUZOR et G. CHARPAK, Laboratoire de Synthèse Atomique, C. N. R. S. Résumé'autoionisation du prometheum 147 l'intensité (3,2 ± 0,2) 10-4. Lespectre des électrons émis simultanément avec le

  15. In Fukushima htte das Schlimmste verhindert werden knnen. Wren nach der Havarie des Kernreaktors in Folge von Erdbeben und Tsunami bestimmte Ventile im Inneren des

    E-Print Network [OSTI]

    Stryk, Oskar von

    In Fukushima hätte das Schlimmste verhindert werden können. Wären nach der Havarie des Kernreaktors acht Aufgaben bewältigen, die an das Katastrophenszenario von Fukushima angelehnt sind: Zu Anfang in Fukushima zu simulieren. Ob der Roboter über das Trümmerfeld läuft oder es zunächst aus dem Weg räumt, ist

  16. PROGRAMMES DE PREMIER CYCLE EN SCIENCES DES RELIGIONS Le prsent guide nonce les exigences de base du baccalaurat en sciences des religions. Il

    E-Print Network [OSTI]

    Petriu, Emil M.

    l'année prochaine, et vice versa. Planifiez donc en conséquence. Le cours SRS4702 est un cours l'année prochaine, et vice versa. Planifiez donc en conséquence'Antiquité tardive SRS3163/CLA3163 Women in Early Christianity SRS3563/CLA3563 La femme dans le christianisme des

  17. Cosmic Shear Measurements with DES Science Verification Data

    SciTech Connect (OSTI)

    Becker, M. R.

    2015-07-20

    We present measurements of weak gravitational lensing cosmic shear two-point statistics using Dark Energy Survey Science Verification data. We demonstrate that our results are robust to the choice of shear measurement pipeline, either ngmix or im3shape, and robust to the choice of two-point statistic, including both real and Fourier-space statistics. Our results pass a suite of null tests including tests for B-mode contamination and direct tests for any dependence of the two-point functions on a set of 16 observing conditions and galaxy properties, such as seeing, airmass, galaxy color, galaxy magnitude, etc. We use a large suite of simulations to compute the covariance matrix of the cosmic shear measurements and assign statistical significance to our null tests. We find that our covariance matrix is consistent with the halo model prediction, indicating that it has the appropriate level of halo sample variance. We also compare the same jackknife procedure applied to the data and the simulations in order to search for additional sources of noise not captured by the simulations. We find no statistically significant extra sources of noise in the data. The overall detection significance with tomography for our highest source density catalog is 9.7?. Cosmological constraints from the measurements in this work are presented in a companion paper (DES et al. 2015).

  18. Lettre pigb-pmrc France -Changement global Consquences de l'rosionde la biodiversit sur le maintien des cosystmes

    E-Print Network [OSTI]

    Dintrans, Boris

    subissant pas de pollution locales) du département des Vosges. Les cours d'eau acidifiés (pH inférieur à 5 émissions atmosphériques : un outil pour la gestion de la qualité de l'air The spatialized emission inventories : a tool for the Air Quality Management II Figure 3 - Exemple de distributions horaires des

  19. Annuaire des Correspondants Europe Contactez les personnes de votre tablissement qui peuvent vous aider dans le montage de projets europens

    E-Print Network [OSTI]

    Bordenave, Charles

    Annuaire des Correspondants Europe Contactez les personnes de votre établissement qui peuvent vous Chargée de mission recherche (Cellule Europe) gaëlle.covo@ut-capitole.fr Céline Claustre Chargée de.sanchou@univ-tlse2.fr UT3 ­ Paul Sabatier Séverine Lor Responsable du bureau Europe (DGS, Service des relations

  20. Les Bons Ingredients pour un Haut Niveau de Performance des Installations Climatiques 

    E-Print Network [OSTI]

    Rougnon, J.

    2004-01-01

    ICEBO ? C ommiss 1 LES BONS INGREDIENTS POUR UN HAUT NIVEAU DE PERFORMANCE DES INSTALLATIONS CLIMATIQUES- Par Jean ROUGNON, Pr?sident de l?UCF ICEBO ? C ommiss 2 Une d?marche ?HAUT NIVEAU DE PERFORMANCE DES INSTALLATIONS CLIMATIQUES... = commissionnement !!! Un groupe de travail UCF cr?? pour donner une r?alit? concr?te au concept de commissionnement ICEBO ? C ommiss 3 Une r?gle /Un objectif Une R?gle : pour toutes installations,Performances ?nerg?tiques et qualit?s d?usage = valeurs reconnues...

  1. Influence de diffrents rgimes hydriques sur la croissance vgtative, le poids et la germination des

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    three water regimes either Water treatment, maintained continuously throughout plant life or modified plants. The heaviest seeds were generally produced on plants subjected to continuous or temporary water'aptitude germinative des graines étant fortement corrélée à leur poids. SUMMARY The effect of water regime on growth

  2. Bureau d'ORientation des tudiants trangers Accueillis Lyon 1 Bt. Astre (1

    E-Print Network [OSTI]

    Maume-Deschamps, Véronique

    Bureau d'ORientation des Étudiants étrangers Accueillis à Lyon 1 Bât. Astrée (1 er étage) ­ 43 Bd/ Site internet : http://boreal.univ-lyon1.fr Attention partir du 6 septembre 2012 : Mise en place Lyon Est UFR de Médecine et Maïeutique Lyon Sud Charles Mérieux UFR Odontologie Spécialités Médicales

  3. Dgradation et transformation d'un compost ptrolier apport des sols battants et effets sur

    E-Print Network [OSTI]

    Boyer, Edmond

    Dégradation et transformation d'un compost pétrolier apporté à des sols battants et effets sur devenir d'un compost pétrolier après incorporation dans le sol et à appré- cier sa valeur d'amendement. L'expérimentation a été effectuée au laboratoire sur 2 sols de texture limoneuse enrichis en compost selon une dose unique

  4. Application de la thorie des tas un systme d'aiguillage

    E-Print Network [OSTI]

    Boyer, Edmond

    Application de la théorie des tas à un système d'aiguillage Liza Mameri1 , Redouane Kara1 , Saïd Amari2 1. Laboratoire L2CSP, Université Mouloud Mammeri BP 17,Tizi-Ouzou,15000. Algerie liza.mameri'aiguillage proposé par [Mameri.L et al,2013] com- posé de deux wagonnets empruntant une voie commune représentée par

  5. pour obtenir le grade de Docteur de l'Universit des Antilles et de la Guyane

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . Néanmoins, des mercis spéciaux à Raphaël Achard le sauveur dégazeur, Philippe Tixier et Pierre Direction du CIRAD m'a également toujours soutenue ; merci en particulier à Jean-Pierre Gaillard, Jacky monde que nous espérons meilleurs : Pierre Beaujard, François Leclant, Daniel Barreteau... Heureusement

  6. Erste Satzung zur nderung der Prfungsordnung des Masterstudiengangs ,,Health Care Management" an der

    E-Print Network [OSTI]

    Greifswald, Ernst-Moritz-Arndt-Universität

    -Vorpommern (Landeshochschulgesetz - LHG M-V) vom 5. Juli 2002 (GVOBl. M-V S. 398)1 , zuletzt geändert durch das Gesetz vom 10. Juli. Februar 2007, der mit Beschluss des Senats vom 3. Mai 2006 gemäß §§ 81 Abs. 7 LHG und 20 Abs. 1 Satz 2 der

  7. Zweite Satzung zur nderung der Studienordnung des Masterstudiengangs ,,Health Care Management" an der

    E-Print Network [OSTI]

    Greifswald, Ernst-Moritz-Arndt-Universität

    -Vorpommern (Landeshochschulgesetz - LHG M-V) vom 5. Juli 2002 (GVOBl. M-V S. 398)1 , zuletzt geändert durch Artikel 19 des Geset LHG und 20 Abs. 1 Satz 2 der Grundordnung der Ernst-Moritz-Arndt-Universität Greifswald die Befugnis

  8. Erste Satzung zur nderung der Fachprfungsordnung des Masterstudiengangs Health Care Management

    E-Print Network [OSTI]

    Greifswald, Ernst-Moritz-Arndt-Universität

    -Vorpommern (Landeshochschulgesetz ­ LHG M- V) in der Fassung der Bekanntmachung vom 25. Januar 2011 (GVOBI. M-V S. 18), zuletzt der mit Beschluss des Senats vom 16. April 2014 gemäß §§ 81 Absatz 7 LHG M-V und 20 Absatz 1 Satz 2

  9. Universitt des Landes Baden-Wrttemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft

    E-Print Network [OSTI]

    Stein, Oliver

    -Württemberg (Landeshochschulgesetz - LHG) in der Fassung vom 1. Januar 2005 (GBl. S. 1 f), zuletzt geändert durch Artikel 2 des), beschlossen. Der Präsident hat seine Zustimmung gemäß § 20 Absatz 2 KITG iVm. § 34 Absatz 1 Satz 3 LHG am 07

  10. Universitt des Landes Baden-Wrttemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft

    E-Print Network [OSTI]

    Stein, Oliver

    -Württemberg (Landeshochschulgesetz - LHG) in der Fassung vom 1. Januar 2005 (GBl. S. 1 f), zuletzt geändert durch Artikel 2 des) beschlossen. Der Präsident hat seine Zustimmung gemäß § 20 Absatz 2 KITG iVm. § 34 Absatz 1 Satz 3 LHG am 07

  11. Section des Units de recherche Rapport de l'AERES sur

    E-Print Network [OSTI]

    Loday, Jean-Louis

    Section des Unités de recherche Rapport de l'AERES sur l'unité : Institut de Recherche Mathématique 2 #12;Représentants présents lors de la visite Délégué scientifique représentant de l'AERES : M

  12. Section des Units de recherche Rapport de l'AERES sur

    E-Print Network [OSTI]

    Avignon et des Pays de Vaucluse, Université de

    Section des Unités de recherche Rapport de l'AERES sur l'unité : Laboratoire d'Informatique d;4 Représentants présents lors de la visite Délégué scientifique représentant de l'AERES : Mme Jacqueline

  13. Module, Demokratiewissenschaft, 20.01.06 1. Name des Moduls: Kernmodul

    E-Print Network [OSTI]

    Schubart, Christoph

    Module, Demokratiewissenschaft, 20.01.06 DEM ­ M 30 1. Name des Moduls: Kernmodul 2. Fachgebiet, Diplom, Lehramt etc.) 6. Wie häufig wird das Modul angeboten? jedes Semester 7. In welcher Zeit kann das Modul absolviert werden? in zwei Semestern 8. Zusammensetzung: Nr. Veranstaltungen SWS LP

  14. A continuum description for a DES control problem Dieter Armbruster, Michael Herty and Christian Ringhofer

    E-Print Network [OSTI]

    Ringhofer, Christian

    is of the order of weeks. The production planning problem, i.e. to control the outflux of a factory, the push-pull point (PPP), along the production line. The paper showed that the heuristic PPP controlA continuum description for a DES control problem Dieter Armbruster, Michael Herty and Christian

  15. dition du colloque mtamorphose des Organisations 23 et 24 Novembre 2006 Nancy

    E-Print Network [OSTI]

    Boyer, Edmond

    la certification ISO 9000 est relativement peu étudié au regard des investissements financiers et conditions de mise en place de la certification ISO 9000 au sein de l'organisation. La question se pose alors certification et de son impact sur la performance de l'entreprise. Mots clés : Certification, ISO 9001

  16. Le Dcalogue Un guide pour les Franais qui veulent crire des articles

    E-Print Network [OSTI]

    sont beaucoup plus profondes que les simples règles de grammaire et d'orthographe. Elles touchent à l'architecture to estimate the weight. Peut être plutôt une erreur pour la langue parlée qu'écrite, mais si tu as des functions projects equally onto bases that are orthogonals, et tu ne dis pas the fire engines are reds. Et

  17. Universit d'Ottawa | University of Ottawa Facult des sciences de la sant

    E-Print Network [OSTI]

    Petriu, Emil M.

    Programme de formation des infirmières et infirmiers praticiens en soins de santé primaires (IP-SSP) En infirmiers praticiens (M.Sc. Sc.lnf./SSPIIP) · Diplôme en soins de santé primaires pour infirmières et infirmiers praticiens (SSPIIP) · Composantes majeures d'enseignement à distance #12;

  18. Facult des sciences infirmires Le Baccalaurat en sciences infirmires est offert selon divers par-

    E-Print Network [OSTI]

    Montréal, Université de

    titulaires d'un DEC en soins infirmiers, première composante du DEC- Baccalauréat intégré et à l'intention des infirmières et infirmiers en exercice. Le programme est offert selon deux modalités : temps plein destiné aux infirmières et infirmiers en exercice. Le parcours est constitué de trois étapes, les Mineures

  19. L'EVOLUTION DU DESIGN DES SYSTEMES DE PILOTAGE DE LA PERFORMANCE DANS LES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ) et, essentiellement, des systèmes de pilotage de la performance (SPP) en contexte hospitalier; (2) à of the management control systems and, mainly, performance monitoring systems in a hospital context; (2 in a conceptual contingent model allowing to understand how the management control systems of the hospital

  20. Polymers in poor solvents : loop expansion of irreducible diagrams (II) J. des Cloizeaux

    E-Print Network [OSTI]

    Boyer, Edmond

    761 Polymers in poor solvents : loop expansion of irreducible diagrams (II) J. des Cloizeaux polydispersion. Abstract. 2014 Properties of polymers in poor solvent are found by calculating irreducible. Expressions are given for the osmotic pressure, the size of a polymer in a solution and the density

  1. Catal Espaol English Canons i talussos profunds en els MARS Mediterrani i Cantbric: des de la

    E-Print Network [OSTI]

    Martin, Daniel

    Recursos Marins Renovables de l'Institut de Ciències del Mar del CSIC a Barcelona i el GRC d'estudi de les transferències de matèria i energia en l'oceà i en processos físics del fons marí, en biologia transferències de matèria i energia cap l'ecosistema profund. Des del punt de vista biològic, al Cantàbric es

  2. International Linear Collider Abbildung 86: Photo des TPC Feldkafigs, unmittelbar nach der Fertigstellung, im geoffne-

    E-Print Network [OSTI]

    International Linear Collider Abbildung 86: Photo des TPC Feldk¨afigs, unmittelbar nach der Fertigstellung, im ge¨offne- ten Zustand. 138 #12;International Linear Collider International Linear Collider ILC #12;International Linear Collider Die Entwicklung von Beschleuniger und Experiment ist eng miteinander

  3. Blackouts: des vrits qui drangent Prof. Damien Ernst Universit de Lige

    E-Print Network [OSTI]

    Ernst, Damien

    Blackouts: des vérités qui dérangent Prof. Damien Ernst ­ Université de Liège Novembre 2014 www un blackout. Cet hiver 2014-2015 en Belgique: Risque important que l'offre disponible soit inférieure à la demande. Mise en place de plans de délestage pour éviter le blackout total. #12;Mais comment

  4. Forschung an Lepton Collidern Abbildung 49: Perspektivische Ansicht des TESLA-Detektors.

    E-Print Network [OSTI]

    Forschung an Lepton Collidern Abbildung 49: Perspektivische Ansicht des TESLA-Detektors. 86 #12An- strengung vieler Gruppen und Institute der ,,Tech- nical Design Report" für TESLA veröffentlicht wer- den von TESLA, besonders in Bereichen, die im TDR nicht ausreichend behandelt werden konnten, und die

  5. Vulnrabilit des zones ctires face aux tsunamis, l'exemple d'Hispaniola.

    E-Print Network [OSTI]

    Grilli, Stéphan T.

    Vulnérabilité des zones côtières face aux tsunamis, l'exemple d'Hispaniola. Eric DAVID1-de-Paix, avaient déjà connu en 1842 un tremblement de terre d'une magnitude estimée Mw 7.6 à 8.1. Un tsunami destructeur l'avait accompagné. Le séisme et le tsunami ont fortement affecté la côte nord d'Hispaniola depuis

  6. DES13S2cmm: The first superluminous supernova from the dark energy survey

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Papadopoulos, A.; D'Andrea, C. B.; Sullivan, M.; Nichol, R. C.; Barbary, K.; Biswas, R.; Brown, P. J.; Covarrubias, R. A.; Finley, D. A.; Fischer, J. A.; et al

    2015-03-23

    We present DES13S2cmm, the first spectroscopically-confirmed superluminous supernova (SLSN) from the Dark Energy Survey (DES). We briefly discuss the data and search algorithm used to find this event in the first year of DES operations, and outline the spectroscopic data obtained from the European Southern Observatory (ESO) Very Large Telescope to confirm its redshift (z = 0.663 ± 0.001 based on the host-galaxy emission lines) and likely spectral type (type I). Using this redshift, we find MUpeak = -21.05???¹?-0.09 for the peak, rest-frame U-band absolute magnitude, and find DES13S2cmm to be located in a faint, low metallicity (sub-solar), low stellar-massmore »host galaxy (log(M/M_sun) = 9.3 ± 0.3); consistent with what is seen for other SLSNe-I. We compare the bolometric light curve of DES13S2cmm to fourteen similarly well-observed SLSNe-I in the literature and find it possesses one of the slowest declining tails (beyond +30 days rest frame past peak), and is the faintest at peak. Moreover, we find the bolometric light curves of all SLSNe-I studied herein possess a dispersion of only 0.2-0.3 magnitudes between +25 and +30 days after peak (rest frame) depending on redshift range studied; this could be important for 'standardising' such supernovae, as is done with the more common type Ia. We fit the bolometric light curve of DES13S2cmm with two competing models for SLSNe-I - the radioactive decay of ??Ni, and a magnetar - and find that while the magnetar is formally a better fit, neither model provides a compelling match to the data. Although we are unable to conclusively differentiate between these two physical models for this particular SLSN-I, further DES observations of more SLSNe-I should break this degeneracy, especially if the light curves of SLSNe-I can be observed beyond 100 days in the rest frame of the supernova.« less

  7. DES13S2cmm: The first superluminous supernova from the dark energy survey

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Papadopoulos, A. [Institute of Cosmology and Gravitation (ICG), Portsmouth (United Kingdom); D'Andrea, C. B.; Sullivan, M.; Nichol, R. C.; Barbary, K.; Biswas, R.; Brown, P. J.; Covarrubias, R. A.; Finley, D. A.; Fischer, J. A.; Foley, R. J.; Goldstein, D.; Gupta, R. R.; Kessler, R.; Kovacs, E.; Kuhlmann, S. E.; Lidman, C.; March, M.; Nugent, P. E.; Sako, M.; Smith, R. C.; Spinka, H.; Wester, W.; Abbott, T. M. C.; Abdalla, F.; Allam, S. S.; Banerji, M.; Bernstein, J. P.; Bernstein, R. A.; Carnero, A.; da Costa, L. N.; DePoy, D. L.; Desai, S.; Diehl, H. T.; Eifler, T.; Evrard, A. E.; Flaugher, B.; Frieman, J. A.; Gerdes, D.; Gruen, D.; Honscheid, K.; James, D.; Kuehn, K.; Kuropatkin, N.; Lahav, O.; Maia, M. A. G.; Makler, M.; Marshall, J. L.; Merritt, K. W.; Miller, C. J.; Miquel, R.; Ogando, R.; Plazas, A. A.; Roe, N. A.; Romer, A. K.; Rykoff, E.; Sanchez, E.; Santiago, B. X.; Scarpine, V.; Schubnell, M.; Sevilla, I.; Soares-Santos, M.; Suchyta, E.; Swanson, M.; Tarle, G.; Thaler, J.; Tucker, L. D.; Wechsler, R. H.; Zuntz, J.

