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Sample records for moines ia midamerican

  1. 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.

  2. MidAmerican Energy Commercial Rebate Program

    Broader source: Energy.gov [DOE]

    MidAmerican Energy offers a variety of incentives for commercial customers to improve the energy efficiency of facilities. Rebates are generally available to both gas and electric customers....

  3. 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.

  4. MidAmerican Energy (Gas and Electric) - Commercial New Construction...

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

    Utility Administrator MidAmerican Energy Website http:www.midamericanenergy.comeeiabuscommnewconstruction.aspx State Iowa Program Type Rebate Program Rebate Amount...

  5. MidAmerican Energy (Gas)- Residential Energy Efficiency Rebate Programs

    Broader source: Energy.gov [DOE]

    MidAmerican Energy offers a variety of incentives for residential customers to improve the energy efficiency of eligible homes. The Residential Equipment Brochure on the program web site above...

  6. MidAmerican Energy (Electric)- Residential Energy Efficiency Rebate Programs

    Broader source: Energy.gov [DOE]

    MidAmerican Energy offers a variety of incentives for residential customers to improve the energy efficiency of eligible homes. The Iowa Energy Efficiency Rebate Information For Your Home brochure...

  7. MidAmerican Energy (Gas)- Residential Energy Efficiency Rebate Programs

    Broader source: Energy.gov [DOE]

    MidAmerican Energy offers basic energy efficiency incentives for residential customers in Nebraska. These incentives include gas heating equipment such as boilers, furnaces, and water heaters. Free...

  8. MidAmerican Energy (Gas and Electric) - Residential EnergyAdvantage...

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

    Utility Administrator MidAmerican Energy Website http:www.midamericanenergy.comeeiaresfinancing.aspx Expiration Date 12312012 State Iowa Program Type Loan Program...

  9. MidAmerican Energy (Electric)- Commercial EnergyAdvantage Rebate Program

    Broader source: Energy.gov [DOE]

    MidAmerican Energy offers a variety of incentives for commercial customers to improve the energy efficiency of facilities. Rebates are generally available to both gas and electric customers. ...

  10. MidAmerican Energy (Electric)- Municipal Solid-State Lighting Grant Program

    Broader source: Energy.gov [DOE]

    MidAmerican Energy offers grants to munipalities which implement solid-state roadway street lighting upgrades. Grants of up to $5,000 are available to participating entities who install eligible...

  11. MidAmerican Energy (Gas)- Commercial EnergyAdvantage Rebate Program

    Broader source: Energy.gov [DOE]

    MidAmerican Energy offers a variety of incentives for commercial natural gas customers to improve the energy efficiency of facilities. Rebates are generally available to both gas and electric...

  12. MidAmerican Energy (Gas and Electric)- Residential EnergyAdvantage Loan Program

    Broader source: Energy.gov [DOE]

    MidAmerican Energy's EnergyAdvantage Financing Program, in partnership with First American Bank, offers Iowa residential energy customers below-prime financing on installation of qualifying energy...

  13. MidAmerican Energy (Gas and Electric)- Commercial New Construction Energy-Efficiency Program

    Broader source: Energy.gov [DOE]

    MidAmerican Energy's Commercial New Construction Program offers incentives to businesses for energy-efficient construction and design of new or pre-existing buildings.  A minimum energy savings of...

  14. DOE - Office of Legacy Management -- Iowa Army Ammunition Plant - IA 02

    Office of Legacy Management (LM)

    Army Ammunition Plant - IA 02 FUSRAP Considered Sites Iowa Army Ammunition Plant, IA Alternate Name(s): Burlington Ordnance Plant Iowa Ordnance Plant Silas Mason Company IA.02-3 Location: Located in Township 70 North, Range 3 West, Section 32, 5th Principal Meridian, Des Moines County, Burlington, Iowa IA.02-1 IA.02-5 Historical Operations: Assembled nuclear weapons, primarily high explosive components and conducted explosives testing using the high explosive components and depleted uranium. AEC

  15. 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.

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

    Open Energy Info (EERE)

    This article is a stub. You can help OpenEI by expanding it. Des Moines is a city in King County, Washington. It falls under Washington's 9th congressional district.12...

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

    Open Energy Info (EERE)

    Hide Map This article is a stub. You can help OpenEI by expanding it. West Des Moines is a city in Dallas County and Polk County and Warren County, Iowa. It falls...

  18. 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.

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

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

    Department of Energy After 105 Years, Historic City Hall in West Des Moines, Iowa Goes Green After 105 Years, Historic City Hall in West Des Moines, Iowa Goes Green May 9, 2011 - 5:22pm Addthis The restored Historic City Hall building in West Des Moines' Valley Junction neighborhood. | Photo credit: Vicky Saylor The restored Historic City Hall building in West Des Moines' Valley Junction neighborhood. | Photo credit: Vicky Saylor April Saylor April Saylor Former Digital Outreach Strategist,

  20. Renewable Resources: a national catalog of model projects. Volume 2. Mid-American Solar Energy Complex Region

    SciTech Connect (OSTI)

    1980-07-01

    This compilation of diverse conservation and renewable energy projects across the United States was prepared through the enthusiastic participation of solar and alternate energy groups from every state and region. Compiled and edited by the Center for Renewable Resources, these projects reflect many levels of innovation and technical expertise. In many cases, a critique analysis is presented of how projects performed and of the institutional conditions associated with their success or failure. Some 2000 projects are included in this compilation; most have worked, some have not. Information about all is presented to aid learning from these experiences. The four volumes in this set are arranged in state sections by geographic region, coinciding with the four Regional Solar Energy Centers. The table of contents is organized by project category so that maximum cross-referencing may be obtained. This volume includes information on the Mid-American Solar Energy Complex Region. (WHK)

  1. Energy Secretary Moniz to Travel to Des Moines and Ames | The Ames

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

    Laboratory to Travel to Des Moines and Ames News Media Contact: (202) 586-4940 For Immediate Release: Wednesday, May 5, 2016 WASHINGTON - On Friday, Energy Secretary Ernest Moniz will travel to Des Moines, Iowa, where he will participate in a public stakeholder meeting on the second installment of the Quadrennial Energy Review (QER), an integrated study of the U.S. electricity system. Building on the first installment of the QER, which examined the key infrastructure needed for transmission,

  2. EECBG Success Story: After 105 Years, Historic City Hall in West Des Moines, Iowa Goes Green

    Broader source: Energy.gov [DOE]

    The city of West Des Moines, Iowa is used funding to renovate the Historic City Hall building located in Valley Junction, including the installation of four geothermal heating wells, a rooftop covered with vegetation, solar panels and permeable pavers to allow stormwater through to the soil below. Learn more.

  3. IA Experts Listing 2014 | Department of Energy

    Energy Savers [EERE]

    IA Experts Listing 2014 IA Experts Listing 2014 PDF icon IA Experts Listing January 2014 More Documents & Publications Office of International Affairs Organization Chart PI...

  4. Rolling Hills (IA) | Open Energy Information

    Open Energy Info (EERE)

    Rolling Hills (IA) Jump to: navigation, search Name Rolling Hills (IA) Facility Rolling Hills (IA) Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service...

  5. Steamboat IA Geothermal Facility | Open Energy Information

    Open Energy Info (EERE)

    IA Geothermal Facility Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Steamboat IA Geothermal Facility General Information Name Steamboat IA Geothermal Facility...

  6. Century Expansion (4Q07) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Energy Developer MidAmerican Energy Energy Purchaser MidAmerican Energy Location IA Coordinates 42.495789, -93.652368 Show Map Loading map... "minzoom":false,"mappings...

  7. Charles City (1Q08) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Developer MidAmerican Energy Energy Purchaser MidAmerican Energy Location Charles City IA Coordinates 43.049152, -92.734151 Show Map Loading map... "minzoom":false,"mappings...

  8. Adair Wind Farm II | Open Energy Information

    Open Energy Info (EERE)

    Energy Developer MidAmerican Energy Energy Purchaser MidAmerican Energy Location IA Coordinates 41.499234, -94.692628 Show Map Loading map... "minzoom":false,"mappings...

  9. Pomeroy III Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    MidAmerican Energy Energy Purchaser MidAmerican Energy Location Pocahontas County IA Coordinates 42.570484, -94.702506 Show Map Loading map... "minzoom":false,"mappings...

  10. Century Expansion (08) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Energy Developer MidAmerican Energy Energy Purchaser MidAmerican Energy Location IA Coordinates 42.504142, -93.656316 Show Map Loading map... "minzoom":false,"mappings...

  11. Carroll Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Developer MidAmerican Energy Energy Purchaser MidAmerican Energy Location Carroll County IA Coordinates 42.112208, -94.910631 Show Map Loading map... "minzoom":false,"mappings...

  12. Pomeroy IV Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Energy Developer MidAmerican Energy Energy Purchaser MidAmerican Energy Location Pomeroy IA Coordinates 42.570484, -94.702506 Show Map Loading map... "minzoom":false,"mappings...

  13. Charles City (2Q08) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Developer MidAmerican Energy Energy Purchaser MidAmerican Energy Location Charles City IA Coordinates 43.004101, -92.722392 Show Map Loading map... "minzoom":false,"mappings...

  14. Defining photometric peculiar type Ia supernovae

    SciTech Connect (OSTI)

    Gonzlez-Gaitn, S.; Pignata, G.; Frster, F.; Gutirrez, C. P.; Bufano, F.; Galbany, L.; Hamuy, M.; De Jaeger, T. [Millennium Institute of Astrophysics, Casilla 36-D, Santiago (Chile); Hsiao, E. Y.; Phillips, M. M. [Carnegie Observatories, Las Campanas Observatory, Casilla 601, La Serena (Chile); Folatelli, G. [Kavli Institute for the Physics and Mathematics of the Universe, the University of Tokyo, Kashiwa 277-8583 (Kavli IPMU, WPI) (Japan); Anderson, J. P., E-mail: sgonzale@das.uchile.cl [European Southern Observatory, Alonso de Crdova 3107, Casilla 19, Santiago (Chile)

    2014-11-10

    We present a new photometric identification technique for SN 1991bg-like type Ia supernovae (SNe Ia), i.e., objects with light curve characteristics such as later primary maxima and the absence of a secondary peak in redder filters. This method is capable of selecting this sub-group from the normal type Ia population. Furthermore, we find that recently identified peculiar sub-types such as SNe Iax and super-Chandrasekhar SNe Ia have photometric characteristics similar to 91bg-like SNe Ia, namely, the absence of secondary maxima and shoulders at longer wavelengths, and can also be classified with our technique. The similarity of these different SN Ia sub-groups perhaps suggests common physical conditions. This typing methodology permits the photometric identification of peculiar SNe Ia in large upcoming wide-field surveys either to study them further or to obtain a pure sample of normal SNe Ia for cosmological studies.

  15. Category:Mason, IA | Open Energy Information

    Open Energy Info (EERE)

    Mason, IA Jump to: navigation, search Go Back to PV Economics By Location Media in category "Mason, IA" The following 16 files are in this category, out of 16 total....

  16. Sweetspot: Near-infrared observations of 13 type Ia supernovae...

    Office of Scientific and Technical Information (OSTI)

    We present 13 Type Ia supernovae (SNe Ia) observed in the rest-frame near-infrared (NIR) ... Our sample includes two SNe Ia at z 0.09, which represent the most distant rest-frame ...

  17. Victory Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Invenergy Energy Purchaser MidAmerican Energy Location Carroll and Crawford Counties IA Coordinates 42.144715, -95.138183 Show Map Loading map... "minzoom":false,"mappings...

  18. Eclipse | Open Energy Information

    Open Energy Info (EERE)

    Clipper Windpower Development Company Energy Purchaser MidAmerican Energy Location Adair IA Coordinates 41.53604897, -94.65567112 Show Map Loading map... "minzoom":false,"mapp...

  19. Laurel | Open Energy Information

    Open Energy Info (EERE)

    RPM Access Wind Development Energy Purchaser MidAmerican Energy Location Haverhill IA Coordinates 41.89096884, -92.97214508 Show Map Loading map... "minzoom":false,"mapp...

  20. Morning Light | Open Energy Information

    Open Energy Info (EERE)

    Clipper Windpower Development Company Energy Purchaser MidAmerican Energy Location Casey IA Coordinates 41.44819506, -94.58280087 Show Map Loading map... "minzoom":false,"mapp...

  1. Intrepid Expansion Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Energy Energy Purchaser MidAmerican Energy Location Buena Vista & Sac Counties IA Coordinates 42.483311, -95.308807 Show Map Loading map... "minzoom":false,"mappings...

  2. Vienna | Open Energy Information

    Open Energy Info (EERE)

    RPM Access Wind Development Energy Purchaser MidAmerican Energy Location Marshalltown IA Coordinates 42.159909, -92.779639 Show Map Loading map... "minzoom":false,"mappings...

  3. Constraining Cosmic Evolution of Type Ia Supernovae (Journal...

    Office of Scientific and Technical Information (OSTI)

    Constraining Cosmic Evolution of Type Ia Supernovae Citation Details In-Document Search Title: Constraining Cosmic Evolution of Type Ia Supernovae We present the first large-scale...

  4. Constraining Cosmic Evolution of Type Ia Supernovae (Journal...

    Office of Scientific and Technical Information (OSTI)

    Constraining Cosmic Evolution of Type Ia Supernovae Citation Details In-Document Search Title: Constraining Cosmic Evolution of Type Ia Supernovae You are accessing a document...

  5. ASTRONOMY AND ASTROPHYSICS Dark Energy, Type Ia supernovae, radiative

    Office of Scientific and Technical Information (OSTI)

    of Oklahoma Univ. of Oklahoma 79 ASTRONOMY AND ASTROPHYSICS Dark Energy, Type Ia supernovae, radiative transfer, Dark Energy, Type Ia supernovae, radiative transfer, The...

  6. Type Ia Supernovae Project at NERSC

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

    of star called a white dwarf. The majority of SN Ia explosions occur far away from our galaxy; yet, due to their enormous intrinsic brightness, outshining billions of stars, we can...

  7. IA Blog Archive | Department of Energy

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

    "always be five years away." For four key clean energy technologies, that clean energy future has already arrived. August 21, 2013 IA Blog Archive ActOnClimate: Secretary...

  8. DOE - Office of Legacy Management -- Titus Metals - IA 04

    Office of Legacy Management (LM)

    Designated Name: Not Designated Alternate Name: None Location: Waterloo , Iowa IA.04-1 Evaluation Year: 1987 IA.04-2 Site Operations: Extruded uranium billets to produce fuel ...

  9. "Utility Characteristics",,,,,,"Number AMR- Automated Meter Reading...

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

    ....",0,".",".",".",".",0 2014,1,471,"Amana Society Service Co","IA","Final",177,5,".",".",18... 2014,1,12341,"MidAmerican Energy Co","IA","Final",561054,87577,453,0,64908...