    2015-03-20

    We present DES13S2cmm, the first spectroscopically-confirmed superluminous supernova (SLSN) from the Dark Energy Survey (DES). We briefly discuss the data and search algorithm used to find this event in the first year of DES operations, and outline the spectroscopic data obtained from the European Southern Observatory (ESO) Very Large Telescope to confirm its redshift (z = 0.663 ± 0.001 based on the host-galaxy emission lines) and likely spectral type (type I). Using this redshift, we find MUpeak = -21.05???¹?-0.09 for the peak, rest-frame U-band absolute magnitude, and find DES13S2cmm to be located in a faint, low metallicity (sub-solar), low stellar-mass host galaxy (log(M/M_sun) = 9.3 ± 0.3); consistent with what is seen for other SLSNe-I. We compare the bolometric light curve of DES13S2cmm to fourteen similarly well-observed SLSNe-I in the literature and find it possesses one of the slowest declining tails (beyond +30 days rest frame past peak), and is the faintest at peak. Moreover, we find the bolometric light curves of all SLSNe-I studied herein possess a dispersion of only 0.2-0.3 magnitudes between +25 and +30 days after peak (rest frame) depending on redshift range studied; this could be important for 'standardising' such supernovae, as is done with the more common type Ia. We fit the bolometric light curve of DES13S2cmm with two competing models for SLSNe-I - the radioactive decay of ??Ni, and a magnetar - and find that while the magnetar is formally a better fit, neither model provides a compelling match to the data. Although we are unable to conclusively differentiate between these two physical models for this particular SLSN-I, further DES observations of more SLSNe-I should break this degeneracy, especially if the light curves of SLSNe-I can be observed beyond 100 days in the rest frame of the supernova.

  8. DES13S2cmm: The first superluminous supernova from the Dark Energy Survey

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Papadopoulos, A.; Plazas, A. A.; D"Andrea, C. B.; Sullivan, M.; Nichol, R. C.; Barbary, K.; Biswas, R.; Brown, P. J.; Covarrubias, R. A.; Finley, D. A.; et al

    2015-03-20

    We present DES13S2cmm, the first spectroscopically-confirmed superluminous supernova (SLSN) from the Dark Energy Survey (DES). We briefly discuss the data and search algorithm used to find this event in the first year of DES operations, and outline the spectroscopic data obtained from the European Southern Observatory (ESO) Very Large Telescope to confirm its redshift (z = 0.663 ± 0.001 based on the host-galaxy emission lines) and likely spectral type (type I). Using this redshift, we find MpeakU = ?21.05+0.10?0.09 for the peak, rest-frame U-band absolute magnitude, and find DES13S2cmm to be located in a faint, low-metallicity (sub-solar), low stellar-mass hostmore »galaxy (log?(M/M?) = 9.3 ± 0.3), consistent with what is seen for other SLSNe-I. We compare the bolometric light curve of DES13S2cmm to fourteen similarly well-observed SLSNe-I in the literature and find it possesses one of the slowest declining tails (beyond +30 days rest frame past peak), and is the faintest at peak. Moreover, we find the bolometric light curves of all SLSNe-I studied herein possess a dispersion of only 0.2–0.3 magnitudes between +25 and +30 days after peak (rest frame) depending on redshift range studied; this could be important for ‘standardising’ such supernovae, as is done with the more common type Ia. We fit the bolometric light curve of DES13S2cmm with two competing models for SLSNe-I – the radioactive decay of ??Ni, and a magnetar – and find that while the magnetar is formally a better fit, neither model provides a compelling match to the data. Although we are unable to conclusively differentiate between these two physical models for this particular SLSN-I, further DES observations of more SLSNe-I should break this degeneracy, especially if the light curves of SLSNe-I can be observed beyond 100 d in the rest frame of the supernova.« less

  9. Magellan Adaptive Optics first-light observations of the exoplanet beta Pic b. II. 3-5 micron direct imaging with MagAO+Clio, and the empirical bolometric luminosity of a self-luminous giant planet

    E-Print Network [OSTI]

    Morzinski, Katie M; Skemer, Andy J; Close, Laird M; Hinz, Phil M; Rodigas, T J; Puglisi, Alfio; Esposito, Simone; Riccardi, Armando; Pinna, Enrico; Xompero, Marco; Briguglio, Runa; Bailey, Vanessa P; Follette, Katherine B; Kopon, Derek; Weinberger, Alycia J; Wu, Ya-Lin

    2015-01-01

    Young giant exoplanets are a unique laboratory for understanding cool, low-gravity atmospheres. A quintessential example is the massive extrasolar planet $\\beta$ Pic b, which is 9 AU from and embedded in the debris disk of the young nearby A6V star $\\beta$ Pictoris. We observed the system with first light of the Magellan Adaptive Optics (MagAO) system. In Paper I we presented the first CCD detection of this planet with MagAO+VisAO. Here we present four MagAO+Clio images of $\\beta$ Pic b at 3.1 $\\mu$m, 3.3 $\\mu$m, $L^\\prime$, and $M^\\prime$, including the first observation in the fundamental CH$_4$ band. To remove systematic errors from the spectral energy distribution (SED), we re-calibrate the literature photometry and combine it with our own data, for a total of 22 independent measurements at 16 passbands from 0.99--4.8 $\\mu$m. Atmosphere models demonstrate the planet is cloudy but are degenerate in effective temperature and radius. The measured SED now covers $>$80\\% of the planet's energy, so we approach ...

  10. Ethernet : des les au bureau, puis dans l'atelier Thierry DIVOUX, Eric RONDEAU, Jean-Philippe GEORGES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    retransmission (plus formel que « plus tard ») : algorithme du BEB (Binary Exponential Backoff). Ces travaux lui'algorithme BEB ainsi que la longueur des données, le medium physique (bus), ... Ethernet implémente une version 1

  11. Le CAS s'intresse au contrle des systmes de toute nature (mcanique, chimique, lectrique...). Le but est

    E-Print Network [OSTI]

    ); · Automobile (J. Lévine, P. Rouchon); · Contrôle des procédés (J. Lévine, N. Petit, P. Rouchon); · Machines capteur et iden- tification de moteurs asynchrones (Schneider Electric), rentrée dans l'atmosphère d

  12. CAHIER DE RECHERCHE : 2008-04 E1 Grer la mobilit professionnelle et l'adaptabilit : le cas des

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    infirmiers. RAPIAU Marie-Thérèse Unité Mixte de Recherche CNRS / Université Pierre Mendès France Grenoble 2 : Gérer la mobilité professionnelle et l'adaptabilité : le cas des infirmiers. Título : Gerenciar, mobilité professionnelle, compétences générales, infirmiers, mondialisation Palavras chave : gestão

  13. 000075 /Bonnet, Rpke, Scarpi 20.07.06 11:55 Du nom des images d'Isis polymorphe

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    000075 /Bonnet, Rpke, Scarpi 20.07.06 11:55 Du nom des images d'Isis polymorphe Laurent Bricault 1 Anciens et Modernes face aux images d'Isis L'e´volution la plus imme´diatement perceptible d'Isis dans l´e des sources grecques d'E´gypte ­ et d'ailleurs ­ jusqu'au milieu du IVe sie`cle av. J.-C., Isis

  14. 19`eme Congr`es Francais de Mecanique Marseille, 24-28 ao^ut 2009 Qu'est-ce qui determine la taille des dunes?

    E-Print Network [OSTI]

    Claudin, Philippe

    taille des dunes? M´ecanismes et lois d'´echelle. B. Andreotti, P. Claudin et A. Fourri`ere Laboratoire des rides aquatiques et des dunes ´eoliennes. Nous montrons qu'un lit plat est lin´eairement instable´edimentaire. Au-del`a du r´egime lin´eaire, les rides ou dunes interagissent et grossissent jusqu'`a une taille

  15. valuation AERES 15-17 janvier 2008 La valorisation des activits de recherche du GAME

    E-Print Network [OSTI]

    évaluation AERES 15-17 janvier 2008 1 La valorisation des activités de recherche du GAME 1. Les du RETIC #12;évaluation AERES 15-17 janvier 2008 2 1. Les différents aspects de la valorisation (1 les services opérationnels (écoute client) #12;évaluation AERES 15-17 janvier 2008 3 1. Les différents

  16. Annee 2013-2014 1`ere Securite des Syst`emes d'Information

    E-Print Network [OSTI]

    Dorbec, Paul

    `eme discr´etionnaire? 2 The Onion Router TOR (The onion router) est un r´eseau d'anonymisation des.2 (2pt) D'une part, les ´etats h´esitent `a interdire les r´eseaux anonymes tels que TOR, d'autres part´equents utilisateurs. Expliquez. TOR utilise le protocole suivant (ici simplifi´e): 1. L'´emetteur S utilise une liste

  17. La Maison de Salomon : La physique des particules a-t-elle fait de la vision de Francis Bacon une réalité?

    E-Print Network [OSTI]

    1996-01-01

    La Maison de Salomon : La physique des particules a-t-elle fait de la vision de Francis Bacon une réalité?

  18. Spécification pour une table de projection et d'étude des photographies provenant de la chambre à bulles de 2 metres à hydrogen liquide

    E-Print Network [OSTI]

    CERN. Geneva. TC-200

    1965-01-01

    Spécification pour une table de projection et d'étude des photographies provenant de la chambre à bulles de 2 metres à hydrogen liquide

  19. Mapping and simulating systematics due to spatially-varying observing conditions in DES Science Verification data

    E-Print Network [OSTI]

    Leistedt, B; Elsner, F; Benoit-Lévy, A; Amara, A; Bauer, A H; Becker, M R; Bonnett, C; Bruderer, C; Busha, M T; Kind, M Carrasco; Chang, C; Crocce, M; da Costa, L N; Gaztanaga, E; Huff, E M; Lahav, O; Palmese, A; Percival, W J; Refregier, A; Ross, A J; Rozo, E; Rykoff, E S; Sánchez, C; Sadeh, I; Sevilla-Noarbe, I; Sobreira, F; Suchyta, E; Swanson, M E C; Wechsler, R H; Abdalla, F B; Allam, S; Banerji, M; Bernstein, G M; Bernstein, R A; Bertin, E; Bridle, S L; Brooks, D; Buckley-Geer, E; Burke, D L; Capozzi, D; Rosell, A Carnero; Carretero, J; Cunha, C E; D'Andrea, C B; DePoy, D L; Desai, S; Diehl, H T; Doel, P; Eifler, T F; Evrard, A E; Neto, A Fausti; Flaugher, B; Fosalba, P; Frieman, J; Gerdes, D W; Gruen, D; Gruendl, R A; Gutierrez, G; Honscheid, K; James, D J; Jarvis, M; Kent, S; Kuehn, K; Kuropatkin, N; Li, T S; Lima, M; Maia, M A G; March, M; Marshall, J L; Martini, P; Melchior, P; Miller, C J; Miquel, R; Nichol, R C; Nord, B; Ogando, R; Plazas, A A; Reil, K; Romer, A K; Roodman, A; Sanchez, E; Santiago, B; Scarpine, V; Schubnell, M; Smith, R C; Soares-Santos, M; Tarle, G; Thaler, J; Thomas, D; Vikram, V; Walker, A R; Wester, W; Zhang, Y; Zuntz, J

    2015-01-01

    Spatially-varying depth and characteristics of observing conditions, such as seeing, airmass, or sky background, are major sources of systematic uncertainties in modern galaxy survey analyses, in particular in deep multi-epoch surveys. We present a framework to extract and project these sources of systematics onto the sky, and apply it to the Dark Energy Survey (DES) to map the observing conditions of the Science Verification (SV) data. The resulting distributions and maps of sources of systematics are used in several analyses of DES SV to perform detailed null tests with the data, and also to incorporate systematics in survey simulations. We illustrate the complementarity of these two approaches by comparing the SV data with the BCC-UFig, a synthetic sky catalogue generated by forward-modelling of the DES SV images. We analyse the BCC-UFig simulation to construct galaxy samples mimicking those used in SV galaxy clustering studies. We show that the spatially-varying survey depth imprinted in the observed gala...

  20. The redMaPPer Galaxy Cluster Catalog From DES Science Verification Data

    E-Print Network [OSTI]

    Rykoff, E S; Hollowood, D; Bermeo-Hernandez, A; Jeltema, T; Mayers, J; Romer, A K; Rooney, P; Saro, A; Cervantes, C Vergara; Wilcox, H; Abbott, T M C; Abdalla, F B; Allam, S; Annis, J; Benoit-Lévy, A; Bernstein, G M; Bertin, E; Brooks, D; Burke, D L; Capozzi, D; Rosell, A Carnero; Kind, M Carrasco; Castander, F J; Childress, M; Collins, C A; Cunha, C E; D'Andrea, C B; da Costa, L N; Davis, T M; Desai, S; Diehl, H T; Dietrich, J P; Doel, P; Evrard, A E; Finley, D A; Flaugher, B; Fosalba, P; Frieman, J; Glazebrook, K; Goldstein, D A; Gruen, D; Gruendl, R A; Gutierrez, G; Hilton, M; Honscheid, K; Hoyle, B; James, D J; Kay, S T; Kuehn, K; Kuropatkin, N; Lahav, O; Lewis, G F; Lidman, C; Lima, M; Maia, M A G; Mann, R G; Marshall, J L; Martini, P; Melchior, P; Miller, C J; Miquel, R; Mohr, J J; Nichol, R C; Nord, B; Ogando, R; Plazas, A A; Reil, K; Sahlén, M; Sanchez, E; Santiago, B; Scarpine, V; Schubnell, M; Sevilla-Noarbe, I; Smith, R C; Soares-Santos, M; Sobreira, F; Stott, J P; Suchyta, E; Swanson, M E C; Tarle, G; Thomas, D; Tucker, D; Viana, P T P; Vikram, V; Walker, A R; Zhang, Y

    2016-01-01

    We describe updates to the redMaPPer algorithm, a photometric red-sequence cluster finder specifically designed for large photometric surveys. The updated algorithm is applied to $150\\,\\mathrm{deg}^2$ of Science Verification (SV) data from the Dark Energy Survey (DES), and to the Sloan Digital Sky Survey (SDSS) DR8 photometric data set. The DES SV catalog is locally volume limited, and contains 786 clusters with richness $\\lambda>20$ (roughly equivalent to $M_{\\mathrm{500c}}\\gtrsim10^{14}\\,h_{70}^{-1}\\,M_{\\odot}$) and $0.2DES SV. We make use of \\emph{Chandra} and \\emph{XMM} X-ray and South Pole Telescope Sunyaev-Z...

  1. The LMC geometry and outer stellar populations from early DES data

    E-Print Network [OSTI]

    Balbinot, Eduardo; Girardi, L; Pieres, A; da Costa, L N; Maia, M A G; Walker, R A Gruendl A R; Yanny, B; Drlica-Wagner, A; Benoit-Levy, A; Abbott, T M C; Allam, S S; nnis, J A; Bernstein, J P; Bernstein, R A; Bertin, E; Brooks, D; Buckley-Geer, E; Rosell, A Carnero; Cunha, C E; DePoy, D L; Desai, S; Diehl, H T; Doel, P; Estrada, J; Evrard, A E; to, A Fausti Ne; Finley, D A; Flaugher, B; Frieman, J A; Gruen, D; Honscheid, K; James, D; Kuehn, K; Kuropatkin, N; Lahav, O; March, M; Marshall, J L; Miller, C; Ogando, R Miquel R; Peoples, J; Plazas, A; Scarpine, V; Schubnell, M; Sevilla-Noarbe, I; Smith, R C; Soares-Santos, M; Suchyta, E; Swanson, M E C; Tarle, G; Tucker, D L; Wechsler, R; Zuntz, J

    2015-01-01

    The Dark Energy Camera has captured a large set of images as part of Science Verification (SV) for the Dark Energy Survey. The SV footprint covers a lar ge portion of the outer Large Magellanic Cloud (LMC), providing photometry 1.5 magnitudes fainter than the main sequence turn-off of the oldest LMC stel lar population. We derive geometrical and structural parameters for various stellar populations in the LMC disk. For the distribution of all LMC stars, we find an inclination of $i=-38.14^{\\circ}\\pm0.08^{\\circ}$ (near side in the North) and a position angle for the line of nodes of $\\theta_0=129.51^{\\circ}\\pm0.17^{\\circ}$. We find that stars younger than $\\sim 4$ Gyr are more centrally concentrated than older stars. Fitting a projected exponential disk shows that the scale radius of the old populations is $R_{>4 Gyr}=1.41\\pm0.01$ kpc, while the younger population has $R_{projected exponent...

  2. Decision Models for Bulk Energy Transportation

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    Decision Models for Bulk Energy Transportation Networks James D. McCalley August 23, 2005 #12, and Electric Transportation Systems (1) What energy flow patterns would yield significantly improved energy (ISU - Randy Larabee) · City of Ames (Ames - Merlin Hove) · MidAmerican Energy (Des Moines - Alan O

  3. L`criture en sociologie : une question de mthode nglige1 Vincent Dubois

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    scripturales engagées dans le travail sociologique : ce que Pierre Achard appelle l`écriture intermédiaire chacune des problèmes au moins pour partie spécifiques. Achard Pierre, L`écriture intermédiaire dans le-Gallimard, 1989. Pour un aperçu général récent, cf. Lassave Pierre, Sciences sociales et littérature. Concurrence

  4. RSERVE DE LA HAUTE-TOUCHE Rintroduction de cistudes en Savoie

    E-Print Network [OSTI]

    150 et 200 individus. Au fil des ans, elle sera progressivement renforcée, gage, au-delà du seul enjeu) - gratuité : enfants de moins de 4 ans, personnes handicapées La visite s'effectue en voiture, puis à pied ou groupes scolaires ou aux adultes. RESERVE DE LA HAUTE-TOUCHE 36290 Obterre Tél : 02.54.02.20.40 www

  5. C o n t a c t Magali Brunet, Magali.Brunet@laas.fr

    E-Print Network [OSTI]

    Ingrand, François

    puissants et rapides. Ils offrent cependant beaucoup moins de réserve d'énergie que les batteries. L de 4 à 5 nanomètres de diamètre, constitués de feuillets de graphite concentriques rappelant ceux de'une batterie miniaturisée commerciale. Et ce, tout en gardant des densités d'énergie importantes, nécessaires à

  6. Food ProtectionTrends,Vol. 25, No. 12, Pages 981990 2005, International Association for Food Protection

    E-Print Network [OSTI]

    Food ProtectionTrends,Vol. 25, No. 12, Pages 981­990 Copyright© 2005, International Association for Food Protection 6200 Aurora Ave., Suite 200W, Des Moines, IA 50322-2864 Factors Impacting Food Workers' and Managers' Safe Food Preparation Practices: A Qualitative Study LAURA R. GREEN1* and CAROL SELMAN2 1 Health

  7. Une plate-forme en Midi-Pyrnes Par La rdaction -Publi le 30 janvier 2014 | L'Usine Nouvelle n 3362

    E-Print Network [OSTI]

    Bordenave, Charles

    ) cherchent à structurer une nouvelle plate-forme mutualisée dans le domaine des drones, à Toulouse. Le projet pourrait bénéficier d'un soutien du conseil régional, dans le cadre du nouveau plan Robotique et drones'un centre d'expérimentation dédié aux drones de moins de 150 kilos. "L'objectif est de se positionner comme

  8. PUBLICATIONS 2000 DANS DES REVUES A COMITE DE LECTURE * Ancey, C., F. Rapin, E. Martin, C. Colou, M. Naaim et G. Brunot, 2000

    E-Print Network [OSTI]

    Ribes, Aurélien

    PUBLICATIONS 2000 DANS DES REVUES A COMITE DE LECTURE * Ancey, C., F. Rapin, E. Martin, C. Coléou, M. Naaim et G. Brunot, 2000 : L'avalanche de Péclerey du 9 février 1999. La Houille Blanche, n° 5, pp 45-53. * Ayrault, F., et A. Joly, 2000 : Une nouvelle typologie des dépressions météorologiques

  9. La prise en compte des populations locales dans la mise en place d'aires protges : tudes de cas au Guatemala et au Maroc

    E-Print Network [OSTI]

    Vellend, Mark

    au Guatemala et au Maroc Par Vincens Côté essai présenté au Département de biologie pour l la gestion de deux aires protégées, l'une au Guatemala et l'autre au Maroc, et tente d'en dégager des Guatemala compte des aires protégées depuis 1955. Sa loi sur les aires protégées a été votée en 1989, et sa

  10. LA NUIT DES ETOILES AU PIC DU MIDI En concertation avec la direction de la rgie du Pic du Midi, nous proposons l'organisation

    E-Print Network [OSTI]

    Dintrans, Boris

    Titre LA NUIT DES ETOILES AU PIC DU MIDI Résumé En concertation avec la direction de la régie du Pic du Midi, nous proposons l'organisation de la nuit des étoiles au Pic du Midi au cours de laquelle étoiles Lieu Observatoire du Pic du Midi Région Midi-Pyrénées Date été 2009 Contact Sébastien VAUCLAIR

  11. SUR LA POSSIBILIT D'UTILISATION D'UNE CHAMBRE A BULLES A PROPANE POUR L'TUDE DES RACTIONS NUCLAIRES

    E-Print Network [OSTI]

    Boyer, Edmond

    175 A. SUR LA POSSIBILITÉ D'UTILISATION D'UNE CHAMBRE A BULLES A PROPANE POUR L'ÉTUDE DES RÉACTIONS. - Mise au point et étude des caractéristiques du fonctionnement d'une chambre à bulles à propane de 6 135 MeV. Abstract. 2014 Adjustment and studies of some characteristics of a 6 litre propane bubble

  12. Communication n 256-Atelier 21 : Formation au mtier du soin tude diachronique d'un processus de transmission des savoirs en soins travers

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    'Antiquité jusqu'à la construction du corps infirmier français en fin de XXe siècle. Hervé Carbuccia, cadre de portant sur la formation des infirmières et infirmiers au XXe siècle en France, le processus de en soins infirmiers en alternance fondée sur des curricula de plus en plus détaillés a permis au

  13. Contribution aux nombrables de la tradition Bon po : l'Appendive de bsTan 'dzin Rin chen rgyal mtshan a la Sphere de Cristal des Dieux et des Demons de Shar rdza rin po che

    E-Print Network [OSTI]

    Achard, Jean-Luc

    2003-01-01

    nombrables relèvent essentiellement de lapratique des Tantras Supérieurs (7e et 8e Véhicules), ainsi que du système dela Grande Perfection (rdzogs chen), même si une certaine part de ces nombra-bles se rencontre à l'évidence dans d’autres contextes, car leur... ’heure actuelle. Les choix effec-tués pour le présent article reflètent mes intérêts du moment mais leur sub-jectivité tient également à la nature cryptique de certains de ces nombrablesqui exigent des explications détaillées débordant du cadre du projet initial...