  10. "Utility Characteristics",,,,,,"Number AMR- Automated Meter Reading...

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

    ...3323,".",".",".",".",0 2016,1,471,"Amana Society Service Co","IA","Preliminary",704,180,1,... 2016,1,12341,"MidAmerican Energy Co","IA","Preliminary",571337,90705,646,0...

  11. "Utility Characteristics",,,,,,"Number AMR- Automated Meter Reading...

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

    ...2242,".",".",".",".",0 2015,1,471,"Amana Society Service Co","IA","Preliminary",516,61,0,0... 2015,1,12341,"MidAmerican Energy Co","IA","Preliminary",565871,89165,618,0...

  12. UTILITY_ID","UTILNAME","STATE_CODE","YEAR","MONTH","RES_REV ...

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

    ...,92986.022,1106028.081,427520 471,"Amana Society Service Co","IA",2011,1,86,687,709,83,720...,104340,1293080,483884 12341,"MidAmerican Energy Co","IA",2011,1,45419.941,606535.866,5501...

  13. UTILITY CHARATERISTICS",,,,,,,"RESIDENTIAL",,,"COMMERCIAL",,...

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

    ...055,1197718.168,433523 2014,1,471,"Amana Society Service Co","IA","Investor ... 2014,1,12341,"MidAmerican Energy Co","IA","Investor Owned","Final",51877.2...

  14. UTILITY CHARACTERISTICS",,,,,,"RESIDENTIAL",,,"COMMERCIAL",,...

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

    ....04,1144493.302,434617 2013,1,471,"Amana Society Service Co","IA","Final",70,644,707,69,71... 2013,1,12341,"MidAmerican Energy Co","IA","Final",45501.781,574786.749,556...

  15. IA Blog Archive | Department of Energy

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

    Blog Archive IA Blog Archive RSS March 10, 2016 President Obama and Canadian Prime Minister Justin Trudeau at the White House in Washington. | Photo courtesy of the Government of Canada. How the U.S. and Canada are Fighting Climate Change Together Learn how the U.S. and Canada are partnering to build a stronger clean energy future. February 10, 2016 DOE Joins Pakistan's Energy Ministries to Launch $3 Million Program to support Pakistan's Energy Development Department of Energy Assistant

  16. IA News Archive | Department of Energy

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

    News Archive IA News Archive RSS April 14, 2016 Statement on First Meeting of the United States-Republic of Korea High Level Bilateral Commission Deputy Secretary of Energy Elizabeth Sherwood-Randall and Republic of Korea Vice Foreign Minister Cho Tae-Yul co-chaired the first meeting of the U.S.-ROK High Level Bilateral Commission in Seoul, South Korea. November 23, 2015 Energy Department Announces Six Clean Energy Projects through Partnership with Israel U.S. Department of Energy and Israel's

  17. HUBBLE RESIDUALS OF NEARBY TYPE Ia SUPERNOVAE ARE CORRELATED...

    Office of Scientific and Technical Information (OSTI)

    Host galaxy measurements will yield improved distances to SNe Ia. less Authors: Kelly, Patrick L. ; Burke, David L. 1 ; Hicken, Malcolm ; Mandel, Kaisey S. ; Kirshner, Robert ...

  18. Turbulence-Flame Interactions in Type Ia Supernovae (Journal Article) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Journal Article: Turbulence-Flame Interactions in Type Ia Supernovae Citation Details In-Document Search Title: Turbulence-Flame Interactions in Type Ia Supernovae The large range of time and length scales involved in type Ia supernovae (SN Ia) requires the use of flame models. As a prelude to exploring various options for flame models, we consider, in this paper, high-resolution three-dimensional simulations of the small-scale dynamics of nuclear flames in the supernova

  19. The Distant Type Ia Supernova Rate

    DOE R&D Accomplishments [OSTI]

    Pain, R.; Fabbro, S.; Sullivan, M.; Ellis, R. S.; Aldering, G.; Astier, P.; Deustua, S. E.; Fruchter, A. S.; Goldhaber, G.; Goobar, A.; Groom, D. E.; Hardin, D.; Hook, I. M.; Howell, D. A.; Irwin, M. J.; Kim, A. G.; Kim, M. Y.; Knop, R. A.; Lee, J. C.; Perlmutter, S.; Ruiz-Lapuente, P.; Schahmaneche, K.; Schaefer, B.; Walton, N. A.

    2002-05-28

    We present a measurement of the rate of distant Type Ia supernovae derived using 4 large subsets of data from the Supernova Cosmology Project. Within this fiducial sample, which surveyed about 12 square degrees, thirty-eight supernovae were detected at redshifts 0.25--0.85. In a spatially flat cosmological model consistent with the results obtained by the Supernova Cosmology Project, we derive a rest-frame Type Ia supernova rate at a mean red shift z {approx_equal} 0.55 of 1.53 {sub -0.25}{sub -0.31}{sup 0.28}{sup 0.32} x 10{sup -4} h{sup 3} Mpc{sup -3} yr{sup -1} or 0.58{sub -0.09}{sub -0.09}{sup +0.10}{sup +0.10} h{sup 2} SNu(1 SNu = 1 supernova per century per 10{sup 10} L{sub B}sun), where the first uncertainty is statistical and the second includes systematic effects. The dependence of the rate on the assumed cosmological parameters is studied and the redshift dependence of the rate per unit comoving volume is contrasted with local estimates in the context of possible cosmic star formation histories and progenitor models.

  20. Search for surviving companions in type Ia supernova remnants

    SciTech Connect (OSTI)

    Pan, Kuo-Chuan; Ricker, Paul M.; Taam, Ronald E. E-mail: pmricker@illinois.edu E-mail: taam@asiaa.sinica.edu.tw

    2014-09-01

    The nature of the progenitor systems of type Ia supernovae (SNe Ia) is still unclear. One way to distinguish between the single-degenerate scenario and double-degenerate scenario for their progenitors is to search for the surviving companions (SCs). Using a technique that couples the results from multi-dimensional hydrodynamics simulations with calculations of the structure and evolution of main-sequence- (MS-) and helium-rich SCs, the color and magnitude of MS- and helium-rich SCs are predicted as functions of time. The SC candidates in Galactic type Ia supernova remnants (Ia SNR) and nearby extragalactic Ia SNRs are discussed. We find that the maximum detectable distance of MS SCs (helium-rich SCs) is 0.6-4 Mpc (0.4-16 Mpc), if the apparent magnitude limit is 27 in the absence of extinction, suggesting that the Large and Small Magellanic Clouds and the Andromeda Galaxy are excellent environments in which to search for SCs. However, only five Ia SNRs have been searched for SCs, showing little support for the standard channels in the singe-degenerate scenario. To better understand the progenitors of SNe Ia, we encourage the search for SCs in other nearby Ia SNRs.

  1. THE ULTRAVIOLET BRIGHTEST TYPE Ia SUPERNOVA 2011de

    SciTech Connect (OSTI)

    Brown, Peter J., E-mail: pbrown@physics.tamu.edu [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, Department of Physics and Astronomy, 4242 TAMU, College Station, TX 77843 (United States)

    2014-11-20

    We present and discuss the ultraviolet (UV)/optical photometric light curves and absolute magnitudes of the TypeIa supernova (SN Ia) 2011de from the Swift Ultraviolet/Optical Telescope. We find it to be the UV brightest SN Ia yet observedmore than a factor of 10 brighter than normal SNe Ia in the mid-ultraviolet. We find that the UV/optical brightness and broad light curve evolution can be modeled with additional flux from the shock of the ejecta hitting a relatively large red giant companion separated by 6 10{sup 13} cm. However, the post-maximum behavior of other UV-bright SNe Ia can also be modeled in a similar manner, including objects with UV spectroscopy or pre-maximum photometry which is inconsistent with this model. This suggests that similar UV luminosities can be intrinsic or caused by other forms of shock interaction. The high velocities reported for SN 2011de make it distinct from the UV-bright ''super-Chandrasekhar'' SNe Ia and the NUV-blue group of normal SNe Ia. SN 2011de is an extreme example of the UV variations in SNe Ia.

  2. DIVERSITY OF TYPE Ia SUPERNOVAE IMPRINTED IN CHEMICAL ABUNDANCES

    SciTech Connect (OSTI)

    Tsujimoto, Takuji [National Astronomical Observatory of Japan, Mitaka-shi, Tokyo 181-8588 (Japan); Shigeyama, Toshikazu, E-mail: taku.tsujimoto@nao.ac.jp [Research Center for the Early Universe, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)

    2012-12-01

    A time delay of Type Ia supernova (SN Ia) explosions hinders the imprint of their nucleosynthesis on stellar abundances. However, some occasional cases give birth to stars that avoid enrichment of their chemical compositions by massive stars and thereby exhibit an SN-Ia-like elemental feature including a very low [Mg/Fe] ( Almost-Equal-To - 1). We highlight the elemental feature of Fe-group elements for two low-Mg/Fe objects detected in nearby galaxies, and propose the presence of a class of SNe Ia that yield the low abundance ratios of [Cr, Mn, Ni/Fe]. Our novel models of chemical evolution reveal that our proposed class of SNe Ia (slow SNe Ia) is associated with ones exploding on a long timescale after their stellar birth and give a significant impact on the chemical enrichment in the Large Magellanic Cloud (LMC). In the Galaxy, on the other hand, this effect is unseen due to the overwhelming enrichment by the major class of SNe Ia that explode promptly (prompt SNe Ia) and eject a large amount of Fe-group elements. This nicely explains the different [Cr, Mn, Ni/Fe] features between the two galaxies as well as the puzzling feature seen in the LMC stars exhibiting very low Ca but normal Mg abundances. Furthermore, the corresponding channel of slow SN Ia is exemplified by performing detailed nucleosynthesis calculations in the scheme of SNe Ia resulting from a 0.8 + 0.6 M{sub Sun} white dwarf merger.

  3. Improved Constraints on Type Ia Supernova Host Galaxy Properties using

    Office of Scientific and Technical Information (OSTI)

    Multi-Wavelength Photometry and their Correlations with Supernova Properties (Journal Article) | SciTech Connect Improved Constraints on Type Ia Supernova Host Galaxy Properties using Multi-Wavelength Photometry and their Correlations with Supernova Properties Citation Details In-Document Search Title: Improved Constraints on Type Ia Supernova Host Galaxy Properties using Multi-Wavelength Photometry and their Correlations with Supernova Properties We improve estimates of the stellar mass and

  4. Climate Action Champions: Dubuque, IA | Department of Energy

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

    Dubuque, IA Climate Action Champions: Dubuque, IA The City of Dubuque, Iowa, features a rich history, a diverse arts and cultural scene, and abundant natural beauty, including majestic limestone bluffs along the Mississippi riverfront. Sustainability is among the city’s top priorities for the future. | Photo courtesy of the City of Dubuque. The City of Dubuque, Iowa, features a rich history, a diverse arts and cultural scene, and abundant natural beauty, including majestic limestone bluffs

  5. CEPHEID CALIBRATIONS OF MODERN TYPE Ia SUPERNOVAE: IMPLICATIONS FOR THE

    Office of Scientific and Technical Information (OSTI)

    HUBBLE CONSTANT (Journal Article) | SciTech Connect CEPHEID CALIBRATIONS OF MODERN TYPE Ia SUPERNOVAE: IMPLICATIONS FOR THE HUBBLE CONSTANT Citation Details In-Document Search Title: CEPHEID CALIBRATIONS OF MODERN TYPE Ia SUPERNOVAE: IMPLICATIONS FOR THE HUBBLE CONSTANT This is the first of two papers reporting measurements from a program to determine the Hubble constant to {approx}5% precision from a refurbished distance ladder. We present new observations of 110 Cepheid variables in the

  6. Century Wind Project | Open Energy Information

    Open Energy Info (EERE)

    EnXco Energy Purchaser MidAmerican Energy Location Wright and Hamilton Counties IA Coordinates 42.504259, -93.646524 Show Map Loading map... "minzoom":false,"mappings...

  7. Pomeroy II (4Q07) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Energy Developer EnXco Energy Purchaser MidAmerican Energy Location Pocahontas County IA Coordinates 42.570484, -94.702506 Show Map Loading map... "minzoom":false,"mappings...

  8. Storm Lake I Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    GE Energy Energy Purchaser MidAmerican Energy Location Buena Vista and Cherokee Counties IA Coordinates 42.57215, -95.340693 Show Map Loading map... "minzoom":false,"mappingse...

  9. Century Wind Project Expansion | Open Energy Information

    Open Energy Info (EERE)

    EnXco Energy Purchaser MidAmerican Energy Location Wright and Hamilton Counties IA Coordinates 42.509141, -93.682151 Show Map Loading map... "minzoom":false,"mappings...

  10. Adair Wind Farm I | Open Energy Information

    Open Energy Info (EERE)

    Systems Developer MidAmerican Energy Energy Purchaser AlliantIES Utilities Location IA Coordinates 41.499234, -94.692628 Show Map Loading map... "minzoom":false,"mappings...

  11. Pomeroy Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Energy Developer EnXco Energy Purchaser MidAmerican Energy Location Pocahontas County IA Coordinates 42.570484, -94.702506 Show Map Loading map... "minzoom":false,"mappings...

  12. Pomeroy II (08) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Energy Developer EnXco Energy Purchaser MidAmerican Energy Location Pocahontas County IA Coordinates 42.570484, -94.702506 Show Map Loading map... "minzoom":false,"mappings...

  13. Intrepid Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Clipper Windpower Energy Purchaser MidAmerican Energy Location Buena Vista Sac Counties IA Coordinates 42.537923, -95.289502 Show Map Loading map... "minzoom":false,"mappings...

  14. Walnut Wind Project Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Energy Developer EnXco Energy Purchaser MidAmerican Energy Location Pottawattamie County IA Coordinates 41.484094, -95.185339 Show Map Loading map... "minzoom":false,"mappings...

  15. Turbulence-Flame Interactions in Type Ia Supernovae (Journal Article) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Journal Article: Turbulence-Flame Interactions in Type Ia Supernovae Citation Details In-Document Search Title: Turbulence-Flame Interactions in Type Ia Supernovae × You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This site is a product of DOE's Office of Scientific and Technical Information (OSTI) and is provided as a public service. Visit OSTI to utilize additional information resources in energy science and technology. A paper copy of

  16. Color dispersion and Milky-Way-like reddening among type Ia supernovae...

    Office of Scientific and Technical Information (OSTI)

    Color dispersion and Milky-Way-like reddening among type Ia supernovae Citation Details In-Document Search Title: Color dispersion and Milky-Way-like reddening among type Ia ...

  17. CfA3: 185 TYPE Ia SUPERNOVA LIGHT CURVES FROM THE CfA (Journal...

    Office of Scientific and Technical Information (OSTI)

    We find that 1991bg-like SNe Ia are sufficiently distinct from other SNe Ia in their color ... reddening from intrinsic supernova color, reducing the systematic uncertainty in SN ...