  14. The LMC geometry and outer stellar populations from early DES data

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Balbinot, Eduardo; Plazas, A.; Santiago, B. X.; Girardi, L.; Pieres, A.; da Costa, L. N.; Maia, M. A. G.; Gruendl, R. A.; Walker, A. R.; Yanny, B.; et al

    2015-03-20

    The Dark Energy Camera has captured a large set of images as part of Science Verification (SV) for the Dark Energy Survey. The SV footprint covers a large portion of the outer Large Magellanic Cloud (LMC), providing photometry 1.5 magnitudes fainter than the main sequence turn-off of the oldest LMC stellar population. We derive geometrical and structural parameters for various stellar populations in the LMC disc. For the distribution of all LMC stars, we find an inclination of i = –38.14°±0.08° (near side in the North) and a position angle for the line of nodes of ?? = 129.51°±0.17°. Wemore »find that stars younger than ~4 Gyr are more centrally concentrated than older stars. Fitting a projected exponential disc shows that the scale radius of the old populations is R>4Gyr = 1.41 ± 0.01 kpc, while the younger population has R= 0.72 ± 0.01 kpc. However, the spatial distribution of the younger population deviates significantly from the projected exponential disc model. The distribution of old stars suggests a large truncation radius of Rt = 13.5 ± 0.8 kpc. If this truncation is dominated by the tidal field of the Galaxy, we find that the LMC is ?24+9–6 times less massive than the encircled Galactic mass. By measuring the Red Clump peak magnitude and comparing with the best-fit LMC disc model, we find that the LMC disc is warped and thicker in the outer regions north of the LMC centre. As a result, our findings may either be interpreted as a warped and flared disc in the LMC outskirts, or as evidence of a spheroidal halo component.« less

  15. OzDES multifibre spectroscopy for the Dark Energy Survey: First-year operation and results

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Yuan, Fang; Plazas, A. A.; Lidman, C.; Davis, T. M.; Childress, M.; Abdalla, F. B.

    2015-07-29

    OzDES is a five-year, 100-night, spectroscopic survey on the Anglo-Australian Telescope, whose primary aim is to measure redshifts of approximately 2,500 Type Ia supernovae host galaxies over the redshift range 0.1 more »help calibrate photometric redshifts. Here we present an overview of the OzDES program and our first-year results. Between Dec 2012 and Dec 2013, we observed over 10,000 objects and measured more than 6,000 redshifts. Our strategy of retargeting faint objects across many observing runs has allowed us to measure redshifts for galaxies as faint as mr = 25 mag. We outline our target selection and observing strategy, quantify the redshift success rate for different types of targets, and discuss the implications for our main science goals. Finally, we highlight a few interesting objects as examples of the fortuitous yet not totally unexpected discoveries that can come from such a large spectroscopic survey.« less

  16. Galaxy bias from the DES Science Verification Data: combining galaxy density maps and weak lensing maps

    E-Print Network [OSTI]

    Chang, C; Gaztanaga, E; Amara, A; Refregier, A; Bacon, D; Becker, M R; Bonnett, C; Carretero, J; Castander, F J; Crocce, M; Fosalba, P; Giannantonio, T; Hartley, W; Jain, B; Jarvis, M; Kacprzak, T; Ross, A J; Sheldon, E; Troxel, M A; Vikram, V; Zuntz, J; Abbott, T M C; Abdalla, F B; Allam, S; Annis, J; Benoit-Levy, A; Bertin, E; Brooks, D; Buckley-Geer, E; Burke, D L; Capozzi, D; Rosell, A Carnero; Kind, M Carrasco; Cunha, C E; D'Andrea, C B; da Costa, L N; Desai, S; Diehl, H T; Dietrich, J P; Doel, P; Eifler, T F; Estrada, J; Evrard, A E; Flaugher, B; Frieman, J; Goldstein, D A; Gruen, D; Gruendl, R A; Gutierrez, G; Honscheid, K; James, D J; Kuehn, K; Kuropatkin, N; Lahav, O; Li, T S; Lima, M; Marshall, J L; Martini, P; Melchior, P; Miller, C J; Miquel, R; Mohr, J J; Nichol, R C; Nord, B; Ogando, R; Plazas, A A; Reil, K; Romer, A K; Roodman, A; Rykoff, E S; Sanchez, E; Scarpine, V; Schubnell, M; Sevilla-Noarbe, I; Smith, R C; Soares-Santos, M; Sobreira, F; Suchyta, E; Swanson, M E C; Tarle, G; Thomas, D; Walker, A R

    2016-01-01

    We measure the redshift evolution of galaxy bias from a magnitude-limited galaxy sample by combining the galaxy density maps and weak lensing shear maps for a $\\sim$116 deg$^{2}$ area of the Dark Energy Survey (DES) Science Verification data. This method was first developed in Amara et al. (2012) and later re-examined in a companion paper (Pujol et al., in prep) with rigorous simulation tests and analytical treatment of tomographic measurements. In this work we apply this method to the DES SV data and measure the galaxy bias for a magnitude-limited galaxy sample. We find the galaxy bias and 1$\\sigma$ error bars in 4 photometric redshift bins to be 1.33$\\pm$0.18 (z=0.2-0.4), 1.19$\\pm$0.23 (z=0.4-0.6), 0.99$\\pm$0.36 ( z=0.6-0.8), and 1.66$\\pm$0.56 (z=0.8-1.0). These measurements are consistent at the 1-2$\\sigma$ level with mea- surements on the same dataset using galaxy clustering and cross-correlation of galaxies with CMB lensing. In addition, our method provides the only $\\sigma_8$-independent constraint amon...

  17. Wide-Field Lensing Mass Maps from DES Science Verification Data

    E-Print Network [OSTI]

    Vikram, V; Jain, B; Bacon, D; Amara, A; Becker, M; Bernstein, G; Bonnett, C; Bridle, S; Brout, D; Busha, M; Frieman, J; Gaztanaga, E; Hartley, W; Jarvis, M; Kacprzak, T; Lahav, O; Leistedt, B; Lin, H; Melchior, P; Peiris, H; Rozo, E; Rykoff, E; Sanchez, C; Sheldon, E; Troxel, M; Wechsler, R; Zuntz, J; Abbott, T; Abdalla, F B; Armstrong, R; Banerji, M; Bauer, A H; Benoit-Levy, A; Bertin, E; Brooks, D; Buckley-Geer, E; Burke, D L; Capozzi, D; Rosell, A Carnero; Kind, M Carrasco; Castander, F J; Crocce, M; D'Andrea, C B; da Costa, L N; DePoy, D L; Desai, S; Diehl, H T; Dietrich, J P; Cunha, C E; Estrada, J; Evrard, A E; Neto, A Fausti; Fernandez, E; Flaugher, B; Fosalba, P; Gerdes, D; Gruen, D; Gruendl, R A; Honscheid, K; James, D; Kent, S; Kuehn, K; Kuropatkin, N; Li, T S; Maia, M A G; Makler, M; March, M; Marshall, J; Martini, Paul; Merritt, K W; Miller, C J; Miquel, R; Neilsen, E; Nichol, R C; Nord, B; Ogando, R; Plazas, A A; Romer, A K; Roodman, A; Sanchez, E; Scarpine, V; Sevilla, I; Smith, R C; Soares-Santos, M; Sobreira, F; Suchyta, E; Swanson, M E C; Tarle, G; Thaler, J; Thomas, D; Walker, A R; Weller, J

    2015-01-01

    Weak gravitational lensing allows one to reconstruct the spatial distribution of the projected mass density across the sky. These "mass maps" provide a powerful tool for studying cosmology as they probe both luminous and dark matter. In this paper, we present a weak lensing mass map reconstructed from shear measurements in a 139 deg^2 area from the Dark Energy Survey (DES) Science Verification (SV) data overlapping with the South Pole Telescope survey. We compare the distribution of mass with that of the foreground distribution of galaxies and clusters. The overdensities in the reconstructed map correlate well with the distribution of optically detected clusters. Cross-correlating the mass map with the foreground galaxies from the same DES SV data gives results consistent with mock catalogs that include the primary sources of statistical uncertainties in the galaxy, lensing, and photo-z catalogs. The statistical significance of the cross-correlation is at the 6.8 sigma level with 20 arcminute smoothing. A maj...

  18. Photometric redshifts and clustering of emission line galaxies selected jointly by DES and eBOSS

    E-Print Network [OSTI]

    Jouvel, S; Comparat, J; Carnero, A; Camacho, H; Abdalla, F B; Kneib, J-P; Merson, A; Lima, M; Sobreira, F; da Costa, Luiz; Prada, F; Zhu, G B; Benoit-Levy, A; De La Macora, A; Kuropatkin, N; Lin, H; Abbott, T M C; Allam, S; Banerji, M; Bertin, E; Brooks, D; Capozzi, D; Kind, M Carrasco; Carretero, J; Castander, F J; Cunha, C E; Desai, S; Doel, P; Eifler, T F; Estrada, J; Neto, A Fausti; Flaugher, B; Fosalba, P; Frieman, J; Gaztanaga, E; Gerdes, D W; Gruen, D; Gruendl, R A; Gutierrez, G; Honscheid, K; James, D J; Kuehn, K; Lahav, O; Li, T S; Maia, M A G; March, M; Marshall, J L; Miquel, R; Percival, W J; Plazas, A A; Reil, K; Romer, A K; Roodman, A; Rykoff, E S; Sako, M; Sanchez, E; Santiago, B; Scarpine, V; Sevilla-Noarbe, I; Santos, M Soares; Suchyta, E; Tarle, G; Thaler, J; Thomas, D; Walker, A; Zhang, Y

    2015-01-01

    We present the results of the first test plates of the extended Baryon Oscillation Spectroscopic Survey. This paper focuses on the emission line galaxies (ELG) population targetted from the Dark Energy Survey (DES) photometry. We analyse the success rate, efficiency, redshift distribution, and clustering properties of the targets. From the 9000 spectroscopic redshifts targetted, 4600 have been selected from the DES photometry. The total success rate for redshifts between 0.6 and 1.2 is 71\\% and 68\\% respectively for a bright and faint, on average more distant, samples including redshifts measured from a single strong emission line. We find a mean redshift of 0.8 and 0.87, with 15 and 13\\% of unknown redshifts respectively for the bright and faint samples. In the redshift range 0.6secure spectroscopic redshifts, the mean redshift for the bright and faint sample is 0.85 and 0.9 respectively. Star contamination is lower than 2\\%. We measure a galaxy bias averaged on scales of 1 and 10~...

  19. 1Rapportd'ActivitsISE,2007-2011 L'INSTITUT DES SCIENCES DE L'ENVIRONNEMENT

    E-Print Network [OSTI]

    Schibler, Ueli

    , ou encore la santé. L'enjeu est celui de la construction de passerelles entre l'environnement naturel recherche et développement), la participation à de nombreux autres projets financés par l'UE, comme COST Télévision Suisse Romande), de l'Index suisse de l'environnement, ou encore des cours de formation continue

  20. Erste Satzung zur nderung der Prfungs-und Studienordnung des Masterstudiengangs Biomathematik an der Ernst-Moritz-Arndt-Universitt

    E-Print Network [OSTI]

    Greifswald, Ernst-Moritz-Arndt-Universität

    -Vorpommern (Landeshochschulgesetz ­ LHG M-V) in der Fassung der Bekanntmachung vom 25. Januar 2011 (GVOBI. M-V S. 18), zuletzt-Moritz-Arndt-Universität Greifswald vom 10. Juni 2014, der mit Beschluss des Senats vom 16. April 2014 gemäß §§ 81 Absatz 7 LHG M

  1. Erste Satzung zur nderung der Prfungs-und Studienordnung des Masterstudiengangs Mathematik an der Ernst-Moritz-Arndt-Universitt

    E-Print Network [OSTI]

    Greifswald, Ernst-Moritz-Arndt-Universität

    -Vorpommern (Landeshochschulgesetz ­ LHG M-V) in der Fassung der Bekanntmachung vom 25. Januar 2011 (GVOBI. M-V S. 18), zuletzt-Moritz-Arndt-Universität Greifswald vom 10. Juni 2014, der mit Beschluss des Senats vom 16. April 2014 gemäß §§ 81 Absatz 7 LHG M

  2. INFLUENCE DE LA RECOMBINAISON RADIATIVE LECTRON-ION Cs+ SUR L'INTENSIT DES RAIES SPECTRALES DU CSIUM

    E-Print Network [OSTI]

    Boyer, Edmond

    514. INFLUENCE DE LA RECOMBINAISON RADIATIVE ÉLECTRON-ION Cs+ SUR L'INTENSITÉ DES RAIES SPECTRALES courbes obtenues et on montre l'influence du phénomène de recombinaison radiative sur cette variation. On en déduit une méthode de mesure du coefficient de recombinaison radiative total 03B1. Abstract. 2014

  3. Titre de l'atelier : Dynamiques conomiques des pays mditerranens Atelier du Laboratoire : Laboratoire LEAD -EA 3163

    E-Print Network [OSTI]

    Chamroukhi, Faicel

    Anh Duy NGUYEN, Université de Pau, France, CATT, « Remittance and Poverty: The Case of Vietnam Multidimensional Poverty in three South East Asian Countries » 12h30 Fin des travaux de l'atelier 12h30 Buffet ALAOUI, Université d'Auvergne, CERDI, « Decentralization, local resources and poverty in Morocco » 14h30

  4. Amliorer l'auto-efficacit collective des quipes de cadres formateurs en IFSI par la didactique professionnelle

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    formateurs de cinq instituts de formation en soins infirmiers (IFSI). En tant que système de croyances, évaluation des compétences, formation en soins infirmiers, compétence. hal-00565412,version1-12Feb2011 Manuscrit auteur, publié dans "Recherche en soins infirmiers, 104 (2011) 0" #12;2 La notion de compétence

  5. MEMS/NEMS Design Automation and Synthesis Annual Report for NSF Grant # CCR-DES/CC-0306557

    E-Print Network [OSTI]

    Agogino, Alice M.

    1 MEMS/NEMS Design Automation and Synthesis Annual Report for NSF Grant # CCR-DES/CC-0306557 (2004: The goal of the project is to extend the existing SUGAR MEMS simulator into a design synthesis tool that supports the early stages of MEMS/NEMS conceptual design. We are developing a broad base of MEMS building

  6. MEMS/NEMS Design Automation and Synthesis Annual Report for NSF Grant # CCR-DES/CC-0306557

    E-Print Network [OSTI]

    Agogino, Alice M.

    1 MEMS/NEMS Design Automation and Synthesis Annual Report for NSF Grant # CCR-DES/CC-0306557 (2005: The goal of the project is to extend the existing SUGAR MEMS simulator into a design synthesis tool that supports the early stages of MEMS/NEMS conceptual design. We are developing a broad base of MEMS building

  7. The Fusion Core Complex of the Peste des Petits Ruminants Virus Is a Six-Helix Bundle Assembly

    E-Print Network [OSTI]

    Srinivasan, N.

    The Fusion Core Complex of the Peste des Petits Ruminants Virus Is a Six-Helix Bundle Assembly (PPRV) fusion protein (F) to obtain insights into the mechanism by which these repeats influence PPRV-mediated cell fusion. Both HR1 and HR2 inhibit PPRV-mediated syncytia formation in Vero cells in vitro. Of these

  8. hierarchischer Beschreibungen, hierbei erfolgt eine Umsetzung des Hierarchie-Konzepts in Hardware mittels eines Handshake-Mechanismus.

    E-Print Network [OSTI]

    Ould Ahmedou, Mohameden

    6 hierarchischer Beschreibungen, hierbei erfolgt eine Umsetzung des Hierarchie-Konzepts in Hardware Entwurfsumgebung für die Umsetzung von C-Verhaltensspezi- fikationen in Hardware-Strukturen vorgestellt, sowie augenblicklichen Forschungsarbeiten liegen im Bereich Hardware/Software- Codesign in der Bereitstellung von

  9. International Linear Collider Abbildung 66: Drei-dimensionale Zeichnung des LDC Large Detector Concept, das mit we-

    E-Print Network [OSTI]

    International Linear Collider Abbildung 66: Drei-dimensionale Zeichnung des LDC Large Detector weitere Kalorimeter (BeamCal und LumiCal). 134 #12;International Linear Collider International Linear Entwicklung f¨ur den e+e- International Linear Collider (ILC). Weltweit waren die Aktivit¨aten f¨ur den

  10. Joan Sol Reconstitution de l'tat d'un micro drone par fusion de donnes TABLE DES MATIRES

    E-Print Network [OSTI]

    Solà, Joan

    Joan Solà Reconstitution de l'état d'un micro drone par fusion de données 1 TABLE DES MATIÈRES PRÉSENTATION ____________________________________________________3 LE PROJET MICRO DRONE.1.1 Le domaine de vol du micro drone _________________________________________8 2.1.2 La référence NED

  11. Introduction Algebras K Superficial webs Characterisation Perspectives Sur l'homologie sl3 des enchev^etrements ; alg`ebres

    E-Print Network [OSTI]

    Franchi, Jacques

    Introduction Algebras K Superficial webs Characterisation Perspectives Sur l'homologie sl3 des Blanchet Louis-Hadrien Robert Alg`ebre de Khovanov ­ Kuperberg #12;Introduction Algebras K Superficial webs Characterisation Perspectives 1 Introduction 2 The Khovanov ­ Kuperberg algebras 3 Superficial webs 4

  12. Annuaire des Correspondants Europe Contactez les personnes de votre tablissement qui peuvent vous aider dans le montage de projets europens

    E-Print Network [OSTI]

    Bordenave, Charles

    Annuaire des Correspondants Europe Contactez les personnes de votre établissement qui peuvent vous ­ Capitole Gaëlle Covo Chargée de mission recherche (Cellule Europe) gaëlle.covo@ut-capitole.fr Céline) valerie.sanchou@univ-tlse2.fr UT3 ­ Paul Sabatier Séverine Lor Responsable du bureau Europe (DGS, Service

  13. Wide-Field Lensing Mass Maps from DES Science Verification Data

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Chang, C.; Vikram, V.; Jain, B.

    2015-07-29

    We present a mass map reconstructed from weak gravitational lensing shear measurements over 139 deg2 from the Dark Energy Survey (DES) Science Verification data. The mass map probes both luminous and dark matter, thus providing a tool for studying cosmology. We find good agreement between the mass map and the distribution of massive galaxy clusters identified using a red-sequence cluster finder. Potential candidates for super-clusters and voids are identified using these maps. We measure the cross-correlation between the mass map and a magnitude-limited foreground galaxy sample and find a detection at the 6.8? level with 20 arcminute smoothing. These measurementsmore »are consistent with simulated galaxy catalogs based on ?CDM Nbody simulations, suggesting low systematics uncertainties in the map. We summarize our key findings in this letter; the detailed methodology and tests for systematics are presented in a companion paper.« less

  14. Wide-Field Lensing Mass Maps from DES Science Verification Data

    E-Print Network [OSTI]

    Chang, C; Jain, B; Bacon, D; Amara, A; Becker, M R; Bernstein, G; Bonnett, C; Bridle, S; Brout, D; Busha, M; Frieman, J; Gaztanaga, E; Hartley, W; Jarvis, M; Kacprzak, T; Kovacs, A; Lahav, O; Lin, H; Melchior, P; Peiris, H; Rozo, E; Rykoff, E; Sanchez, C; Sheldon, E; Troxel, M A; Wechsler, R; Zuntz, J; Abbott, T; Abdalla, F B; Allam, S; Annis, J; Bauer, A H; Benoit-Levy, A; Brooks, D; Buckley-Geer, E; Burke, D L; Capozzi, D; Rosell, A Carnero; Kind, M Carrasco; Castander, F J; Crocce, M; D'Andrea, C B; Desai, S; Diehl, H T; Dietrich, J P; Doel, P; Eifler, T F; Evrard, A E; Neto, A Fausti; Flaugher, B; Fosalba, P; Gruen, D; Gruendl, R A; Gutierrez, G; Honscheid, K; James, D; Kent, S; Kuehn, K; Kuropatkin, N; Maia, M A G; March, M; Martini, P; Merritt, K W; Miller, C J; Miquel, R; Neilsen, E; Nichol, R C; Ogando, R; Plazas, A A; Romer, A K; Roodman, A; Sako, M; Sanchez, E; Sevilla, I; Smith, R C; Soares-Santos, M; Sobreira, F; Suchyta, E; Tarle, G; Thaler, J; Thomas, D; Tucker, D; Walker, A R

    2015-01-01

    We present a mass map reconstructed from weak gravitational lensing shear measurements over 139 sq. deg from the Dark Energy Survey (DES) Science Verification data. The mass map probes both luminous and dark matter, thus providing a tool for studying cosmology. We find good agreement between the mass map and the distribution of massive galaxy clusters identified using a red-sequence cluster finder. Potential candidates for super-clusters and voids are identified using these maps. We measure the cross-correlation between the mass map and a magnitude-limited foreground galaxy sample and find a detection at the 5-7 sigma level on a large range of scales. These measurements are consistent with simulated galaxy catalogs based on LCDM N-body simulations, suggesting low systematics uncertainties in the map. We summarize our key findings in this letter; the detailed methodology and tests for systematics are presented in a companion paper.

  15. Magellan Info Session Professor Shahrokh Valaee

    E-Print Network [OSTI]

    Generation ECE422 ­ Radio and Microwave Wireless Systems ECE463 ­ Electric Drives ECE514 ­ Power Electronics Department of Electrical and Computer Engineering September 24, 2014 #12;Outline Undergraduate Office to Electronic Devices ECE318 ­ Fundamentals of Optics ECE442 ­ Intro to Micro- and Nano-Fabrication Technologies

  16. The Magellan Final Report on Cloud Computing

    E-Print Network [OSTI]

    Coghlan, Susan

    2013-01-01

    4.3.1 Cloud Computing Attractive Features . 4.3.2A berkeley view of cloud computing. Technical Report UCB/matching computations on cloud computing platforms and hpc

  17. The Magellan Final Report on Cloud Computing

    E-Print Network [OSTI]

    Coghlan, Susan

    2013-01-01

    of computer security are evolving for cloud computingcomputer forensic space a way to integrate their tools with the cloudthe cloud business model. In addition to answering computer

  18. Magellan: experiences from a Science Cloud

    E-Print Network [OSTI]

    Ramakrishnan, Lavanya

    2013-01-01

    the security implications of user-controlled cloud images?key security practices and policies on private clouds, suchand security poli- cies will remain, and sites moving to cloud

  19. The Magellan Final Report on Cloud Computing

    E-Print Network [OSTI]

    Coghlan, Susan

    2013-01-01

    their research efforts in cloud security. Experiences andinvolving cloud resources and security guidance is thedynamic nature of cloud systems, the security controls must

  20. Magellan Tackles the Mysterious Proton Spin

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    of NERSC, ACLF and ESnet to run on the cloud. From this work we learned that scientific cloud computing is more than just about processing data. It's a whole environment that...

  1. The Magellan Final Report on Cloud Computing

    E-Print Network [OSTI]

    Coghlan, Susan

    2013-01-01

    framework for high-performance computing systems. In IEEEAnalysis of High Performance Computing Applications on theon UnConventional high performance computing workshop plus

  2. The Magellan Final Report on Cloud Computing

    E-Print Network [OSTI]

    Coghlan, Susan

    2013-01-01

    Software Stacks 6.1 Eucalyptus . . . . . . . . 6.2 OpenStackT. Zbiegiel, “Experiences with eucalyptus: deploying an openTutorial, July 2011. 6. Eucalyptus Tutorial, Iwona Sakrejda,

  3. Magellan: experiences from a Science Cloud

    E-Print Network [OSTI]

    Ramakrishnan, Lavanya

    2013-01-01

    model and tools such as Eucalyptus and Hadoop, require us tovirtualization software such as Eucalyptus, Open- Stack, anda Service” or HaaS) and Eucalyptus, enabling users to port

  4. The Magellan Final Report on Cloud Computing

    E-Print Network [OSTI]

    Coghlan, Susan

    2013-01-01

    workflows, data, cyber-security, and others. FurtherDOE HPC science? Can DOE cyber security requirements be metDOE HPC science? Can DOE cyber security requirements be met

  5. Magellan: experiences from a Science Cloud

    E-Print Network [OSTI]

    Ramakrishnan, Lavanya

    2013-01-01

    2010. From Clusters To Clouds: xCAT 2 Is Out Of The Bag.Cost of Doing Science on the Cloud: The Montage Example. Incost of doing science on the cloud: the montage example. In

  6. Les dterminants du prix du carbone sur le march europen des quotas Carbon price drivers in the EU Emissions Trading Scheme

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    in the EU Emissions Trading Scheme Emilie Alberola1 et Julien Chevallier2 Résumé: L'article examine le prix des quotas durant la première période (2005-2007) de l'European Union Emissions Trading Scheme (EU

  7. OzDES multi-fibre spectroscopy for the Dark Energy Survey: first-year operation and results

    E-Print Network [OSTI]

    Yuan, Fang; Davis, T M; Childress, M; Abdalla, F B; Banerji, M; Buckley-Geer, E; Rosell, A Carnero; Carollo, D; Castander, F J; D'Andrea, C B; Diehl, H T; Cunha, C E; Foley, R J; Frieman, J; Glazebrook, K; Gschwend, J; Hinton, S; Jouvel, S; Kessler, R; Kim, A G; King, A L; Kuehn, K; Kuhlmann, S; Lewis, G F; Lin, H; Martini, P; McMahon, R G; Mould, J; Nichol, R C; Norris, R P; O'Neill, C R; Ostrovski, F; Papadopoulos, A; Parkinson, D; Reed, S; Romer, A K; Rooney, P J; Rozo, E; Rykoff, E S; Sako, M; Scalzo, R; Schmidt, B P; Scolnic, D; Seymour, N; Sharp, R; Sobreira, F; Sullivan, M; Thomas, R C; Tucker, D; Uddin, S A; Wechsler, R H; Wester, W; Wilcox, H; Zhang, B; Abbott, T; Allam, S; Bauer, A H; Benoit-Levy, A; Bertin, E; Brooks, D; Burke, D L; Kind, M Carrasco; Covarrubias, R; Crocce, M; da Costa, L N; DePoy, D L; Desai, S; Doel, P; Eifler, T F; Evrard, A E; Neto, A Fausti; Flaugher, B; Fosalba, P; Gaztanaga, E; Gerdes, D; Gruen, D; Gruendl, R A; Honscheid, K; James, D; Kuropatkin, N; Lahav, O; Li, T S; Maia, M A G; Makler, M; Marshall, J; Miller, C J; Miquel, R; Ogando, R; Plazas, A A; Roodman, A; Sanchez, E; Scarpine, V; Schubnell, M; Sevilla-Noarbe, I; Smith, R C; Soares-Santos, M; Suchyta, E; Swanson, M E C; Tarle, G; Thaler, J; Walker, A R

    2015-01-01

    OzDES is a five-year, 100-night, spectroscopic survey on the Anglo-Australian Telescope, whose primary aim is to measure redshifts of approximately 2,500 Type Ia supernovae host galaxies over the redshift range 0.1 Energy Survey for which we are also targeting cluster galaxies, radio galaxies, strong lenses, and unidentified transients, as well as measuring luminous red galaxies and emission line galaxies to help calibrate photometric redshifts. Here we present an overview of the OzDES program and our first-year results. Between Dec 2012 and Dec 2013, we observed over 10,000 objects and measured more than 6,000 redshifts. Our strategy of retargeting faint objects across many observing runs has allowed us to measure redshifts for galaxies as faint as m_r=25 mag. We outline ...

  8. DES J0454$-$4448: Discovery of the First Luminous z $\\ge$ 6 Quasar from the Dark Energy Survey

    E-Print Network [OSTI]

    Reed, S L; Banerji, M; Becker, G D; Gonzalez-Solares, E; Martini, P; Ostrovski, F; Rauch, M; Abbott, T; Abdalla, F B; Allam, S; Benoit-Levy, A; Bertin, E; Buckley-Geer, E; Burke, D; Rosell, A Carnero; da Costa, L N; ?Andrea, C; DePoy, D L; Desai, S; Diehl, H T; Doel, P; Cunha, C E; Estrada, J; Evrard, A E; Neto, A Fausti; Finley, D A; Fosalba, P; Frieman, J; Gruen, D; Honscheid, K; James, D; Kent, S; Kuehn, K; Kuropatkin, N; Lahav, O; Maia, M A G; Makler, M; Marshall, J; Merritt, K; Miquel, R; Mohr, J; Nord, B; Ogando, R; Plazas, A; Romer, K; Roodman, A; Rykoff, E; Sako, M; Sanchez, E; Santiago, B; Schubnell, M; Sevilla, I; Smith, C; Soares-Santos, M; Suchyta, E; Swanson, M E C; Tarle, G; Thomas, D; Tucker, D; Walker, A; Wechsler, R H

    2015-01-01

    We present the first results of a survey for high redshift, z $\\ge$ 6, quasars using izY multi-colour photometric observations from the Dark Energy Survey (DES). Here we report the discovery and spectroscopic confirmation of the $\\rm z_{AB}, Y_{AB}$ = 20.2, 20.2 (M$_{1450}$ = $-$26.5) quasar DES J0454$-$4448 with an emission line redshift of z = 6.10$\\pm$0.03 and a HI near zone size of 4.6 $\\pm$ 1.7 Mpc.The quasar was selected as an i-band drop out with i$-$z = 2.46 and z$_{AB} $ 50-100 new quasars with z $>$ 6 including 3-10 with z $>$ 7 dramatically increasing the numbers of quasars currently known that are suitable for detailed studies including determination of the neutral HI fraction of the intergalactic medium (IGM) during the epoch of Hydrogen reionization.

  9. redMaGiC: Selecting Luminous Red Galaxies from the DES Science Verification Data

    E-Print Network [OSTI]

    Rozo, E; Abate, A; Bonnett, C; Crocce, M; Davis, C; Hoyle, B; Leistedt, B; Peiris, H V; Wechsler, R H; Abbott, T; Abdalla, F B; Banerji, M; Bauer, A H; Benoit-Lévy, A; Bernstein, G M; Bertin, E; Brooks, D; Buckley-Geer, E; Burke, D L; Capozzi, D; Rosell, A Carnero; Carollo, D; Kind, M Carrasco; Carretero, J; Castander, F J; Childress, M J; Cunha, C E; D'Andrea, C B; Davis, T; DePoy, D L; Desai, S; Diehl, H T; Dietrich, J P; Doel, P; Eifler, T F; Evrard, A E; Neto, A Fausti; Flaugher, B; Fosalba, P; Frieman, J; Gaztanaga, E; Gerdes, D W; Glazebrook, K; Gruen, D; Gruendl, R A; Honscheid, K; James, D J; Jarvis, M; Kim, A G; Kuehn, K; Kuropatkin, N; Lahav, O; Lidman, C; Lima, M; Maia, M A G; March, M; Martini, P; Melchior, P; Miller, C J; Miquel, R; Mohr, J J; Nichol, R C; Nord, B; O'Neill, C R; Ogando, R; Plazas, A A; Romer, A K; Roodman, A; Sako, M; Sanchez, E; Santiago, B; Schubnell, M; Sevilla-Noarbe, I; Smith, R C; Soares-Santos, M; Sobreira, F; Suchyta, E; Swanson, M E C; Thaler, J; Thomas, D; Uddin, S; Vikram, V; Walker, A R; Wester, W; Zhang, Y; da Costa, L N

    2015-01-01

    We introduce redMaGiC, an automated algorithm for selecting Luminous Red Galaxies (LRGs). The algorithm was specifically developed to minimize photometric redshift uncertainties in photometric large-scale structure studies. redMaGiC achieves this by self-training the color-cuts necessary to produce a luminosity-thresholded LRG sample of constant comoving density. We demonstrate that redMaGiC photozs are very nearly as accurate as the best machine-learning based methods, yet they require minimal spectroscopic training, do not suffer from extrapolation biases, and are very nearly Gaussian. We apply our algorithm to Dark Energy Survey (DES) Science Verification (SV) data to produce a redMaGiC catalog sampling the redshift range $z\\in[0.2,0.8]$. Our fiducial sample has a comoving space density of $10^{-3}\\ (h^{-1} Mpc)^{-3}$, and a median photoz bias ($z_{spec}-z_{photo}$) and scatter $(\\sigma_z/(1+z))$ of 0.005 and 0.017 respectively. The corresponding $5\\sigma$ outlier fraction is 1.4%. We also test our algorit...

  10. Le Camp Massawippi du Centre de radaptation MAB-Mackay est un camp de vacances bilingue qui reoit des campeurs gs entre 6 et 30 ans, qui vivent avec une dficience motrice, auditive, ou visuelle. Le Camp est situ

    E-Print Network [OSTI]

    'équipe de soins infirmiers; Établir les normes et procédures pour le déroulement des activités d'urgence et Langue de travail : Bilingue : Français et Anglais Exigences : Diplôme d'études en soins infirmiers complété; Membre de l'Ordre des infirmiers et infirmières du Québec (OIIQ); Excellent en communication et

  11. Galaxy Clustering, Photometric Redshifts and Diagnosis of Systematics in the DES Science Verification Data

    SciTech Connect (OSTI)

    Crocce, M.

    2015-12-09

    We study the clustering of galaxies detected at i < 22.5 in the Science Verification observations of the Dark Energy Survey (DES). Two-point correlation functions are measured using 2.3 × 106 galaxies over a contiguous 116 deg2 region in five bins of photometric redshift width ?z = 0.2 in the range 0.2 < z < 1.2. The impact of photometric redshift errors is assessed by comparing results using a template-based photo-zalgorithm (BPZ) to a machine-learning algorithm (TPZ). A companion paper presents maps of several observational variables (e.g. seeing, sky brightness) which could modulate the galaxy density. Here we characterize and mitigate systematic errors on the measured clustering which arise from these observational variables, in addition to others such as Galactic dust and stellar contamination. After correcting for systematic effects, we then measure galaxy bias over a broad range of linear scales relative to mass clustering predicted from the Planck ? cold dark matter model, finding agreement with the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS) measurements with ?2 of 4.0 (8.7) with 5 degrees of freedom for the TPZ (BPZ) redshifts. Furthermore, we test a ‘linear bias’ model, in which the galaxy clustering is a fixed multiple of the predicted non-linear dark matter clustering. The precision of the data allows us to determine that the linear bias model describes the observed galaxy clustering to 2.5 percent accuracy down to scales at least 4–10 times smaller than those on which linear theory is expected to be sufficient.

  12. A review of "Description de l'ule de Portraiture et de la ville des Portraits (1659)" by Charles Sorel, Ed. by Martine Debaisieux 

    E-Print Network [OSTI]

    Schroder, Volker

    2007-01-01

    that should find its way into all good libraries. Catherine Marchal-Weyl. Le Tailleur et le fripier. Transformations des personnages de la comedia sur la sc?ne fran?aise (1630-1660). Geneva: Droz, 2007. 399 pp. CHF 150. Review by ROLAND RACEVSKIS... Sorel. Description de l??le de Portraiture et de la ville des Portraits (1659). Critical edition by Martine Debaisieux. Preface by Michel Jeanneret. Textes Litt?raires Fran?ais, 582. Geneva: Librairie Droz, 2006. 199 pp. + 8 illus. SF 38...

  13. Le mode d'emergence du Reel - L'avenement des manifestations de la base (gzhi snang) selon les conceptions de la Grande Perfection

    E-Print Network [OSTI]

    Achard, Jean-Luc

    2005-01-01

    — LE MODE D’EMERGENCE DU REEL —L’AVENEMENT DES MANIFESTATIONS DE LA BASE (GZHI SNANG)SELON LES CONCEPTIONS DE LA GRANDE PERFECTION* Par Jean-Luc Achard (CNRS) a tradition tibétaine de la Grande Perfection (rDzogs chen)représente un courant important... ’àl’époque dynastique (8e siècle) au Tibet1. L’un des élements essentiels de sapensée consiste dans la notion de Base (gzhi) qui est la pierre angulaire desenseignements de la Grande Perfection2.Définie en tant que la “Base de l’état naturel” (gzhi’i gnas lugs) del...

  14. Search for Gamma-Ray Emission from DES Dwarf Spheroidal Galaxy Candidates with Fermi-LAT Data

    E-Print Network [OSTI]

    The Fermi-LAT Collaboration; The DES Collaboration; :; A. Drlica-Wagner; A. Albert; K. Bechtol; M. Wood; L. Strigari; M. Sanchez-Conde; L. Baldini; R. Essig; J. Cohen-Tanugi; B. Anderson; R. Bellazzini; E. D. Bloom; R. Caputo; C. Cecchi; E. Charles; J. Chiang; J. Conrad; A. de Angelis; S. Funk; P. Fusco; F. Gargano; N. Giglietto; F. Giordano; S. Guiriec; M. Gustafsson; M. Kuss; F. Loparco; P. Lubrano; N. Mirabal; T. Mizuno; A. Morselli; T. Ohsugi; E. Orlando; M. Persic; S. Raino; F. Spada; D. J. Suson; G. Zaharijas; S. Zimmer; T. Abbott; S. Allam; E. Balbinot; A. H. Bauer; A. Benoit-Levy; R. A. Bernstein; G. M. Bernstein; E. Bertin; D. Brooks; E. Buckley-Geer; D. L. Burke; A. Carnero Rosell; F. J. Castander; R. Covarrubias; C. B. D'Andrea; L. N. da Costa; D. L. DePoy; S. Desai; H. T. Diehl; C. E Cunha; T. F. Eifler; J. Estrada; A. E. Evrard; A. Fausti Neto; E. Fernandez; D. A. Finley; B. Flaugher; J. Frieman; E. Gaztanaga; D. Gerdes; D. Gruen; R. A. Gruendl; G. Gutierrez; K. Honscheid; B. Jain; D. James; T. Jeltema; S. Kent; R. Kron; K. Kuehn; N. Kuropatkin; O. Lahav; T. S. Li; E. Luque; M. A. G. Maia; M. Makler; M. March; J. Marshall; P. Martini; K. W. Merritt; C. Miller; R. Miquel; J. Mohr; E. Neilsen; B. Nord; R. Ogando; J. Peoples; D. Petravick; A. Pieres; A. A. Plazas; A. Queiroz; A. K. Romer; A. Roodman; E. S. Rykoff; M. Sako; E. Sanchez; B. Santiago; V. Scarpine; M. Schubnell; I. Sevilla; R. C. Smith; M. Soares-Santos; F. Sobreira; E. Suchyta; M. E. C. Swanson; G. Tarle; J. Thaler; D. Thomas; D. Tucker; A. Walker; R. H. Wechsler; W. Wester; P. Williams; B. Yanny; J. Zuntz

    2015-03-19

    Due to their proximity, high dark matter content, and apparent absence of non-thermal processes, Milky Way dwarf spheroidal satellite galaxies (dSphs) are excellent targets for the indirect detection of dark matter. Recently, eight new dSph candidates were discovered using the first year of data from the Dark Energy Survey (DES). We searched for gamma-ray emission coincident with the positions of these new objects in six years of Fermi Large Area Telescope data. We found no significant excesses of gamma-ray emission. Under the assumption that the DES candidates are dSphs with dark matter halo properties similar to the known dSphs, we computed individual and combined limits on the velocity-averaged dark matter annihilation cross section for these new targets. If confirmed, they will constrain the annihilation cross section to lie below the thermal relic cross section for dark matter particles with masses < 20 GeV annihilating via the b-bbar or tau+tau- channels.