  18. A Chandrasekhar mass progenitor for the Type Ia supernova remnant 3C 397

    Office of Scientific and Technical Information (OSTI)

    from the enhanced abundances of nickel and manganese (Journal Article) | SciTech Connect A Chandrasekhar mass progenitor for the Type Ia supernova remnant 3C 397 from the enhanced abundances of nickel and manganese Citation Details In-Document Search Title: A Chandrasekhar mass progenitor for the Type Ia supernova remnant 3C 397 from the enhanced abundances of nickel and manganese Despite decades of intense efforts, many fundamental aspects of Type Ia supernovae (SNe Ia) remain elusive. One

  19. SN 2006bt: A PERPLEXING, TROUBLESOME, AND POSSIBLY MISLEADING TYPE Ia

    Office of Scientific and Technical Information (OSTI)

    SUPERNOVA (Journal Article) | SciTech Connect SN 2006bt: A PERPLEXING, TROUBLESOME, AND POSSIBLY MISLEADING TYPE Ia SUPERNOVA Citation Details In-Document Search Title: SN 2006bt: A PERPLEXING, TROUBLESOME, AND POSSIBLY MISLEADING TYPE Ia SUPERNOVA SN 2006bt displays characteristics unlike those of any other known Type Ia supernova (SN Ia). We present optical light curves and spectra of SN 2006bt which demonstrate the peculiar nature of this object. SN 2006bt has broad, slowly declining

  20. Type Ia supernovae from merging white dwarfs. II. Post-merger detonations

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Type Ia supernovae from merging white dwarfs. II. Post-merger detonations Citation Details In-Document Search Title: Type Ia supernovae from merging white dwarfs. II. Post-merger detonations Merging carbon-oxygen (CO) white dwarfs are a promising progenitor system for Type Ia supernovae (SNe Ia), but the underlying physics and timing of the detonation are still debated. If an explosion occurs after the secondary star is fully disrupted, the exploding

  1. A STUDY OF CARBON FEATURES IN TYPE Ia SUPERNOVA SPECTRA (Journal Article) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect A STUDY OF CARBON FEATURES IN TYPE Ia SUPERNOVA SPECTRA Citation Details In-Document Search Title: A STUDY OF CARBON FEATURES IN TYPE Ia SUPERNOVA SPECTRA One of the major differences between various explosion scenarios of Type Ia supernovae (SNe Ia) is the remaining amount of unburned (C+O) material and its velocity distribution within the expanding ejecta. While oxygen absorption features are not uncommon in the spectra of SNe Ia before maximum light, the presence of strong

  2. Early Pennsylvanian wrenching along the Red River-Matador Arch: Formation of a pull-apart basin, Depocenter for Atokan to Lower Des Moines (bend) clastics, Cottle County, Texas

    SciTech Connect (OSTI)

    Stephens, W.C. Jr.; Gunn, R.D.

    1995-06-01

    Early Pennsylvanian wrenching along the Red River-Matador Arch (Tectonic Zone) created a braided series of en echelon faults and folds with associated pop-up structures and pull-apart basins. Local extension, or overstepping, in Southeast Cottle County, Texas, has produced the deepest pull-apart basin along the arch with over 10,000` of structural relief. The emerging Wichita-Amarillo Uplift, to the north, provided an abundant sediment source, which prograded rapidly southward as an alluvial fan-braided river complex. Exposure of basement rocks and lower Paleozoic sediments along the Red River-Matador Arch, also contributed to the basin fill. Syntectonic sedimentation led to the accumulation of over 6000` of Bend (Atoka-lower Des Moines) sediments within the basin. Deposition was dominated initially by alluvial fan to fluvial siliciclastics. As basin subsidence was further amplified by sediment loading, accommodation exceeded sedimentation capturing a large segment of the southward prograding Wichita-Amarillo derived clastic wedge. Encroachment of the late Atoka to lower Des Moines epeiric sea promoted further evolution of depositional environments to fan deltas, marine dominated clastics and, later, localized carbonate development. Type III kerogen rich organic shales produced abundant gas prone source rocks. The extreme depth of the basin combined with the local geothermal gradient provided for significant hydrocarbon generation. By early 1988 new well control helped revise previous stratigraphic correlation demonstrating a rapidly expanding lower Des Moines to Atokan section. The drilling of the Gunn Oil Company-Brothers No. 1 to a total depth of 10,301` in the Mississippian Chappel Limestone, encountered 2025` of Bend sediments, with 279` of gross Bend Conglomerate (162` of net pay). The Brothers No. 1 was potentialled on 11/19/89 with a CAOF of 6.0 MMCFD and filed as the field discovery for the Broken Bone (Bend Conglomerate) field.

  3. An Analysis of Department of Defense Instruction 8500.2 'Information Assurance (IA) Implementation.'

    SciTech Connect (OSTI)

    Campbell, Philip LaRoche

    2012-01-01

    The Department of Defense (DoD) provides its standard for information assurance in its Instruction 8500.2, dated February 6, 2003. This Instruction lists 157 'IA Controls' for nine 'baseline IA levels.' Aside from distinguishing IA Controls that call for elevated levels of 'robustness' and grouping the IA Controls into eight 'subject areas' 8500.2 does not examine the nature of this set of controls, determining, for example, which controls do not vary in robustness, how this set of controls compares with other such sets, or even which controls are required for all nine baseline IA levels. This report analyzes (1) the IA Controls, (2) the subject areas, and (3) the Baseline IA levels. For example, this report notes that there are only 109 core IA Controls (which this report refers to as 'ICGs'), that 43 of these core IA Controls apply without variation to all nine baseline IA levels and that an additional 31 apply with variations. This report maps the IA Controls of 8500.2 to the controls in NIST 800-53 and ITGI's CoBIT. The result of this analysis and mapping, as shown in this report, serves as a companion to 8500.2. (An electronic spreadsheet accompanies this report.)

  4. Type Ia Supernova Spectral Line Ratios as LuminosityIndicators

    SciTech Connect (OSTI)

    Bongard, Sebastien; Baron, E.; Smadja, G.; Branch, David; Hauschildt, Peter H.

    2005-12-07

    Type Ia supernovae have played a crucial role in thediscovery of the dark energy, via the measurement of their light curvesand the determination of the peak brightness via fitting templates to theobserved lightcurve shape. Two spectroscopic indicators are also known tobe well correlated with peak luminosity. Since the spectroscopicluminosity indicators are obtained directly from observed spectra, theywill have different systematic errors than do measurements usingphotometry. Additionally, these spectroscopic indicators may be usefulfor studies of effects of evolution or age of the SNe~;Ia progenitorpopulation. We present several new variants of such spectroscopicindicators which are easy to automate and which minimize the effects ofnoise. We show that these spectroscopic indicators can be measured byproposed JDEM missions such as snap and JEDI.

  5. Power-law cosmology, SN Ia, and BAO

    SciTech Connect (OSTI)

    Dolgov, Aleksander; Halenka, Vitali; Tkachev, Igor E-mail: vithal@umich.edu

    2014-10-01

    We revise observational constraints on the class of models of modified gravity which at low redshifts lead to a power-law cosmology. To this end we use available public data on Supernova Ia and on baryon acoustic oscillations. We show that the expansion regime a(t)?t{sup ?} with ? close to 3/2 in a spatially flat universe is a good fit to these data.

  6. Microsoft PowerPoint - IEEE IAS PES 102313.pptx

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

    DOE's ARRA Smart Grid Program Steve Bossart, Senior Energy Analyst IEEE IAS/PES Pittsburgh Section October 23, 2013 # Topics * OE ARRA Smart Grid Program * OE ARRA Smart Grid Progress * Results and Case Studies * Life After ARRA Smart Grid # DOE OE ARRA Smart Grid Program # American Recovery and Reinvestment Act ($4.5B) * Smart Grid Investment Grants (99 projects) - $3.4 billion Federal; $4.7 billion private sector - > 800 PMUs covering almost 100% of transmission - ~ 8000 distribution

  7. Signatures of a companion star in type Ia supernovae

    SciTech Connect (OSTI)

    Maeda, Keiichi; Kutsuna, Masamichi; Shigeyama, Toshikazu

    2014-10-10

    Although type Ia supernovae (SNe Ia) have been used as precise cosmological distance indicators, their progenitor systems remain unresolved. One of the key questions is whether there is a nondegenerate companion star at the time of a thermonuclear explosion of a white dwarf. In this paper, we investigate whether an interaction between the SN ejecta and the companion star may result in observable footprints around the maximum brightness and thereafter, by performing multidimensional radiation transfer simulations based on hydrodynamic simulations of the interaction. We find that such systems result in variations in various observational characteristics due to different viewing directions, and the predicted behaviors (redder and fainter for the companion direction) are the opposite of what were suggested by the previous study. The variations are generally modest and within observed scatters. However, the model predicts trends between some observables different from those observationally derived, so a large sample of SNe Ia with small calibration errors may be used to constrain the existence of such a companion star. The variations in different colors in optical band passes can be mimicked by external extinctions, so such an effect could be a source of scatter in the peak luminosity and derived distance. After the peak, hydrogen-rich materials expelled from the companion will manifest themselves in hydrogen lines, but Hα is extremely difficult to identify. Alternatively, we find that P{sub β} in postmaximum near-infrared spectra can potentially provide a powerful diagnostic.

  8. MidAmerican Energy Co (South Dakota) | Open Energy Information

    Open Energy Info (EERE)

    733 337.733 9,331.36 19 727.046 15,793.11 4,027 2008-02 224.427 3,537.13 3,232 189.607 3,005.61 728 325.227 9,027.27 19 739.261 15,570.01 3,979 2008-01 265.95 3,999.33 3,230...

  9. MidAmerican Energy Co (Illinois) | Open Energy Information

    Open Energy Info (EERE)

    254494964563629 Outage Hotline: 800-799-4443 References: Energy Information Administration.1 EIA Form 861 Data Utility Id 12341 This article is a stub. You can help OpenEI...

  10. MidAmerican Energy Co | Open Energy Information

    Open Energy Info (EERE)

    254494964563629 Outage Hotline: 1-800-799-4443 Outage Map: www.midamericanenergy.comstor References: EIA Form EIA-861 Final Data File for 2010 - File1a1 Energy Information...

  11. A SEARCH FOR NEW CANDIDATE SUPER-CHANDRASEKHAR-MASS TYPE Ia SUPERNOVAE IN

    Office of Scientific and Technical Information (OSTI)

    THE NEARBY SUPERNOVA FACTORY DATA SET (Journal Article) | SciTech Connect A SEARCH FOR NEW CANDIDATE SUPER-CHANDRASEKHAR-MASS TYPE Ia SUPERNOVAE IN THE NEARBY SUPERNOVA FACTORY DATA SET Citation Details In-Document Search Title: A SEARCH FOR NEW CANDIDATE SUPER-CHANDRASEKHAR-MASS TYPE Ia SUPERNOVAE IN THE NEARBY SUPERNOVA FACTORY DATA SET We present optical photometry and spectroscopy of five Type Ia supernovae discovered by the Nearby Supernova Factory selected to be spectroscopic analogs

  12. Color dispersion and Milky-Way-like reddening among type Ia supernovae

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Color dispersion and Milky-Way-like reddening among type Ia supernovae Citation Details In-Document Search Title: Color dispersion and Milky-Way-like reddening among type Ia supernovae Past analyses of Type Ia supernovae have identified an irreducible scatter of 5%-10% in distance, widely attributed to an intrinsic dispersion in luminosity. Another equally valid source of this scatter is intrinsic dispersion in color. Misidentification of the true source

  13. Type Ia Supernova Hubble Residuals and Host-Galaxy Properties (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect Journal Article: Type Ia Supernova Hubble Residuals and Host-Galaxy Properties Citation Details In-Document Search Title: Type Ia Supernova Hubble Residuals and Host-Galaxy Properties Kim et al. (2013) [K13] introduced a new methodology for determining peak- brightness absolute magnitudes of type Ia supernovae from multi-band light curves. We examine the relation between their parameterization of light curves and Hubble residuals, based on photometry synthesized

  14. Type Ia supernovae yielding distances with 3-4% precision (Journal Article)

    Office of Scientific and Technical Information (OSTI)

    | SciTech Connect Type Ia supernovae yielding distances with 3-4% precision Citation Details In-Document Search Title: Type Ia supernovae yielding distances with 3-4% precision The luminosities of Type Ia supernovae (SN), the thermonuclear explosions of white dwarf stars, vary systematically with their intrinsic color and light-curve decline rate. These relationships have been used to calibrate their luminosities to within ~0.14-0.20 mag from broadband optical light curves, yielding

  15. VARIABLE SODIUM ABSORPTION IN A LOW-EXTINCTION TYPE Ia SUPERNOVA (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect VARIABLE SODIUM ABSORPTION IN A LOW-EXTINCTION TYPE Ia SUPERNOVA Citation Details In-Document Search Title: VARIABLE SODIUM ABSORPTION IN A LOW-EXTINCTION TYPE Ia SUPERNOVA Recent observations have revealed that some Type Ia supernovae exhibit narrow, time-variable Na I D absorption features. The origin of the absorbing material is controversial, but it may suggest the presence of circumstellar gas in the progenitor system prior to the explosion, with significant

  16. The Carnegie Supernova Project: Intrinsic colors of type Ia supernovae

    SciTech Connect (OSTI)

    Burns, Christopher R.; Persson, S. E.; Freedman, Wendy L.; Madore, Barry F. [Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Stritzinger, Maximilian; Contreras, Carlos [Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C (Denmark); Phillips, M. M.; Hsiao, E. Y.; Boldt, Luis; Campillay, Abdo; Castelln, Sergio; Morrell, Nidia; Salgado, Francisco [Carnegie Institution of Washington, Las Campanas Observatory, Colina El Pino, Casilla 601 (Chile); Folatelli, Gaston [Kavli Institute for the Physics and Mathematics of the Universe, Todai Institutes for Advanced Study, the University of Tokyo, 277-8583 Kashiwa (Japan); Suntzeff, Nicholas B. [George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A and M University, Department of Physics and Astronomy, College Station, TX 77843 (United States)

    2014-07-01

    We present an updated analysis of the intrinsic colors of Type Ia supernova (SNe Ia) using the latest data release of the Carnegie Supernova Project. We introduce a new light-curve parameter very similar to stretch that is better suited for fast-declining events, and find that these peculiar types can be seen as extensions to the population of 'normal' SNe Ia. With a larger number of objects, an updated fit to the Lira relation is presented along with evidence for a dependence on the late-time slope of the B V light-curves with stretch and color. Using the full wavelength range from u to H band, we place constraints on the reddening law for the sample as a whole and also for individual events/hosts based solely on the observed colors. The photometric data continue to favor low values of R{sub V} , though with large variations from event to event, indicating an intrinsic distribution. We confirm the findings of other groups that there appears to be a correlation between the derived reddening law, R{sub V} , and the color excess, E(B V), such that larger E(B V) tends to favor lower R{sub V} . The intrinsic u-band colors show a relatively large scatter that cannot be explained by variations in R{sub V} or by the Goobar power-law for circumstellar dust, but rather is correlated with spectroscopic features of the supernova and is therefore likely due to metallicity effects.