  15. Search for Gamma-Ray Emission from DES Dwarf Spheroidal Galaxy Candidates with Fermi-LAT Data

    E-Print Network [OSTI]

    :,; Albert, A; Bechtol, K; Wood, M; Strigari, L; Sanchez-Conde, M; Baldini, L; Essig, R; Cohen-Tanugi, J; Anderson, B; Bellazzini, R; Bloom, E D; Caputo, R; Cecchi, C; Charles, E; Chiang, J; Conrad, J; de Angelis, A; Funk, S; Fusco, P; Gargano, F; Giglietto, N; Giordano, F; Guiriec, S; Gustafsson, M; Kuss, M; Loparco, F; Lubrano, P; Mirabal, N; Mizuno, T; Morselli, A; Ohsugi, T; Orlando, E; Persic, M; Raino, S; Spada, F; Suson, D J; Zaharijas, G; Zimmer, S; Abbott, T; Allam, S; Balbinot, E; Bauer, A H; Benoit-Levy, A; Bernstein, R A; Bernstein, G M; Bertin, E; Brooks, D; Buckley-Geer, E; Burke, D L; Rosell, A Carnero; Castander, F J; Covarrubias, R; D'Andrea, C B; da Costa, L N; DePoy, D L; Desai, S; Diehl, H T; Cunha, C E; Eifler, T F; Estrada, J; Evrard, A E; Neto, A Fausti; Fernandez, E; Finley, D A; Flaugher, B; Frieman, J; Gaztanaga, E; Gerdes, D; Gruen, D; Gruendl, R A; Gutierrez, G; Honscheid, K; Jain, B; James, D; Jeltema, T; Kent, S; Kron, R; Kuropatkin, N; Lahav, O; Li, T S; Luque, E; Maia, M A G; Makler, M; March, M; Marshall, J; Martini, P; Merritt, K W; Miller, C; Miquel, R; Mohr, J; Neilsen, E; Nord, B; Ogando, R; Peoples, J; Petravick, D; Pieres, A; Plazas, A A; Queiroz, A; Romer, A K; Roodman, A; Rykoff, E S; Sako, M; Sanchez, E; Santiago, B; Scarpine, V; Schubnell, M; Sevilla, I; Smith, R C; Soares-Santos, M; Sobreira, F; Suchyta, E; Swanson, M E C; Tarle, G; Thaler, J; Thomas, D; Tucker, D; Walker, A; Wechsler, R H; Wester, W; Williams, P; Yanny, B; Zuntz, J

    2015-01-01

    Due to their proximity, high dark matter content, and apparent absence of non-thermal processes, Milky Way dwarf spheroidal satellite galaxies (dSphs) are excellent targets for the indirect detection of dark matter. Recently, eight new dSph candidates were discovered using the first year of data from the Dark Energy Survey (DES). We searched for gamma-ray emission coincident with the positions of these new objects in six years of Fermi Large Area Telescope data. We found no significant excesses of gamma-ray emission. Under the assumption that the DES candidates are dSphs with dark matter halo properties similar to the known dSphs, we computed individual and combined limits on the velocity-averaged dark matter annihilation cross section for these new targets. If confirmed, they will constrain the annihilation cross section to lie below the thermal relic cross section for dark matter particles with masses < 20 GeV annihilating via the b-bbar or tau+tau- channels.

  16. Search for Gamma-Ray Emission from DES Dwarf Spheroidal Galaxy Candidates with Fermi-LAT Data

    E-Print Network [OSTI]

    The Fermi-LAT Collaboration; The DES Collaboration; :; A. Drlica-Wagner; A. Albert; K. Bechtol; M. Wood; L. Strigari; M. Sanchez-Conde; L. Baldini; R. Essig; J. Cohen-Tanugi; B. Anderson; R. Bellazzini; E. D. Bloom; R. Caputo; C. Cecchi; E. Charles; J. Chiang; A. de Angelis; S. Funk; P. Fusco; F. Gargano; N. Giglietto; F. Giordano; S. Guiriec; M. Gustafsson; M. Kuss; F. Loparco; P. Lubrano; N. Mirabal; T. Mizuno; A. Morselli; T. Ohsugi; E. Orlando; M. Persic; S. Raino; N. Sehgal; F. Spada; D. J. Suson; G. Zaharijas; S. Zimmer; T. Abbott; S. Allam; E. Balbinot; A. H. Bauer; A. Benoit-Levy; R. A. Bernstein; G. M. Bernstein; E. Bertin; D. Brooks; E. Buckley-Geer; D. L. Burke; A. Carnero Rosell; F. J. Castander; R. Covarrubias; C. B. D'Andrea; L. N. da Costa; D. L. DePoy; S. Desai; H. T. Diehl; C. E Cunha; T. F. Eifler; J. Estrada; A. E. Evrard; A. Fausti Neto; E. Fernandez; D. A. Finley; B. Flaugher; J. Frieman; E. Gaztanaga; D. Gerdes; D. Gruen; R. A. Gruendl; G. Gutierrez; K. Honscheid; B. Jain; D. James; T. Jeltema; S. Kent; R. Kron; K. Kuehn; N. Kuropatkin; O. Lahav; T. S. Li; E. Luque; M. A. G. Maia; M. Makler; M. March; J. Marshall; P. Martini; K. W. Merritt; C. Miller; R. Miquel; J. Mohr; E. Neilsen; B. Nord; R. Ogando; J. Peoples; D. Petravick; A. Pieres; A. A. Plazas; A. Queiroz; A. K. Romer; A. Roodman; E. S. Rykoff; M. Sako; E. Sanchez; B. Santiago; V. Scarpine; M. Schubnell; I. Sevilla; R. C. Smith; M. Soares-Santos; F. Sobreira; E. Suchyta; M. E. C. Swanson; G. Tarle; J. Thaler; D. Thomas; D. Tucker; A. Walker; R. H. Wechsler; W. Wester; P. Williams; B. Yanny; J. Zuntz

    2015-08-16

    Due to their proximity, high dark-matter content, and apparent absence of non-thermal processes, Milky Way dwarf spheroidal satellite galaxies (dSphs) are excellent targets for the indirect detection of dark matter. Recently, eight new dSph candidates were discovered using the first year of data from the Dark Energy Survey (DES). We searched for gamma-ray emission coincident with the positions of these new objects in six years of Fermi Large Area Telescope data. We found no significant excesses of gamma-ray emission. Under the assumption that the DES candidates are dSphs with dark matter halo properties similar to the known dSphs, we computed individual and combined limits on the velocity-averaged dark matter annihilation cross section for these new targets. If the estimated dark-matter content of these dSph candidates is confirmed, they will constrain the annihilation cross section to lie below the thermal relic cross section for dark matter particles with masses < 20 GeV annihilating via the b-bbar or tau+tau- channels.

  17. IFT6299 Miklos Csuros 13 fevrier 2014 1. TP: annotation de conservation

    E-Print Network [OSTI]

    Csürös, Miklós

    ://www.saccharomycessensustricto.org/ pour cinq esp`eces : S. cerevisiæ (Scer), S. paradoxus (Spar), S. mikataæ (Smik), S. kudriavzevii IFO moins 200 pb de longueur et qu'il contient tous les cinq esp`eces Scer, Spar, Smik, Skud, et Sbay. Changer le nom des s´equences dans le fichier Fasta `a Scer, Spar, . . . (il faut utiliser le m^eme nom

  18. Optimisation parametrique de l'ECS solaire et de la repartition des panneaux thermiques et PV pour une maison `a bilan energie positif

    E-Print Network [OSTI]

    Boyer, Edmond

    chacun des param`etres ´etudi´es. Nous r´eduisons d'un facteur trois les besoins ´energ´etiques annuels sensitivity analysis of the dynamic simulation of the Solar Domestic Hot Water (SDHW) and Photovoltaic (PV) solar systems in an energy positive house. The optimized parameters concern the solar collectors

  19. Published: April 25, 2011 r 2011 American Chemical Society 2264 dx.doi.org/10.1021/cg1016802 |Cryst. Growth Des. 2011, 11, 22642272

    E-Print Network [OSTI]

    ,11 The synthesis of goethite has been studied for decades (e.g., refs 12À20), and studies to improve the existing and novel synthesis route for submicrometric acicular goethite (R-FeOOH) using high OH/Fe molar ratio (=5. Growth Des. 2011, 11, 2264­2272 ARTICLE pubs.acs.org/crystal Fast Precipitation of Acicular Goethite from

  20. TAIWAN / SOCIT 1 Recomposition des faits religieux rJ~~~jrl!joe1!J~!(!fcr. '111,

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    r TAIWAN / SOCIÉTÉ 1 Recomposition des faits religieux rJ~~~jrl!joe1!J~!(!fcr. '111, et tensions identitaires à Taiwan L'exemple de la «nouvelle religion» Yiguan dao EVELYNE MICOLLIER -.1 , 1 D ES phénomènes dans la décennie nombreusesbranchessouventen concurrenceles unes 1980 à Taiwan. Ils ont une filiation

  1. Planification de la tourne des infirmiers dans une structure de soins BEN BACHOUCH Rym1, 2, FAKHFAKH Myriam1, GUINET Alain1, HAJRI-GABOUJ Sonia2

    E-Print Network [OSTI]

    Boyer, Edmond

    Planification de la tournée des infirmiers dans une structure de soins à domicile BEN BACHOUCH Rym1 infirmiers est une problématique difficile qui constitue le point central de notre travail. Nous décrivons mixte permettant d'affecter à chaque infirmier un ensemble de patients à visiter durant sa tournée. Ce

  2. Confrence Internationale de MOdlisation et SIMulation -MOSIM'10 -10 au 12 mai 2010 -Hammamet -Tunisie Evaluation et optimisation des systmes innovants de production de biens et de services

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    'Établissement Hospitalier (PEH) a été récemment introduit dans le management hospitalier au Maroc pour résoudre des de la planification stratégique. En outre, le Projet d'Etablissement Hospitalier (PEH) est considéré comme un véritable vecteur de changement en milieu hospitalier, qui interpelle les institutions dans

  3. DTERMINATION GRAPHIQUE DES COEFFICIENTS DE FRESNEL EN INCIDENCE OBLIQUE A LA SURFACE DE SPARATION D'UN MILIEU TRANSPARENT ET D'UN MILIEU ABSORBANT

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    294. DÉTERMINATION GRAPHIQUE DES COEFFICIENTS DE FRESNEL EN INCIDENCE OBLIQUE A LA SURFACE DE coefficients de Fresnel ainsi obtenus, on a également déterminé pour diverses incidences le facteur de. Cette précision atteint I/I000 en valeur relative pour les coefficients de Fresnel et quelques millièmes

  4. 9 Swing 9.4 Kniffel: Schrittweiser Aufbau des Programms 9-23 Statt paintComponent() knnten wir auch paint() berschreiben.

    E-Print Network [OSTI]

    Arndt, Holger

    9 Swing 9.4 Kniffel: Schrittweiser Aufbau des Programms 9-23 · Statt paintComponent() könnten wir auch paint() überschreiben. · Die von JComponent geerbte paint()-Methode ruft nacheinander die folgenden drei Methoden auf: paintComponent(), paintBorder() und paintChildren(). · All diese Methoden haben

  5. L'avenir de l'Europe en dbat Sciences Po Le Council for European Studies (CES) est une institution fonde en 1970 qui runit des

    E-Print Network [OSTI]

    Wolf, Christian

    L'avenir de l'Europe en débat à Sciences Po Le Council for European Studies York, elle a pour mission de promouvoir la recherche sur l'Europe au sein des sciences humaines et qui a pour thème l'avenir de l'Europe : « Contradictions: Envisioning European Futures ». Plus de 300

  6. Please cite this article in press as: E.J. Pitcher, Fusion materials irradiations at MaRIE'S fission fusion facility, Fusion Eng. Des. (2011), doi:10.1016/j.fusengdes.2010.11.032

    E-Print Network [OSTI]

    2011-01-01

    Please cite this article in press as: E.J. Pitcher, Fusion materials irradiations at MaRIE'S fission fusion facility, Fusion Eng. Des. (2011), doi:10.1016/j.fusengdes.2010.11.032 ARTICLE IN PRESS

  7. Évaluation de la dose de surexposition auprès des accélérateurs de haute énergie par la reaction c${^1}$${^2}$ (x, nx) c${^1}$${^1}$ dans le système pileux

    E-Print Network [OSTI]

    Charalambus, S

    1965-01-01

    Évaluation de la dose de surexposition auprès des accélérateurs de haute énergie par la reaction c${^1}$${^2}$ (x, nx) c${^1}$${^1}$ dans le système pileux

  8. Pour Citer : Dury S., Temple L., 1999. La diversification fruitire des exploitations pri-urbaines dans la rgion de Yaound, quelles consquences pour l'orientation de la recherche ? Communication Actes Symposium International Plantaire 99. Chambery France p

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Pour Citer : Dury S., Temple L., 1999. La diversification fruitière des exploitations péri., Temple L., 1999. La diversification fruitière des exploitations péri-urbaines dans la région de Yaoundé Planétaire 99. Chambery France pp.531-535. #12;Pour Citer : Dury S., Temple L., 1999. La diversification

  9. Direction des ressources humaines Mission Insertion Handicap -procdure officielle -08/06/2015 Fiche de poste pour le recrutement par la voie contractuelle

    E-Print Network [OSTI]

    van Tiggelen, Bart

    au sein du Comité d'Action et d'Entraide Sociales (CAES) MISSION Il/Elle assure la Gestion'Action et d'Entraide Sociales CAES, GANAEL, gérant toutes les activités et prestations CAES dont peuvent capable de s'adapter au logiciel spécifique, GANAEL, pour le traitement des activités CAES (formation

  10. Eight Ultra-faint Galaxy Candidates Discovered in Year Two of the Dark Energy Survey

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Drlica-Wagner, A.

    2015-11-04

    We report the discovery of eight new ultra-faint dwarf galaxy candidates in the second year of optical imaging data from the Dark Energy Survey (DES). Six of these candidates are detected at high confidence, while two lower-confidence candidates are identified in regions of non-uniform survey coverage. The new stellar systems are found by three independent automated search techniques and are identified as overdensities of stars, consistent with the isochrone and luminosity function of an old and metal-poor simple stellar population. The new systems are faint (MV > -4.7 ) and span a range of physical sizes (17 pc 1/2more »pc) and heliocentric distances (25 kpc ? mag arcsec -2). Roughly half of the DES candidates are more distant, less luminous, and/or have lower surface brightnesses than previously known Milky Way satellite galaxies. Most of the candidates are found in the southern part of the DES footprint close to the Magellanic Clouds. We find that the DES data alone exclude (p -3) a spatially isotropic distribution of Milky Way satellites and that the observed distribution can be well, though not uniquely, described by an association between several of the DES satellites and the Magellanic system. Our model predicts that the full sky may hold ~100 ultra-faint galaxies with physical properties comparable to the DES satellites and that 20%–30% of these would be spatially associated with the Magellanic Clouds.« less

  11. DES DIRIGEANTS ET DES CADRES FORMS

    E-Print Network [OSTI]

    Shoubridge, Eric

    Advanced Management Course (AMC) - Montreal Strategic Planning & Execution Integrated Management Thinking Advances through the major disciplines of management in greater depth and with a strategic perspective) Mini-MBA for experienced managers Integrated Management Thinking (IMT) Mini-MBA for strategic decision

  12. GREGOIRE LEDOUX SEQUENCE DES EVENEMENTS DES MOUVEMENTS

    E-Print Network [OSTI]

    sedimentary infill is specified. Numerous mass movements were identified and described. Seismic stratigraphie horizons dated in previous studies were used to reconstruct the first event stratigraphy of mass movements

  13. La premiere somme philosophique du bouddhisme tibetain. Origines litteraires, philosophiques et mythologiques des Neuf etatpes de la Voie (theg pa rim pa dgu)

    E-Print Network [OSTI]

    Mestanza, Ferran

    2005-01-01

    soutenu à l'École Pratique des Hautes Études en octobre 2004. Pour sonélaboration, j’ai pu bénéficier de l'aide inestimable d'Anne-Marie Blondeau, Jean-Luc Achard,Pierre Arènes, Lama Trinle Dorje et Lama Tenzin Samphel. La rédaction de cet article a... 'étapeméditative (tib. sgom rim) de l'accomplissement graduel (tib. rdzogs rim) dans lastructure d'une somme philosophique, ce qui permet d'insérer la vue de la 12 Achard, 1999 : 23, n. 41. Cependant, cette structure...

  14. The Chemical Enrichment History of the Large Magellanic Cloud

    E-Print Network [OSTI]

    Ricardo Carrera; Carme Gallart; Eduardo Hardy; Antonio Aparicio; Robert Zinn

    2007-10-16

    Ca II triplet spectroscopy has been used to derive stellar metallicities for individual stars in four LMC fields situated at galactocentric distances of 3\\arcdeg, 5\\arcdeg, 6\\arcdeg\\@ and 8\\arcdeg\\@ to the north of the Bar. Observed metallicity distributions show a well defined peak, with a tail toward low metallicities. The mean metallicity remains constant until 6\\arcdeg\\@ ([Fe/H]$\\sim$-0.5 dex), while for the outermost field, at 8\\arcdeg, the mean metallicity is substantially lower than in the rest of the disk ([Fe/H]$\\sim$-0.8 dex). The combination of spectroscopy with deep CCD photometry has allowed us to break the RGB age--metallicity degeneracy and compute the ages for the objects observed spectroscopically. The obtained age--metallicity relationships for our four fields are statistically indistinguishable. We conclude that the lower mean metallicity in the outermost field is a consequence of it having a lower fraction of intermediate-age stars, which are more metal-rich than the older stars. The disk age--metallicity relationship is similar to that for clusters. However, the lack of objects with ages between 3 and 10 Gyr is not observed in the field population. Finally, we used data from the literature to derive consistently the age--metallicity relationship of the bar. Simple chemical evolution models have been used to reproduce the observed age--metallicity relationships with the purpose of investigating which mechanism has participated in the evolution of the disk and bar. We find that while the disk age--metallicity relationship is well reproduced by close-box models or models with a small degree of outflow, that of the bar is only reproduced by models with combination of infall and outflow.

  15. Dust Cooling in Supernova Remnants in the Large Magellanic Cloud

    E-Print Network [OSTI]

    Seok, Ji Yeon; Hirashita, Hiroyuki

    2015-01-01

    The infrared-to-X-ray (IRX) flux ratio traces the relative importance of dust cooling to gas cooling in astrophysical plasma such as supernova remnants (SNRs). We derive IRX ratios of SNRs in the LMC using Spitzer and Chandra SNR survey data and compare them with those of Galactic SNRs. IRX ratios of all the SNRs in the sample are found to be moderately greater than unity, indicating that dust grains are a more efficient coolant than gas although gas cooling may not be negligible. The IRX ratios of the LMC SNRs are systematically lower than those of the Galactic SNRs. As both dust cooling and gas cooling pertain to the properties of the interstellar medium, the lower IRX ratios of the LMC SNRs may reflect the characteristics of the LMC, and the lower dust-to- gas ratio (a quarter of the Galactic value) is likely to be the most significant factor. The observed IRX ratios are compared with theoretical predictions that yield IRX ratios an order of magnitude larger. This discrepancy may originate from the dearth ...

  16. Magellan at NERSC Progress Report for June 2010

    E-Print Network [OSTI]

    Broughton, Richard Canon, Lavanya Ramakrishnan, Brent Draney, Jeff

    2011-01-01

    User-Provided Images The majority of cloud related securityCan multiple DOE clouds run at di?erent security levels andand security research has been from the perspective of the cloud

  17. Ultra-Low Amplitude Cepheids in the Large Magellanic Cloud

    E-Print Network [OSTI]

    J. Robert Buchler; Peter R. Wood; Stefan Keller; Igor Soszynski

    2005-08-26

    The MACHO variables of LMC Field 77 that lie in the vicinity of the Cepheid instability strip are reexamined. Among the 144 variables that we identify as Cepheids we find 14 that have Fourier amplitudes ultra-low amplitude (ULA) Cepheids. The variability of these objects is verified by a comparison of the MACHO red with the MACHO blue lightcurves and with those of the corresponding OGLE LMC stars. The occurrence of ULA Cepheids is in agreement with theory. We have also discovered 2 low amplitude variables whose periods are about a factor of 5--6 smaller than those of F Cepheids of equal apparent magnitude. We suggest that these objects are Cepheids undergoing pulsations in a surface mode and that they belong to a novel class of Strange Cepheids (or Surface Mode Cepheids) whose existence was predicted by Buchler et al. (1997).

  18. Magellan at NERSC Progress Report for June 2010

    E-Print Network [OSTI]

    Broughton, Richard Canon, Lavanya Ramakrishnan, Brent Draney, Jeff

    2011-01-01

    33] R. Masud, “High Performance Computing with Clouds. ” [framework for high-performance computing systems. In IEEEConference for High Performance Computing, Networking,

  19. Please cite this article in press as: A. Sagara, et al., Review of stellarator/heliotron design issues towards MFE DEMO, Fusion Eng. Des. (2010), doi:10.1016/j.fusengdes.2010.03.041

    E-Print Network [OSTI]

    Najmabadi, Farrokh

    2010-01-01

    reactor ARIES-CS (compact stellarator). Therefore, from the aspect towards MFE DEMO, this paper makes issues towards MFE DEMO, Fusion Eng. Des. (2010), doi:10.1016/j.fusengdes.2010.03.041 ARTICLE IN PRESS GModel FUSION-5156; No.of Pages6 Fusion Engineering and Design xxx (2010) xxx­xxx Contents lists

  20. Colloque CFBR-SHF: Dimensionnement et fonctionnement des vacuateurs de crues, 20-21 janvier 2009, Lyon -Paul Royet, Grard Degoutte, Laurent Peyras, Jacques Lavabre, Franois Lemperrire Cotes et crues de protection, de sret et de danger de rupture

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    crues de protection, de sûreté et de danger de rupture COTES ET CRUES DE PROTECTION, DE SURETE ET DE DANGER DE RUPTURE Protection, safety and danger levels and associated floods Paul Royet, Gérard Degoutte de la cote de sûreté ou de la cote de danger de rupture, et parallèlement de proposer des valeurs

  1. Depuis plus de 30 ans, l'tude du diabte est l'un des domaines de recherche phares de la Facult de mdecine de l'Universit de Genve (UNIGE). Afin de

    E-Print Network [OSTI]

    Shore, David

    Depuis plus de 30 ans, l'étude du diabète est l'un des domaines de recherche phares de la Faculté.coppari@unige.ch Pierre Maechler, pour la Journée portes ouvertes 022 379 55 54 pierre.maechler@unige.ch contact

  2. Undergraduate s tudent res earch as s is tant Kathleen Huynh is culturing hum an cancer cells and tes ting them for s ens itivity to com pounds des igned by New

    E-Print Network [OSTI]

    Borchers, Brian

    and tes ting them for s ens itivity to com pounds des igned by New Mexico Tech's Chem ical Biology . Overall, the university wants to create a "culture of entrepreneurship" on campus, said New Mexico Tech Center Inc. New Mexico Tech, however, has lagged behind in building a tech-transfer program

  3. Roditi E. (2012) L'enseignement du calcul de doses mdicamenteuses : un dfi pour la sant publique au 21e sicle. In Dorier J.-L., Coutat S. (Eds.) Enseignement des mathmatiques et contrat social : enjeux et dfis pour

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2012-01-01

    Éric RODITI* Résumé ­ Le calcul de doses médicamenteuses est réalisé par l'infirmier pour administrer, puis questionne leur pertinence par une étude de différents calculs de doses menés par des infirmiers doses, soins infirmiers Abstract ­ Drug calculations are performed by nurses to administer a treatment

  4. Eurotherm Seminar N81 Reactive Heat Transfer in Porous Media, Ecole des Mines d'Albi, France June 4-6, 2007 ET81-1 HEAT TRANSFER BY SIMULTANEOUS RADIATION-CONDUCTION

    E-Print Network [OSTI]

    Boyer, Edmond

    Eurotherm Seminar N°81 Reactive Heat Transfer in Porous Media, Ecole des Mines d'Albi, France June 4-6, 2007 ET81- 1 HEAT TRANSFER BY SIMULTANEOUS RADIATION-CONDUCTION AND CONVECTION IN A HIGH for the packed bed. The comparison between the radiative heat transfer and the exchanges by conduction and forced

  5. Discovery of two gravitationally lensed quasars in the Dark Energy Survey

    E-Print Network [OSTI]

    Agnello, Adriano; Ostrovski, Fernanda; Schechter, Paul L; Buckley-Geer, Elizabeth J; Lin, Huan; Auger, Matthew W; Courbin, Frederic; Fassnacht, Christopher D; Frieman, Josh; Kuropatkin, Nikolay; Marshall, Philip J; McMahon, Richard G; Meylan, Georges; More, Anupreeta; Suyu, Sherry H; Rusu, Cristian E; Finley, David; Abbott, Tim; Abdalla, Filipe B; Allam, Sahar; Annis, James; Banerji, Manda; Benoit-Lévy, Aurélien; Bertin, Emmanuel; Brooks, David; Burke, David L; Rosell, Aurelio Carnero; Kind, Matias Carrasco; Carretero, Jorge; Cunha, Carlos E; D'Andrea, Chris B; da Costa, Luiz N; Desai, Shantanu; Diehl, H Thomas; Dietrich, Jörg P; Doel, Peter; Eifler, Tim F; Estrada, Juan; Neto, Angelo Fausti; Flaugher, Brenna; Fosalba, Pablo; Gerdes, David W; Gruen, Daniel; Gutierrez, Gaston; Honscheid, Klaus; James, David J; Kuehn, Kyler; Lahav, Ofer; Lima, Marco; Maia, Marcio A G; March, Marina; Marshall, Jennifer L; Martini, Paul; Melchior, Peter; Miller, Christopher J; Miquel, Ramon; Nichol, Robert C; Ogando, Ricardo; Plazas, Andres A; Reil, Kevin; Romer, A Kathy; Roodman, Aaron; Sako, Masao; Sanchez, Eusebio; Santiago, Basilio; Scarpine, Vic; Schubnell, Michael; Sevilla-Noarbe, Ignacio; Smith, R Chris; Soares-Santos, Marcelle; Sobreira, Flavia; Suchyta, Eric; Swanson, Molly E C; Tarle, Gregory; Thaler, Jon; Tucker, Douglas; Walker, Alistair R; Wechsler, Risa H; Zhang, Yuanyuan

    2015-01-01

    We present spectroscopic confirmation of two new lensed quasars via data obtained at the 6.5m Magellan/Baade Telescope. The lens candidates have been selected from the Dark Energy Survey (DES) and WISE based on their multi-band photometry and extended morphology in DES images. Images of DES J0115-5244 show two blue point sources at either side of a red galaxy. Our long-slit data confirm that both point sources are images of the same quasar at $z_{s}=1.64.$ The Einstein Radius estimated from the DES images is $0.51$". DES J2200+0110 is in the area of overlap between DES and the Sloan Digital Sky Survey (SDSS). Two blue components are visible in the DES and SDSS images. The SDSS fiber spectrum shows a quasar component at $z_{s}=2.38$ and absorption compatible with Mg II and Fe II at $z_{l}=0.799$, which we tentatively associate with the foreground lens galaxy. The long-slit Magellan spectra show that the blue components are resolved images of the same quasar. The Einstein Radius is $0.68$" corresponding to an e...

  6. MITTEILUNGSBLATT DES REKTORS

    E-Print Network [OSTI]

    Heermann, Dieter W.

    -Württemberg (Landeshochschulgesetz ­ LHG), zuletzt geändert durch das dritte Gesetz zur Änderung hochschulrechtlicher Vorschriften

  7. MITTEILUNGSBLATT DES REKTORS

    E-Print Network [OSTI]

    Heermann, Dieter W.

    Hochschulen in Baden-Württemberg (Landeshochschulgesetz ­ LHG), zuletzt geändert durch das dritte Gesetz zur

  8. Architecture des systmes informatiques

    E-Print Network [OSTI]

    Silber, Georges-André

    mémoires diverses · SRAM, DRAM, disque · Seule les régions utilisées sont allouées · OS modernes : espace d

  9. Titel des Moduls: Photovoltaik

    E-Print Network [OSTI]

    Wichmann, Felix

    Se/SoSe Ausgewählte Kapitel der Photovoltaik SE 2 3 WP SoSe Energiemanagement VL 2 3 WP WiSe Photovoltaik

  10. Un robot voiles pour des missions scientifiques Brest, le projet s'appelle Vaimos, pour Voilier Brest, le projet s'appelle Vaimos, pour Voilier Brest, le projet s'appelle Vaimos, pour Voilier Brest, le projet s'appelle Vaimos, pour Voilier

    E-Print Network [OSTI]

    Lherminier, Pascale

    Un robot à voiles pour des missions scientifiques À Brest, le projet s'appelle Vaimos, pour Voilier.océanographiques de surface.océanographiques de surface.océanographiques de surface. Ce robot voilier va réaliser

  11. Coiffe de pandit

    E-Print Network [OSTI]

    Bock, Etienne

    2008-01-01

    de cette manière à l’occasion des débats (rtsod pa). Un débat oppose au moins deux participants : le snga brgol ba, debout, pose les questions et le dam bca’ ba, assis, développe ses arguments face aux interrogations du premier. Ce dernier porte... [images 14]. Austin Waddell 5 5 l’appelle « Pa#6;-zhva sne-rid’ser-po » et le décrit ainsi : « This is a yellow variety of the red one of the same name, with the tails much lenghtened by Tso#5; K’apa. It is only worn with these long...

  12. Variations of Seminula Argentea (Shepherd)

    E-Print Network [OSTI]

    Miller, Raymond Foster

    1912-01-01

    ,, Keyes, Missouri Geol. Surv. Rept., vol. 5, p. 92, pl. 39, figs, lla-d. (Date of imprint 1894) Coal Measures: Kansas city, Lexington and Clinton, Mo, 1895 Seminula subtilita. Hall and Clarke, Geol. Surv. New York, Pal., vol. 8,.pt. 2, p. 95, figs. 66.... Nat. Sei. Philadelphia Proc,, p. 231. . Lower Coal Measures: Des Moines,Iowa. 1891 Athyris subtilita. ihitfield, New York Acad. Sei. Ann. vol, 5, p. 604, pl. 16, figs. 7-9. Coal Measures: Hocking County, Ohio. 1893 Seminula subtilita. Hall...

  13. Voil plus d'un an que nous nous prparions cette visite : le comit AERES sera dans nos murs la semaine prochaine pour valuer le bilan scientifique de notre unit au cours des dernires

    E-Print Network [OSTI]

    Cattin, Rodolphe

    édito Voilà plus d'un an que nous nous préparions à cette visite : le comité AERES sera dans nos laboratoire, doctorants compris, et les membres du comité AERES. Si des réunions sont organisées en amont par... les personnels - arrivée - distinction - naissance à savoir - visite du comité AERES - LIAArménie - 14

  14. Eight Ultra-faint Galaxy Candidates Discovered in Year Two of the Dark Energy Survey

    E-Print Network [OSTI]

    The DES Collaboration; A. Drlica-Wagner; K. Bechtol; E. S. Rykoff; E. Luque; A. Queiroz; Y. -Y. Mao; R. H. Wechsler; J. D. Simon; B. Santiago; B. Yanny; E. Balbinot; S. Dodelson; A. Fausti Neto; D. J. James; T. S. Li; M. A. G. Maia; J. L. Marshall; A. Pieres; K. Stringer; A. R. Walker; T. M. C. Abbott; F. B. Abdalla; S. Allam; A. Benoit-Levy; G. M. Bernstein; E. Bertin; D. Brooks; E. Buckley-Geer; D. L. Burke; A. Carnero Rosell; M. Carrasco Kind; J. Carretero; M. Crocce; L. N. da Costa; S. Desai; H. T. Diehl; J. P. Dietrich; P. Doel; T. F. Eifler; A. E. Evrard; D. A. Finley; B. Flaugher; P. Fosalba; J. Frieman; E. Gaztanaga; D. W. Gerdes; D. Gruen; R. A. Gruendl; G. Gutierrez; K. Honscheid; K. Kuehn; N. Kuropatkin; O. Lahav; P. Martini; R. Miquel; B. Nord; R. Ogando; A. A. Plazas; K. Reil; A. Roodman; M. Sako; E. Sanchez; V. Scarpine; M. Schubnell; I. Sevilla-Noarbe; R. C. Smith; M. Soares-Santos; F. Sobreira; E. Suchyta; M. E. C. Swanson; G. Tarle; D. Tucker; V. Vikram; W. Wester; Y. Zhang; J. Zuntz

    2015-11-06

    We report the discovery of eight new ultra-faint dwarf galaxy candidates in the second year of optical imaging data from the Dark Energy Survey (DES). Six of these candidates are detected at high confidence, while two lower-confidence candidates are identified in regions of non-uniform survey coverage. The new stellar systems are found by three independent automated search techniques and are identified as overdensities of stars, consistent with the isochrone and luminosity function of an old and metal-poor simple stellar population. The new systems are faint (Mv > -4.7 mag) and span a range of physical sizes (17 pc < $r_{1/2}$ < 181 pc) and heliocentric distances (25 kpc < D < 214 kpc). All of the new systems have central surface brightnesses consistent with known ultra-faint dwarf galaxies (\\mu < 27.5 mag arcsec$^{-2}$). Roughly half of the DES candidates are more distant, less luminous, and/or have lower surface brightnesses than previously known Milky Way satellite galaxies. Most of the candidates are found in the southern part of the DES footprint close to the Magellanic Clouds. We find that the DES data alone exclude (p < 0.001) a spatially isotropic distribution of Milky Way satellites and that the observed distribution can be well, though not uniquely, described by an association between several of the DES satellites and the Magellanic system. Our model predicts that the full sky may hold ~100 ultra-faint galaxies with physical properties comparable to the DES satellites and that 20-30% of these would be spatially associated with the Magellanic Clouds.

  15. Eight Ultra-faint Galaxy Candidates Discovered in Year Two of the Dark Energy Survey

    E-Print Network [OSTI]

    The DES Collaboration; A. Drlica-Wagner; K. Bechtol; E. S. Rykoff; E. Luque; A. Queiroz; Y. -Y. Mao; R. H. Wechsler; J. D. Simon; B. Santiago; B. Yanny; E. Balbinot; S. Dodelson; A. Fausti Neto; D. J. James; T. S. Li; M. A. G. Maia; J. L. Marshall; A. Pieres; K. Stringer; A. R. Walker; T. M. C. Abbott; F. B. Abdalla; S. Allam; A. Benoit-Levy; G. M. Bernstein; E. Bertin; D. Brooks; E. Buckley-Geer; D. L. Burke; A. Carnero Rosell; M. Carrasco Kind; J. Carretero; M. Crocce; L. N. da Costa; S. Desai; H. T. Diehl; J. P. Dietrich; P. Doel; T. F. Eifler; A. E. Evrard; D. A. Finley; P. Fosalba; J. Frieman; E. Gaztanaga; D. W. Gerdes; D. Gruen; R. A. Gruendl; G. Gutierrez; K. Honscheid; K. Kuehn; N. Kuropatkin; O. Lahav; P. Martini; R. Miquel; B. Nord; R. Ogando; A. A. Plazas; K. Reil; A. Roodman; M. Sako; E. Sanchez; V. Scarpine; M. Schubnell; I. Sevilla-Noarbe; R. C. Smith; M. Soares-Santos; F. Sobreira; E. Suchyta; M. E. C. Swanson; G. Tarle; D. Tucker; V. Vikram; W. Wester; Y. Zhang; J. Zuntz

    2015-08-14

    We report the discovery of eight new ultra-faint dwarf galaxy candidates in the second year of optical imaging data from the Dark Energy Survey (DES). Six of these candidates are detected at high confidence, while two additional lower-confidence candidates are identified in regions of incomplete or non-uniform survey coverage. The new stellar systems are found using three independent automated search techniques, and are identified as statistically significant overdensities of individually resolved stars consistent with the isochrone and luminosity function of an old and metal-poor simple stellar population. The new systems are faint (Mv > -4.7 mag) and span a broad range of physical sizes (17 pc 27.5 mag arcsec$^2$) consistent with known ultra-faint dwarf galaxies. Roughly half of the DES candidates are more distant, less luminous, and/or have lower surface brightnesses than previously known Milky Way satellite galaxies, and would have had a low probability of detection if observed by the Sloan Digital Sky Survey. A large fraction of satellite candidates are found in the southern half of the DES footprint in proximity to the Magellanic Clouds. We find that the DES data alone exclude (p < 0.001) a spatially isotropic distribution of Milky Way satellites, and that this distribution can be well, although not uniquely, explained by a model in which several of the observed DES satellites are associated with the Magellanic system. Including the current sample, our model predicts that ~100 ultra-faint galaxies with physical properties comparable to the DES satellites might exist over the full sky and that 20-30% of these would be spatially associated with the Magellanic Clouds.

  16. Discovery of Two Gravitationally Lensed Quasars in the Dark Energy Survey

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Agnello, A.

    2015-08-05

    We present spectroscopic confirmation of two new lensed quasars via data obtained at the 6.5m Magellan/Baade Telescope. The lens candidates have been selected from the Dark Energy Survey (DES) and WISE based on their multi-band photometry and extended morphology in DES images. Images of DES J0115-5244 show two blue point sources at either side of a red galaxy. Our long-slit data confirm that both point sources are images of the same quasar at zs = 1.64. The Einstein Radius estimated from the DES images is 0.51'' . DES J2146-0047 is in the area of overlap between DES and the Sloanmore »Digital Sky Survey (SDSS). Two blue components are visible in the DES and SDSS images. The SDSS fiber spectrum shows a quasar component at zs = 2.38 and absorption compatible with Mg II and Fe II at zl = 0.799, which we tentatively associate with the foreground lens galaxy. The long-slit Magellan spectra show that the blue components are resolved images of the same quasar. Furthermore, the Einstein Radius is 0.68'' corresponding to an enclosed mass of 1.6 × 1011 M?. Three other candidates were observed and rejected, two being low-redshift pairs of starburst galaxies, and one being a quasar behind a blue star. These first confirmation results provide an important empirical validation of the data-mining and model-based selection that is being applied to the entire DES dataset.« less

  17. Comparison of effectiveness of sub-slab ventilation systems for indoor radon mitigation: A numerical study; Comparaison a l`aide d`un outil numerique de l`efficacite des systemes de ventilation active du sol limitant la penetration du radon dans l`habitat

    SciTech Connect (OSTI)

    Bonnefous, Y.C. [Ecole Nationale des Travaux Publics de l`Etat, 69 - Vaulx en Velin (France). Lab. Sciences de l`Habitat]|[Lawrence Berkeley Lab., CA (United States); Gadgil, A.J. [Lawrence Berkeley Lab., CA (United States); Allard, F. [Institut National des Sciences Appliquees (INSA), 69 - Villeurbanne (France)

    1992-04-01

    The functioning of an active sub-slab ventilation system (SVS) has been studied successfully with the help of a previously evaluated numerical model. The parameters explored are the permeability of the sub-slab and the gravel placed beneath it, the amplitude of applied pressure at the installation point of the system and the functioning method: depressurization or pressurization. The mechanisms contributing to the success of the two systems are identified. This numerical study shows that the presence of a layer of gravel beneath the sub-slab considerably improves the performance of the SVS. Considered separately from the extremely permeable sub-slabs, the depressurization systems perform better than the pressurization systems. 17 refs. [Francais] Le fonctionnement des Systemes de Ventilation active du Sol (SVS) a ete etudie a l`aide d`un outil numerique precedemment evalue avec succes. Les parametres explores sont les permeabilites du sol et du gravier place sous plancher bas, l`amplitude de la pression appliquee au point d`installation du systeme, et le mode de fonctionnement: Depressurisation ou Pressurisation. Les mecanismes contribuant au succes des deux systemes sont identifies. Cette etude numerique montre que la presence d`une couche de gravier sous plancher bas ameliore de facon considerable les performances des SVS. Mis a part le cas des sols extremement permeables, les systemes de Depressurisation ont de meilleures performances que les systemes de Pressurisation. 17 refs.