  17. HUBBLE RESIDUALS OF NEARBY TYPE Ia SUPERNOVAE ARE CORRELATED WITH HOST

    Office of Scientific and Technical Information (OSTI)

    GALAXY MASSES (Journal Article) | SciTech Connect HUBBLE RESIDUALS OF NEARBY TYPE Ia SUPERNOVAE ARE CORRELATED WITH HOST GALAXY MASSES Citation Details In-Document Search Title: HUBBLE RESIDUALS OF NEARBY TYPE Ia SUPERNOVAE ARE CORRELATED WITH HOST GALAXY MASSES From Sloan Digital Sky Survey u'g'r'i'z' imaging, we estimate the stellar masses of the host galaxies of 70 low-redshift Type Ia supernovae (SNe Ia, 0.015 <z< 0.08) from the hosts' absolute luminosities and mass-to-light

  18. IMPROVED DARK ENERGY CONSTRAINTS FROM {approx}100 NEW CfA SUPERNOVA TYPE Ia

    Office of Scientific and Technical Information (OSTI)

    LIGHT CURVES (Journal Article) | SciTech Connect IMPROVED DARK ENERGY CONSTRAINTS FROM {approx}100 NEW CfA SUPERNOVA TYPE Ia LIGHT CURVES Citation Details In-Document Search Title: IMPROVED DARK ENERGY CONSTRAINTS FROM {approx}100 NEW CfA SUPERNOVA TYPE Ia LIGHT CURVES We combine the CfA3 supernovae Type Ia (SN Ia) sample with samples from the literature to calculate improved constraints on the dark energy equation of state parameter, w. The CfA3 sample is added to the Union set of Kowalski

  19. Improved Dark Energy Constraints From ~ 100 New CfA Supernova Type Ia Light

    Office of Scientific and Technical Information (OSTI)

    Curves (Journal Article) | SciTech Connect Improved Dark Energy Constraints From ~ 100 New CfA Supernova Type Ia Light Curves Citation Details In-Document Search Title: Improved Dark Energy Constraints From ~ 100 New CfA Supernova Type Ia Light Curves We combine the CfA3 supernovae Type Ia (SN Ia) sample with samples from the literature to calculate improved constraints on the dark energy equation of state parameter, w. The CfA3 sample is added to the Union set of Kowalski et al. to form the

  20. Improved Distances to Type Ia Supernovae withMulticolor Light Curve Shapes:

    Office of Scientific and Technical Information (OSTI)

    MLCS2k2 (Journal Article) | SciTech Connect Improved Distances to Type Ia Supernovae withMulticolor Light Curve Shapes: MLCS2k2 Citation Details In-Document Search Title: Improved Distances to Type Ia Supernovae withMulticolor Light Curve Shapes: MLCS2k2 We present an updated version of the Multicolor Light Curve Shape method to measure distances to type Ia supernovae (SN Ia), incorporating new procedures for K-correction and extinction corrections. We also develop a simple model to

  1. THE HYBRID CONe WD + He STAR SCENARIO FOR THE PROGENITORS OF TYPE Ia SUPERNOVAE

    SciTech Connect (OSTI)

    Wang, B.; Meng, X.; Liu, D.-D.; Han, Z.; Liu, Z.-W.

    2014-10-20

    Hybrid CONe white dwarfs (WDs) have been suggested to be possible progenitors of type Ia supernovae (SNe Ia). In this Letter, we systematically studied the hybrid CONe WD + He star scenario for the progenitors of SNe Ia, in which a hybrid CONe WD increases its mass to the Chandrasekhar mass limit by accreting He-rich material from a non-degenerate He star. We obtained the SN Ia birthrates and delay times for this scenario using to a series of detailed binary population synthesis simulations. The SN Ia birthrates for this scenario are ∼0.033-0.539 × 10{sup –3} yr{sup –1}, which roughly accounts for 1%-18% of all SNe Ia. The estimated delay times are ∼28 Myr-178 Myr, which makes these the youngest SNe Ia predicted by any progenitor model so far. We suggest that SNe Ia from this scenario may provide an alternative explanation for type Iax SNe. We also presented some properties of the donors at the point when the WDs reach the Chandrasekhar mass. These properties may be a good starting point for investigating the surviving companions of SNe Ia and for constraining the progenitor scenario studied in this work.

  2. Improved Dark Energy Constraints From ~ 100 New CfA Supernova Type Ia Light

    Office of Scientific and Technical Information (OSTI)

    Curves (Journal Article) | SciTech Connect Journal Article: Improved Dark Energy Constraints From ~ 100 New CfA Supernova Type Ia Light Curves Citation Details In-Document Search Title: Improved Dark Energy Constraints From ~ 100 New CfA Supernova Type Ia Light Curves We combine the CfA3 supernovae Type Ia (SN Ia) sample with samples from the literature to calculate improved constraints on the dark energy equation of state parameter, w. The CfA3 sample is added to the Union set of Kowalski

  3. Sweetspot: Near-infrared observations of 13 type Ia supernovae from a new

    Office of Scientific and Technical Information (OSTI)

    NOAO survey probing the nearby smooth Hubble flow (Journal Article) | SciTech Connect Sweetspot: Near-infrared observations of 13 type Ia supernovae from a new NOAO survey probing the nearby smooth Hubble flow Citation Details In-Document Search Title: Sweetspot: Near-infrared observations of 13 type Ia supernovae from a new NOAO survey probing the nearby smooth Hubble flow We present 13 Type Ia supernovae (SNe Ia) observed in the rest-frame near-infrared (NIR) from 0.02 < z < 0.09

  4. THE ABSOLUTE MAGNITUDES OF TYPE Ia SUPERNOVAE IN THE ULTRAVIOLET (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect THE ABSOLUTE MAGNITUDES OF TYPE Ia SUPERNOVAE IN THE ULTRAVIOLET Citation Details In-Document Search Title: THE ABSOLUTE MAGNITUDES OF TYPE Ia SUPERNOVAE IN THE ULTRAVIOLET We examine the absolute magnitudes and light-curve shapes of 14 nearby (redshift z = 0.004-0.027) Type Ia supernovae (SNe Ia) observed in the ultraviolet (UV) with the Swift Ultraviolet/Optical Telescope. Colors and absolute magnitudes are calculated using both a standard Milky Way extinction

  5. Grouping normal type Ia supernovae by UV to optical color differences

    SciTech Connect (OSTI)

    Milne, Peter A.; Brown, Peter J.; Roming, Peter W. A.; Bufano, Filomena; Gehrels, Neil

    2013-12-10

    Observations of many Type Ia supernovae (SNe Ia) for multiple epochs per object with the Swift Ultraviolet Optical Telescope instrument have revealed that there exists order to the differences in the UV-optical colors of optically normal supernovae (SNe). We examine UV-optical color curves for 23 SNe Ia, dividing the SNe into four groups, and find that roughly one-third of 'NUV-blue' SNe Ia have bluer UV-optical colors than the larger 'NUV-red' group. Two minor groups are recognized, 'MUV-blue' and 'irregular' SNe Ia. While we conclude that the latter group is a subset of the NUV-red group, containing the SNe with the broadest optical peaks, we conclude that the 'MUV-blue' group is a distinct group. Separating into the groups and accounting for the time evolution of the UV-optical colors lowers the scatter in two NUV-optical colors (e.g., u v and uvw1 v) to the level of the scatter in b v. This finding is promising for extending the cosmological utilization of SNe Ia into the NUV. We generate spectrophotometry of 33 SNe Ia and determine the correct grouping for each. We argue that there is a fundamental spectral difference in the 2900-3500 wavelength range, a region suggested to be dominated by absorption from iron-peak elements. The NUV-blue SNe Ia feature less absorption than the NUV-red SNe Ia. We show that all NUV-blue SNe Ia in this sample also show evidence of unburned carbon in optical spectra, whereas only one NUV-red SN Ia features that absorption line. Every NUV-blue event also exhibits a low gradient of the Si II ?6355 absorption feature. Many NUV-red events also exhibit a low gradient, perhaps suggestive that NUV-blue events are a subset of the larger low-velocity gradient group.