  18. Please cite this article in press as: G. Prez, et al., Optimized mass flow rate distribution analysis for cooling the ITER Blanket System, Fusion Eng. Des. (2014), http://dx.doi.org/10.1016/j.fusengdes.2014.03.002

    E-Print Network [OSTI]

    Raffray, A. René

    2014-01-01

    analysis for cooling the ITER Blanket System, Fusion Eng. Des. (2014), http://dx.doi.org/10.1016/j.elsevier.com/locate/fusengdes Optimized mass flow rate distribution analysis for cooling the ITER Blanket System Germán Pérez , Raphaël: ITER Blanket System Mass flow rate Critical heat flux a b s t r a c t This paper presents the rationale

  19. Whrend nchtlicher Angiotensin-II-Infusion Anhebung des Blutdrucks auf Tagesniveau ohne Reflexbradykardie Am Folgetag (Non-Dipping vs. Placebo): 1. Erhhung der MSNA: 17.6 2.8 bursts/min vs. 12.5 2.1 MW SEM); p=0.029

    E-Print Network [OSTI]

    Groppe, Jinghua

    Ergebnisse Während nächtlicher Angiotensin-II-Infusion Anhebung des Blutdrucks auf Tagesniveau-Setpoint Nächtliche Angiotensin II-Infusion beeinflusst zentrale Regulationszentren, die dem Baroreflex- regelkreis. Experimentelles Non-Dipping mittels Angiotensin II-Infusion führt bei gesunden Probanden zu erhöhtem

  20. JJA Journes des Jeunes Amricanistes JJA Journes des Jeunes Am

    E-Print Network [OSTI]

    van Tiggelen, Bart

    'Amérique C une rencontre annuelle qui ouvre un espace de discussion, méthodologique dans un cadre scientifique international. C'est un espace de travail et d adressé aux étudiants qui se trouvent dans leur/conflit, territoire/espac territoire/espace social et culturel, territoire/ Jeunes Américanistes ­ Édition 2012

  1. Accessibilit des sites universitaires universitaires

    E-Print Network [OSTI]

    Sart, Remi

    (carte d'accès) CARNOT Accès rue d'Amboise Tous les bâtiments accessibles (Carnot, Paul Collomp) OUI gros amphis + tous ceux du pôle physique) OUI (sauf quelques unes au premier cycle) OUI (pôle physique

  2. LABORATOIRE DE PHYSIQUE DES SOLIDES

    E-Print Network [OSTI]

    Paris-Sud 11, Université de

    State University Fermi surface and magnetic order in heavy rare-earth metals: a new type of the magnetic phase transition. A wide variety of complex magnetic structures in heavy rare earth metals is known

  3. TRAITEMENT DES EFFLUENTS WASTE TREATMENT

    E-Print Network [OSTI]

    Boyer, Edmond

    residence time the production of biogas (7l-78 p. 100 CH,) was 237 1 per kg dry matter, i.e. 479 1 of CH to obtain the same amount of biogas four times quicklier. The treatment yield was improved (65 p. 100 COD). The mean production was 4931 biogas/kg degraded COD. It seems to be possible to apply that procedure

  4. COMMISSION INTERNATIONALE DES GRANDS BARRAGES

    E-Print Network [OSTI]

    Cirpka, Olaf Arie

    dams is that they are subject to so-called "In-Depth Hydraulic Structure Examinations" at regular-Vietnam, may 2010 ARCH EFFECT OF CURVED GRAVITY DAMS ( *) Tobias GEBLER Dipl.-Ing., University Stuttgart, Institute of Hydraulic Engineering Silke WIEPRECHT Prof. Dr.-Ing. , University Stuttgart, Institute

  5. A New Population of Planetary Nebulae Discovered in the Large Magellanic Cloud

    E-Print Network [OSTI]

    Parker, Quentin A.

    presented by Warren Alfred Reid Master of Astronomy to the Department of Physics, Macquarie University of c(H) (0.01­ 3.4) is in agreement with previous estimates with a peak at 0.6. An electron density has is in general agreement with previous LMC PN studies however a peak in the distribution at 158.4 g cm3 has been

  6. Optical photometry of the eclipsing Large Magellanic Cloud supersoft source CAL 87

    E-Print Network [OSTI]

    C. Alcock

    1997-02-13

    We present optical photometry of the eclipsing supersoft source, CAL87. These observations comprise long term data accumulated as a by-product of the MACHO Project, and high speed white light photometry of a single eclipse. We (i) derive an improved ephemeris of To = HJD 2450111.5144(3) + 0.44267714(6)E for the time of minimum light, (ii) find the eclipse structure to be stable over a period of 4 years, and (iii) investigate the colour variation as a function of orbital phase. The resolution afforded by the high speed nature of the white light observations enables us to see new structure in the light curve morphology.

  7. Supernova Remnants in the Magellanic Clouds. VI. The DEML316 Supernova Remnants

    E-Print Network [OSTI]

    R. M. Williams; Y. -H. Chu

    2005-09-22

    The DEML316 system contains two shells, both with the characteristic signatures of supernova remnants (SNRs). We analyze Chandra and XMM-Newton data for DEML316, investigating its spatial and spectral X-ray features. Our Chandra observations resolve the structure of the northeastern SNR (Shell A) as a bright inner ring and a set of "arcs" surrounded by fainter diffuse emission. The spectrum is well fit by a thermal plasma model with temperature ~1.4 keV; we do not find significant spectral differences for different regions of this SNR. The southwestern SNR (Shell B) exhibits an irregular X-ray outline, with a brighter interior ring of emission including a bright knot of emission. Overall the emission of the SNR is well described by a thermal plasma of temperature ~0.6 keV. The Bright Knot, however, is spectrally distinct from the rest of the SNR, requiring the addition of a high-energy spectral component consistent with a power-law spectrum of photon index 1.6--1.8. We confirm the findings of Nishiuchi et al. (2001) that the spectra of these shells are notably different, with Shell A requiring a high iron abundance for a good spectral fit, implying a Type Ia origin. We further explicitly compare abundance ratios to model predictions for Type Ia and Type II supernovae. The low ratios for Shell A (O/Fe of 1.5 and Ne/Fe of 0.2) and the high ratios for Shell B (O/Fe of 30--130 and Ne/Fe of 8--16) are consistent with Type Ia and Type II origins, respectively. The difference between the SNR progenitor types casts some doubt on the suggestion that these SNRs are interacting with one another.

  8. The Near-infrared Period-luminosity Relations of Cepheids in the Large Magellanic Cloud 

    E-Print Network [OSTI]

    Mahzooni, Salma

    2011-08-08

    supernovae and the Surface Brightness Fluctuations method. Important cross-checks of the Cepheid distances to nearby galaxies can be done using the Tip of the Red Giant Branch method. A promising 7 new technique involving radio observations of masers...

  9. Wolf-Rayet stars in the Small Magellanic Cloud: I. Analysis of the single WN stars

    E-Print Network [OSTI]

    Hainich, R; Todt, H; Shenar, T; Sander, A; Hamann, W -R

    2015-01-01

    Wolf-Rayet (WR) stars have a severe impact on their environments owing to their strong ionizing radiation fields and powerful stellar winds. Since these winds are considered to be driven by radiation pressure, it is theoretically expected that the degree of the wind mass-loss depends on the initial metallicity of WR stars. Following our comprehensive studies of WR stars in the Milky Way, M31, and the LMC, we derive stellar parameters and mass-loss rates for all seven putatively single WN stars known in the SMC. Based on these data, we discuss the impact of a low-metallicity environment on the mass loss and evolution of WR stars. The quantitative analysis of the WN stars is performed with the Potsdam Wolf-Rayet (PoWR) model atmosphere code. The physical properties of our program stars are obtained from fitting synthetic spectra to multi-band observations. In all SMC WN stars, a considerable surface hydrogen abundance is detectable. The majority of these objects have stellar temperatures exceeding 75 kK, while ...

  10. On the population of X-ray supernova remnants in the Large Magellanic Cloud

    E-Print Network [OSTI]

    Maggi, P; Kavanagh, P J; Sasaki, M; Bozzetto, L M; Filipovi?, M D; Vasilopoulos, G; Pietsch, W; Points, S D; Chu, Y -H; Dickel, J; Ehle, M; Williams, R; Greiner, J

    2015-01-01

    We present a comprehensive X-ray study of the population of supernova remnants (SNRs) in the LMC. Using primarily XMM-Newton, we conduct a systematic spectral analysis of LMC SNRs to gain new insights on their evolution and the interplay with their host galaxy. We combine all the archival XMM observations of the LMC with those of our Very Large Programme survey. We produce X-ray images and spectra of 51 SNRs, out of a list of 59. Using a careful modeling of the background, we consistently analyse all the X-ray spectra and measure temperatures, luminosities, and chemical compositions. We investigate the spatial distribution of SNRs in the LMC and the connection with their environment, characterised by various SFHs. We tentatively type all LMC SNRs to constrain the ratio of core-collapse to type Ia SN rates in the LMC. We compare the X-ray-derived column densities to HI maps to probing the 3D structure of the LMC. This work provides the first homogeneous catalogue of X-ray spectral properties of LMC SNRs. It of...

  11. Identification of a jet-driven supernova remnant in the Small Magellanic

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfate Reducing(Journal Article)lasers(Journal Article) |SciTech ConnectIWTUSciTechCloud: Possible

  12. Magellan additional information | U.S. DOE Office of Science (SC)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesse BergkampCentermillion toMSDS on the internet The OfficeSearchMDE

  13. Demonstration house and resource center for appropriate technology. Final report, October 1, 1981-June 30, 1982

    SciTech Connect (OSTI)

    Not Available

    1983-04-18

    The Thoreau Center was developed as an effective demonstration for appropriate technology in Des Moines, Iowa. Efforts included: (1) physical improvements for which funding was granted: insulation of walls of the brick house from inside, and painting of walls with vapor-barrier paint; construction of a batch-type or breadbox solar hot water pre-heating system; construction of a variety of window insulation treatments for all windows; evaluation of the Center's energy use over a three year (4th year included as well) period; insulation of basement (office) space using several alternative methods; investigation of various projects, such as the originally proposed greywater system and ceiling fans; and continued emphasis on winterization and low-cost conservation methods such as caulking, weatherstripping, waterheater insulation, lowered thermostat, etc. Services of the Resource Center Library which were supported through grant funds are summarized.

  14. Informations pratiques : Inscription pralable obligatoire pour une ou deux excursions (matin et/ou aprs-midi) sur www.gm.univ-montp2.fr Fin prvue des excursions, 12h et/ou 17h. Les dplacements se font en vhicules particuliers. Le pique-nique "tir du sac"

    E-Print Network [OSTI]

    Cattin, Rodolphe

    /ou après-midi) sur www.gm.univ-montp2.fr Fin prévue des excursions, 12h et/ou 17h. Les déplacements se font. Organisateurs : Comité Régional AIPT. http://www.gm.univ-montp2.fr Comité Languedoc-Roussillon Pour clôturer l inscription sur http://www.gm.univ-montp2.fr YA-T-IL DU P�TROLE SOUS LES RUFFES DU SALAGOU ? Exploration

  15. Analyse des Donnees Travaux Pratiques 2

    E-Print Network [OSTI]

    Gadat, Sébastien

    `eque correspondante dans R : library(MASS) De m^eme, les algorithmes de classification ascendante hi´erarchique que biblioth`eque on proc`ede donc de la m^eme mani`ere que pr´ec´edemment : library(cluster) Remarque : Si calculer. Que peut-on en conclure ? Remarque : on pourra utiliser la commande dist() 2.2.3 Classification

  16. Habilitation Diriger des Recherches Prsente par

    E-Print Network [OSTI]

    Boyer, Edmond

    ...................................................................................................... 17 Mixed sensor noise evaluation de l'Etat Condensé ­ CEA Saclay Superconducting-magnetoresistive sensor: Reaching the femtotesla .................................................................................................................................5 Magnetic sensors

  17. Caractristiques granulomtriques et morphologiques des particules

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    .00594811.2079m2 0.00907110.10087m3 NA42.466Chisq NA0.88211R 232 tel-00089234,version1-16Aug2006 #12;Billes 1

  18. Prsente L' INSTITUT NATIONAL DES SCIENCES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    et sociale d'une nation, ou encore Alan Turing (1912-1954) sous la direction duquel les calculateurs programmes et d'imprimantes. Sans Alan Turing, Robinson et Colossus, mon travail durant ces

  19. Evaluation des impacts environnementaux de filires nergie

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ACHARD Professeur Emérite, Université de Savoie Président Lucien WALD Directeur de Recherches, MINES reconnaissante pour le soutien scientifique apporté par Gilbert Achard du LOCIE, Professeur Emérite, qui a été, Pascale Schwab-Castella, Marcel Gomez-Ferrer, Julia Steinberger et Didier Beloin- Saint-Pierre. La

  20. Fermilab Today | Experiment Profiles Archive | DES & DECam

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    their shapes, how galaxies cluster and the brightness of exploding stars called supernovae. WHY IS THIS EXPERIMENT NEEDED NOW? Research during the last decade using different...

  1. INTERPRTATION QUANTIQUE DES DIVERSES RSONANCES OBSERVES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    of resonances appearing on the light scattered by an atom interacting with a radiofrequency field (longitudinal at different orders, it is possible to explain the radiative shifts and broadenings of the resonances. LE optiques et les photons de radiofrequence et permet d'interpr6ter simultanement les deux types de resonance

  2. Fondements de la conception des ordinateurs

    E-Print Network [OSTI]

    Aboulhamid, El Mostapha

    , RAID, ... · Price: Lower costs due to ... ­ Simpler development » CMOS VLSI: smaller systems, fewer components ­ Higher volumes » CMOS VLSI : same dev. cost 10,000 vs. 10,000,000 units ­ Lower margins by class market forces · Tremendous organizational innovation relative to established ISA abstractions · Many New

  3. Fondements de la conception des ordinateurs

    E-Print Network [OSTI]

    Aboulhamid, El Mostapha

    low-end » RISC, superscalar, RAID, ... · Price: Lower costs due to ... ­ Simpler development » CMOS / server / laptop space ­ dictated by powerful market forces · Tremendous organizational innovation dominates older technologies (TTL, ECL) in cost AND performance ­ Computer architecture advances improves

  4. Classement des matriaux Cours ESPCI -Charmet

    E-Print Network [OSTI]

    Dalloz-Dubrujeaud, Blanche

    400 MPa froid en fonderie, ducitle $ mise en forme à froid ou à chaud #12;#12;Alliages de Cu #12;Alliages de Zn T° de fusion basse (420°C)! Electro-négativité élevée/acier $ galvanisation Résistance à la corrosion

  5. Facult des sciences Bnficiaire Titre du projet

    E-Print Network [OSTI]

    Halazonetis, Thanos

    : hydrogen storage and superionic conductivity. 165'020 01.10.2010 36 Citi Sandra The functions of the tight - Physics at the Large Hadron Collider (LHC) at CERN 296'000 01.04.2010 12 Clark Allan Geoffrey High division 675'000 01.05.2010 36 Gonzalez-Gaitan Marcos Super-resolution life cell microscopy: membrane

  6. Emilie LLEDO ROMERO 18, alle des berchres.

    E-Print Network [OSTI]

    Cardeñosa, Jesús

    Luisant Opción Contabilidad y Finanzas de las Empresas. EXPERIENCIA PROFESIONAL 2009 Oficina Comercial de activos (Trabajo 2 meses) Auxiliar de contabilidad (París) Realización de pagos y facturas en el programa subcategorías de los productos por el sitio web, realicé tareas de contabilidad, elaboré estadísticas, presté

  7. UNIVERSITE DE MONS FACULTE DES SCIENCES

    E-Print Network [OSTI]

    Rasmont, Pierre

    'interaction entre l'abeille spécialiste Andrena vaga (Panzer) (Hymenoptera, Andrenidae) et le genre Salix L) (Hymenoptera, Andrenidae) et le genre Salix L. (Salicaceae) ­ 2012 2 Remerciements Par ces quelques lignes, je genre Salix L. (Salicaceae) ­ 2012 3 Je tiens à exprimer mes remerciements à Messieurs Gilles MAHE et

  8. UNIVERSITE DE MONS FACULTE DES SCIENCES

    E-Print Network [OSTI]

    Rasmont, Pierre

    samples), showing great qualitative and/or quantitative differences in the secretions of canariensis terrestris (L.) - Impacts on the speciation Audrey Coppée Thesis submitted in fulfilment of the degree

  9. dpasser les frontires Direction des ressources humaines

    E-Print Network [OSTI]

    van Tiggelen, Bart

    ........................................................................................................................................................12 II.2.3 Les infirmiers................................................................

  10. dpasser les frontires Direction des ressources humaines

    E-Print Network [OSTI]

    van Tiggelen, Bart

    ................................................................................................................12 II.2.3 Les infirmiers.................................................................

  11. COLE CENTRALE DES ARTS ET MANUFACTURES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Génie Industriel SUJET: Home Health Care Operations Management: Applying the districting approach'hospitalisation complète est de raccourcir les séjours hospitaliers voire même de les éviter en vue de remédier à l

  12. ACADEMrrE ROUMAThffi REVUE ROUMAINE DES

    E-Print Network [OSTI]

    Baica, Malvina

    be used as cogeneration plants; - Are not adequate to operate with a variable load, they practically thermoenergetique NUCLEAR POWER PLANTS FOR PEAK LOADS IN POWER SYSTEMS, USING THE HYDROGEN AS ENERGY AGENT MIRCEA. In this paper are analysed the technical possibilities of Nuclear Power Plants to participate at in a peak load

  13. Histoire philosophique des deux Indes, 1770

    E-Print Network [OSTI]

    Raynal

    2006-11-08

    . Half-title:] HITOIRE / DU / STADHOUDERAT. 12? (164 x 105 mm cut) ?4 A–O8/4 P8; pp. viii, 168, [16]; $4, 2 signed with roman numerals to the right; quire catchwords. Pp. [i] half-title, [ii] blank, [iii] title, [iv] blank, v–vij A Monsieur le Marquis... ; $4 signed with roman numerals to the right ($1 signed with asterisk preceding the signature letter); on direction line $1: Tome I.; quire catchwords. Frontispiece signed Cochin filius inv. J. Daullé Sculp. Pp. [a4 A–N8 O8 ({+-}O6) P–2B8 2C4(-2C4...

  14. FACULT DES SCIENCES Dpartement d'informatique

    E-Print Network [OSTI]

    Cordier, Frederic

    physique 2004 Thèse N° 3501 THÈSE Real-time Animation of Dressed Virtual Humans #12;Acknowledgments is that they are slow at computation, making the simulation of dressed humans hardly achievable. In this dissertation

  15. Titel des Moduls: Leistungselektronik in der modernen

    E-Print Network [OSTI]

    Wichmann, Felix

    Se) Leistungselektronik für erneuerbare Energien und Anwendungen der Energieversorgung VL 2 3 P SoSe Smart Grids erneuerbare Energien und Anwendungen der Energieversorgung (2 SWS)-Pflicht Präsenzzeit 15*2 30 Nachbereitung in der Lage, leistungselektronische Aufgaben im Bereich der erneuerbaren Energien, deren Netzintegration

  16. Titel des Moduls: Electric Energy Networks

    E-Print Network [OSTI]

    Wichmann, Felix

    Anteil erneuerbarer Energien kommt den Netzen eine immer wichtigere Rolle in der Systemintegration zu

  17. Financiere des Energies | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX E LISTStar2-0057-EA Jump to:ofEnia SpA JumpGmbHFerrisFillmore City

  18. Chemical Abundances in Twelve Red Giants of the Large Magellanic Cloud from High-Resolution Infrared Spectroscopy

    E-Print Network [OSTI]

    V. V. Smith; K. H. Hinkle; K. Cunha; B. Plez; D. L. Lambert; C. A. Pilachowski; B. Barbuy; J. Melendez; S. Balachandran; M. S. Bessell; D. P. Geisler; J. E. Hesser; C. Winge

    2002-08-22

    High-resolution infrared spectra (R=50,000) have been obtained for twelve red-giant members of the LMC with the Gemini South 8.3-meter telescope plus Phoenix spectrometer. Quantitative chemical abundances of carbon-12, carbon-13, nitrogen-14, and oxygen-16 were derived from molecular lines of CO, CN, and OH, while sodium, scandium, titanium, and iron abundances were derived from neutral atomic lines. The LMC giants have masses from about 1 to 4 solar masses and span a metallicity range from [Fe/H]= -1.1 to -0.3. The program red giants all show evidence of first dredge-up mixing, with low 12C/13C ratios, and low 12C correlated with high 14N abundances. Comparisons of the oxygen-to-iron ratios in the LMC and the Galaxy indicate that the trend of [O/Fe] versus [Fe/H] in the LMC falls about 0.2 dex below the Galactic trend. Such an offset can be modeled as due to an overall lower rate of supernovae per unit mass in the LMC relative to the Galaxy, as well as a slightly lower ratio of supernovae of type II to supernovae of type Ia.

  19. High-resolution studies of charge exchange in supernova remnants with Magellan, XMM-Newton, and Micro-X

    E-Print Network [OSTI]

    Heine, Sarah Nicole Trowbridge

    2014-01-01

    Charge exchange, the semi-resonant transfer of an electron from a neutral atom to an excited state in an energetic ion, can occur in plasmas where energetic ions are incident on a cold, at least partially neutral gas. ...

  20. Optical Multi-Channel Intensity Interferometry - or: How To Resolve O-Stars in the Magellanic Clouds

    E-Print Network [OSTI]

    Trippe, Sascha; Lee, Bangwon; Choi, Changsu; Oh, Junghwan; Lee, Taeseok; Yoon, Sung-Chul; Im, Myungshin; Park, Yong-Sun

    2014-01-01

    Intensity interferometry, based on the Hanbury Brown-Twiss effect, is a simple and inexpensive method for optical interferometry at microarcsecond angular resolutions; its use in astronomy was abandoned in the 1970s because of low sensitivity. Motivated by recent technical developments, we argue that the sensitivity of large modern intensity interferometers can be improved by factors up to approximately 25,000, corresponding to 11 photometric magnitudes, compared to the pioneering Narrabri Stellar Interferometer. This is made possible by (i) using avalanche photodiodes (APD) as light detectors, (ii) distributing the light received from the source over multiple independent spectral channels, and (iii) use of arrays composed of multiple large light collectors. Our approach permits the construction of large (with baselines ranging from few kilometers to intercontinental distances) optical interferometers at the cost of (very) long-baseline radio interferometers. Realistic intensity interferometer designs are abl...

  1. Properties of a Proper-Motion Selected Sample of Giants in the Small Magellanic Cloud near NGC 121

    E-Print Network [OSTI]

    Nicholas B. Suntzeff; Alistair R. Walker; Verne V. Smith; Robert P. Kraft; Arnold Klemola; Peter B. Stetson

    1998-09-28

    We present both low and high-dispersion abundance analyses of giants drawn from the zero proper motion sample near NGC 121. For the sample of 35 stars, the mean metallicity of the SMC field near NGC 121 is [Fe/H]=-1.3 with a real dispersion of 0.4 dex. The most metal-rich stars are at -0.5 dex and the most metal-poor stars at -2.1 dex. The velocity dispersion of the sample is 25 km/s. The dispersion of various kinematic samples in the SMC is independent of age. The RGB colors are consistent with Galactic globular clusters of similar metallicity. The field population, however, does not have an extended blue horizontal branch, and the main sequence turnoff extends 1 magnitude brighter than the turnoff in M5. Evidently active star formation in this region started roughly at the age of the Galactic globular cluster M5 and extended for about 6 Gyrs, and then stopped.

  2. A view of Large Magellanic Cloud HII regions N159, N132, and N166 through the 345 GHz window

    E-Print Network [OSTI]

    Paron, S; Fariña, C; Cunningham, M; Jones, P A; Rubio, M

    2015-01-01

    We present results obtained towards the HII regions N159, N166, and N132 from the emission of several molecular lines in the 345 GHz window. Using ASTE we mapped a 2.4' $\\times$ 2.4' region towards the molecular cloud N159-W in the $^{13}$CO J=3-2 line and observed several molecular lines at an IR peak very close to a massive young stellar object. $^{12}$CO and $^{13}$CO J=3-2 were observed towards two positions in N166 and one position in N132. The $^{13}$CO J=3-2 map of the N159-W cloud shows that the molecular peak is shifted southwest compared to the peak of the IR emission. Towards the IR peak we detected emission from HCN, HNC, HCO$^{+}$, C$_{2}$H J=4-3, CS J=7-6, and tentatively C$^{18}$O J=3-2. This is the first reported detection of these molecular lines in N159-W. The analysis of the C$_{2}$H line yields more evidence supporting that the chemistry involving this molecular species in compact and/or UCHII regions in the LMC should be similar to that in Galactic ones. A non-LTE study of the CO emission...

  3. LA DIFFUSION DES NEUTRONS Physique des Solides, Universit Paris-Sud, 91405 Orsay, France

    E-Print Network [OSTI]

    Boyer, Edmond

    , topographie de Lang aux neutrons. Abstract. 2014 The physical basis of the scattering of neutrons is discussed. In particular, the energy spectrum of the inelastically scattered neutrons may be determined experimentally. The possibilities of the neutron scattering due to their weak absorption coefficient in matter

  4. Centrales au gaz et Energies renouvelables: comparer des pommes avec des pommes

    SciTech Connect (OSTI)

    Bolinger, Mark; Wiser, Ryan; Golove, William

    2003-10-20

    The fundamental conclusion that we draw from this analysis is that one should not to base itself blindly on forecasts prices of natural gas when one compare contracts at price fixes with producers of renewable energy with contracts at variable prices with promoters power stations with gas. Indeed, forecasts of the prices of gas do not succeed not to enter the associated costs with the covering of the risk, that they are connected to the negative pressure against the cover, with the CAPM, with costs of transaction or with unspecified combination of three. Thus, insofar as price stability to length term is developed, better way of comparing the two choices would be to have recourse to the data on the prices in the long term natural gas, and not with forecasts of the prices. During three last years at least, the use of these prices in the long term would have besides license to correct a methodological error who, obviously, seem to have supported unduly, and of relatively important way, power stations with natural gas compared to their competitors of renewable energies.

  5. DES Chapter 4DES Chapter 4 Estimating the Value of ACME

    E-Print Network [OSTI]

    Schubart, Christoph

    Estimate cost of capital (WACC) Debt Equity P j t fi i l t t t d FCFProject financial statements and FCF ACME has debt and equity The cost of capital for each type of financing depends on it risk. 12, 2nd. Ed.p , Using the Debt Yield as Its Cost of Capital Page 388:g As we emphasize

  6. Recherche De Correlations Temporelles Des Muons Cosmiques Avec Macro Et Perte D'Energie Des Nuclearites

    E-Print Network [OSTI]

    Moussa, A

    2009-01-01

    The first parts of the thesis recalls the main features of the large MACRO experiment at the underground Gran Sasso Laboratory. It then describes the atmospheric muons measured by the experiment and the selection criteria to obtain and analyze a large sample of cosmic muons. The time series of MACRO muons was analyzed with two complementary approaches: search for the occurrence of bursts of muon events and search for periodicities in the muon time distribution. The Scan Statistics method was used in the first case and the Lomb-Scargle spectral analysis in the second case. The two techniques complete early analyses performed with "folding" methods. It is confirmed that the seasonal variation is the dominant periodic variation, and one also confirms the solar diurnal and sidereal modulations. A separate study concerns the analysis of the energy losses of the hypothetical Nuclearites in different materials and detectors; their importance for the searches performed by the MACRO and the SLIM experiments is discuss...

  7. UNIVERSIT DE MONTRAL PRISE EN COMPTE DES CONDITIONS DES MATRIAUX ET DU COUPLAGE

    E-Print Network [OSTI]

    Meunier, Michel

    externe du jury. Je remercie Bronwyn Hyland et Jeremy Pencer, chercheurs aux Laboratoires de Chalk River d

  8. Problmes rencontrs pendant l'u4lisa4on des donnes ARGO pour des analyses

    E-Print Network [OSTI]

    Lherminier, Pascale

    , dac: aoml, POS_QC:1 ID: 7900053, type: SOLOIR_SBE_SL770 , dac: aoml, POS_QC:1 ID: 7900057, type: SOLOIR_SBE_SL763 , dac: aoml, POS_QC:1 ID: 1900601, type: PROVOR Profiling Float CT, dac: coriolis, POS_QC:1 · Posi4ons aberrantes WMO number POSITION

  9. HABILITATION DIRIGER DES RECHERCHES COLE DES HAUTES TUDES EN SCIENCES SOCIALES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    ..........................................107 D. REBONDS : ORGANISATIONS INTERNATIONALES ET MONDES INFIRMIERS 2. Les mondes infirmiers 1850

  10. LA CONDUCTIVIT LECTRIQUE DES COUCHES MICROCRISTALLINES DES MTAUX A CONDUCTION MIXTE (BERYLLIUM ET PLOMB)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    (BERYLLIUM ET PLOMB) Par R. GRIGOROVICI, A. DÉVÉNYI, T. BOTILÅ, C. RUSU et A. VANCU, Institut de Physique de continuous beryllium and lead films deposited by vacuum evaporation have a negative temperature coefficient connue. Le beryllium nous a semblé le métal le plus indiqué pour ce dessein, car il satisfait aux

  11. FACULT DES SCIENCES -Dpartement de biologie Horaire des cours d't 2015

    E-Print Network [OSTI]

    Vellend, Mark

    final) ECL 403 TP - Écologie aquatique Leroux, Carmelle 28-avr 28-avr mardi 09h30 à 10h20 D3-2038 Première rencontre obligatoire ECL 403 30-avr 14-mai jeudi 13h30 à 16h20 D8-2010 ECL 403 21-mai 23-mai je, ve et sa 08h30 à 16h20 terrain ECL 403 28-mai 11-juin jeudi 13h30 à 16h20 D7-2009 ECL 403 (pas d

  12. Observation and Confirmation of Six Strong Lensing Systems in The Dark Energy Survey Science Verification Data

    E-Print Network [OSTI]

    Nord, B; Lin, H; Diehl, H T; Helsby, J; Kuropatkin, N; Amara, A; Collett, T; Allam, S; Caminha, G; De Bom, C; Desai, S; Dúmet-Montoya, H; Pereira, M Elidaiana da S; Finley, D A; Flaugher, B; Furlanetto, C; Gaitsch, H; Gill, M; Merritt, K W; More, A; Tucker, D; Rykoff, E S; Rozo, E; Abdalla, F B; Agnello, A; Auger, M; Brunner, R J; Kind, M Carrasco; Castander, F J; Cunha, C E; da Costa, L N; Foley, R; Gerdes, D W; Glazebrook, K; Gschwend, J; Hartley, W; Kessler, R; Lagattuta, D; Lewis, G; Maia, M A G; Makler, M; Menanteau, F; Niernberg, A; Scolnic, D; Vieira, J D; Gramillano, R; Abbott, T M C; Banerji, M; Benoit-Lévy, A; Brooks, D; Burke, D L; Capozzi, D; Rosell, A Carnero; Carretero, J; D'Andrea, C B; Dietrich, J P; Doel, P; Evrard, A E; Frieman, J; Gaztanaga, E; Gruen, D; Honscheid, K; James, D J; Kuehn, K; Li, T S; Lima, M; Marshall, J L; Martini, P; Melchior, P; Miquel, R; Neilsen, E; Nichol, R C; Ogando, R; Plazas, A A; Romer, A K; Sako, M; Sanchez, E; Scarpine, V; Schubnell, M; Sevilla-Noarbe, I; Smith, R C; Soares-Santos, M; Sobreira, F; Suchyta, E; Swanson, M E C; Tarle, G; Thaler, J; Walker, A R; Wester, W; Zhang, Y

    2015-01-01

    We report the observation and confirmation of the first group- and cluster-scale strong gravitational lensing systems found in Dark Energy Survey (DES) data. Through visual inspection of data from the Science Verification (SV) season, we identified 53 candidate systems. We then obtained spectroscopic follow-up of 21 candidates using the Gemini Multi-Object Spectrograph (GMOS) at the Gemini South telescope and the Inamori-Magellan Areal Camera and Spectrograph (IMACS) at the Magellan/Baade telescope. With this follow-up, we confirmed six candidates as gravitational lenses: Three of the systems are newly discovered, and the remaining three were previously known. Of the 21 observed candidates, the remaining 15 were either not detected in spectroscopic observations, were observed and did not exhibit continuum emission (or spectral features), or were ruled out as lensing systems. The confirmed sample consists of one group-scale and five galaxy cluster-scale lenses. The lensed sources range in redshift z ~ 0.80-3.2...

  13. Technology Solutions Case Study: Improving the Field Performance of Natural Gas Furnaces

    SciTech Connect (OSTI)

    2013-11-01

    The objective of this project is to examine the impact that common installation practices and age-induced equipment degradation may have on the installed performance of natural gas furnaces, as measured by steady-state efficiency and AFUE. PARR identified twelve furnaces of various ages and efficiencies that were operating in residential homes in the Des Moines Iowa metropolitan area and worked with a local HVAC contractor to retrieve them and test them for steady-state efficiency and AFUE in the lab. Prior to removal, system airflow, static pressure, equipment temperature rise, and flue loss measurements were recorded for each furnace. After removal from the field the furnaces were transported to the Gas Technology Institute (GTI) laboratory, where PARR conducted steady-state efficiency and AFUE testing. The test results show that steady-state efficiency in the field was 6.4% lower than that measured for the same furnaces under standard conditions in the lab, which included tuning the furnace input and air flow rate. Comparing AFUE measured under ASHRAE standard conditions with the label value shows no reduction in efficiency for the furnaces in this study over their 15 to 24 years of operation when tuned to standard conditions. Further analysis of the data showed no significant correlation between efficiency change and the age or the rated efficiency of the furnace.

  14. Improving the Field Performance of Natural Gas Furnaces, Chicago, Illinois (Fact Sheet)

    SciTech Connect (OSTI)

    Rothgeb, S.; Brand, L.

    2013-11-01

    The objective of this project is to examine the impact that common installation practices and age-induced equipment degradation may have on the installed performance of natural gas furnaces, as measured by steady-state efficiency and AFUE. PARR identified twelve furnaces of various ages and efficiencies that were operating in residential homes in the Des Moines Iowa metropolitan area and worked with a local HVAC contractor to retrieve them and test them for steady-state efficiency and AFUE in the lab. Prior to removal, system airflow, static pressure, equipment temperature rise, and flue loss measurements were recorded for each furnace. After removal from the field the furnaces were transported to the Gas Technology Institute (GTI) laboratory, where PARR conducted steady-state efficiency and AFUE testing. The test results show that steady-state efficiency in the field was 6.4% lower than that measured for the same furnaces under standard conditions in the lab, which included tuning the furnace input and air flow rate. Comparing AFUE measured under ASHRAE standard conditions with the label value shows no reduction in efficiency for the furnaces in this study over their 15 to 24 years of operation when tuned to standard conditions. Further analysis of the data showed no significant correlation between efficiency change and the age or the rated efficiency of the furnace.

  15. Biomass power for rural development. Quarterly report, October 3, 1998--January 1, 1999

    SciTech Connect (OSTI)

    Cooper, J.T.

    1999-02-01

    Information and education activities for this quarter include both the monthly progress activities with some copies of materials developed and a copy of the annual report prepared for the Leopold Center for Sustainable Agriculture. The Leopold Center is a project partner and the primary sponsor of the information and education activities. The Leopold annual report references many prepared documents and assorted presentation materials. The Energy and Geological Resources Division of the Iowa Department of Natural Resources sponsors a meeting four times a year in order to bring members of the Iowa biomass energy community together to share information. In this quarter the Stakeholders meeting was held on October 21, 1998, in Des Moines Iowa. The first phase of the Geographic Information System (GIS) efforts have been completed and a final report with a map presentation of materials will be included in the next Quarterly Report. A meeting with Ed Gray of The Antares Group and project staff/cooperators was held October 23, 1998. The authors discussed the Niagara Project and the efforts to value the biomass material and partner contributions. Niagara has identified a value to the grid support capabilities of the dispersed generation.

  16. Lessons from Iowa : development of a 270 megawatt compressed air energy storage project in midwest Independent System Operator : a study for the DOE Energy Storage Systems Program.

    SciTech Connect (OSTI)

    Holst, Kent; Huff, Georgianne; Schulte, Robert H.; Critelli, Nicholas

    2012-01-01

    The Iowa Stored Energy Park was an innovative, 270 Megawatt, $400 million compressed air energy storage (CAES) project proposed for in-service near Des Moines, Iowa, in 2015. After eight years in development the project was terminated because of site geological limitations. However, much was learned in the development process regarding what it takes to do a utility-scale, bulk energy storage facility and coordinate it with regional renewable wind energy resources in an Independent System Operator (ISO) marketplace. Lessons include the costs and long-term economics of a CAES facility compared to conventional natural gas-fired generation alternatives; market, legislative, and contract issues related to enabling energy storage in an ISO market; the importance of due diligence in project management; and community relations and marketing for siting of large energy projects. Although many of the lessons relate to CAES applications in particular, most of the lessons learned are independent of site location or geology, or even the particular energy storage technology involved.

  17. Communiqu de presse Paris, le 10 avril 2015

    E-Print Network [OSTI]

    van Tiggelen, Bart

    des ballons, des avions et des drones aux activités de préparation et de validation des missions démonstration de nouvelles technologies, ou encore les apports spécifiques des ballons, des avions et des drones

  18. Rectorat de l'acadmie de Paris Annexe 4 DP 7 DP 8

    E-Print Network [OSTI]

    Arleo, Angelo

    conditions Conditions requises INFIRMIER HORS CLASSE - au moins 1 an d'ancienneté dans le 1er échelon de la classe supérieure. 31.12.2014 Article 17 du décret n°2012-762 du 9 mai 2012 INFIRMIER DE CLASSE SUPERIEURE - au moins 9 ans de services effectifs dans un corps ou cadre d'emplois d'infirmiers de catégorie

  19. Universitt des Saarlandes Fachrichtung 6.1 Mathematik

    E-Print Network [OSTI]

    segmentation algorithms: Left: SIFT features [12] found in two consecu- tive frames are depicted. The green the corresponding feature position in the last frame. Here, the tea box was to be tracked. As can be seen, no SIFT feature has been found that is on the tea box for these two frames, making a tracking with SIFT

  20. Bachelor-, Master-und Doktorandenseminar des Instituts fr Informatik

    E-Print Network [OSTI]

    Zachmann, Gabriel

    wird. Die Wahl fällt dabei auf die Integration von CMMI-DEV und ITIL bzw. ITIL Service Design. Zur Schnittstellenbereiche vorgestellt, an denen sich Prozessgebiete von CMMI-DEV und ITIL Service Design berühren. Daraufhin