  6. THE BIRTH RATE OF SNe Ia FROM HYBRID CONe WHITE DWARFS

    SciTech Connect (OSTI)

    Meng, Xiangcun [Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011 (China); Podsiadlowski, Philipp, E-mail: xiangcunmeng@ynao.ac.cn [Department of Astronomy, Oxford University, Oxford OX1 3RH (United Kingdom)

    2014-07-10

    Considering the uncertainties of the C-burning rate (CBR) and the treatment of convective boundaries, Chen et al. found that there is a regime where it is possible to form hybrid CONe white dwarfs (WDs), i.e., ONe WDs with carbon-rich cores. As these hybrid WDs can be as massive as 1.30 M {sub ?}, not much mass needs to be accreted for these objects to reach the Chandrasekhar limit and to explode as Type Ia supernovae (SNe Ia). We have investigated their contribution to the overall SN Ia birth rate and found that such SNe Ia tend to be relatively young with typical time delays between 0.1 and 1 Gyr, where some may be as young as 30 Myr. SNe Ia from hybrid CONe WDs may contribute several percent to all SNe Ia, depending on the common-envelope ejection efficiency and the CBR. We suggest that these SNe Ia may produce part of the 2002cx-like SN Ia class.

  7. On silicon group elements ejected by supernovae type IA

    SciTech Connect (OSTI)

    De, Soma; Timmes, F. X. [School of Earth and Space Exploration, Arizona State University, Tempe, AZ (United States); Brown, Edward F. [Joint Institute for Nuclear Astrophysics, University of Notre Dame, IN 46556 (United States); Calder, Alan C. [Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY (United States); Townsley, Dean M. [Department of Physics and Astronomy, The University of Alabama, Tuscaloosa, AL (United States); Athanassiadou, Themis [Swiss National Supercomputing Centre, Via Trevano 131, 6900 Lugano (Switzerland); Chamulak, David A. [Physics Division, Argonne National Laboratory, Argonne, IL (United States); Hawley, Wendy [Laboratoire d'Astrophysique de Marseille, Marseille cedex 13 F-13388 (France); Jack, Dennis, E-mail: somad@asu.edu [Departamento de Astronoma, Universidad de Guanajuato, Apartado Postal 144, 36000 Guanajuato (Mexico)

    2014-06-01

    There is evidence that the peak brightness of a Type Ia supernova is affected by the electron fraction Y {sub e} at the time of the explosion. The electron fraction is set by the aboriginal composition of the white dwarf and the reactions that occur during the pre-explosive convective burning. To date, determining the makeup of the white dwarf progenitor has relied on indirect proxies, such as the average metallicity of the host stellar population. In this paper, we present analytical calculations supporting the idea that the electron fraction of the progenitor systematically influences the nucleosynthesis of silicon group ejecta in Type Ia supernovae. In particular, we suggest the abundances generated in quasi-nuclear statistical equilibrium are preserved during the subsequent freeze-out. This allows potential recovery of Y {sub e} at explosion from the abundances recovered from an observed spectra. We show that measurement of {sup 28}Si, {sup 32}S, {sup 40}Ca, and {sup 54}Fe abundances can be used to construct Y {sub e} in the silicon-rich regions of the supernovae. If these four abundances are determined exactly, they are sufficient to recover Y {sub e} to 6%. This is because these isotopes dominate the composition of silicon-rich material and iron-rich material in quasi-nuclear statistical equilibrium. Analytical analysis shows the {sup 28}Si abundance is insensitive to Y {sub e}, the {sup 32}S abundance has a nearly linear trend with Y {sub e}, and the {sup 40}Ca abundance has a nearly quadratic trend with Y {sub e}. We verify these trends with post-processing of one-dimensional models and show that these trends are reflected in the model's synthetic spectra.

  8. UTILITYID","UTILNAME","STATE","YEAR","MONTH","RES_REV (Thousand...

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

    ...4,267880,0,,,0,62572,939724,0 471,"Amana Society Service Co","IA",2005,1,55,640,697,65,769...,,80422,1293053,476805 12341,"MidAmerican Energy Co","IA",2005,1,39423,496907,524726,25700...

  9. UTILITYID","UTILNAME","STATE_CODE","YEAR","MONTH","RESIDENTIAL...

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

    ...,94478.106,1068909.125,428579 471,"Amana Society Service Co","IA",2012,1,75,617,703,76,696...0,96460,1270667,484214 12341,"MidAmerican Energy Co","IA",2012,1,39429.518,500244.796,5521...

  10. UTILITY_ID","UTILNAME","STATE_CODE","YEAR","MONTH","RES_REV ...

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

    ...8,271065,0,,,0,67455,928657,0 471,"Amana Society Service Co","IA","2007R",1,63,645,707,70,...0,85894,1256263,483594 12341,"MidAmerican Energy Co","IA","2007R",1,38128,474364,539478,25...

  11. UTILITY_ID","UTILNAME","STATE_CODE","YEAR","MONTH","RES_REV ...

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

    ...,90424.591,1142019.157,426909 471,"Amana Society Service Co","IA",2009,1,84,679,710,89,750...0,95160,1347761,482995 12341,"MidAmerican Energy Co","IA",2009,1,46327.143,619260.46,54557...

  12. UTILITY_ID","UTILNAME","STATE_CODE","YEAR","MONTH","RES_REV ...

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

    ...,90577.294,1124952.028,427803 471,"Amana Society Service Co","IA",2010,1,75,625,710,78,679...0,97698,1300060,483536 12341,"MidAmerican Energy Co","IA",2010,1,47406.924,646488.65,54729...

  13. UTILITYID","UTILNAME","STATE","YEAR","MONTH","RES_REV (Thousand...

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

    ...1,246796,0,,,0,56619,966064,0 471,"Amana Society Service Co","IA",2003,1,40,601,692,38,675...7,66909,1254595,470633 12341,"MidAmerican Energy Co","IA",2003,1,31381,391154,510625,16463...

  14. UTILITY_ID","UTILNAME","STATE_CODE","YEAR","MONTH","RES_REV ...

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

    ...0,83215.98,1119242.926,425071 471,"Amana Society Service Co","IA",2008,1,68,645,708,73,737...0,83931,1337774,484355 12341,"MidAmerican Energy Co","IA",2008,1,40643.972,535012.07,54378...

  15. UTILITYID","UTILNAME","STATE","YEAR","MONTH","RES_REV (Thousand...

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

    ...7,255308,0,,,0,61058,953105,0 471,"Amana Society Service Co","IA",2004,1,53,587,696,65,749...,,74622,1275348,473382 12341,"MidAmerican Energy Co","IA",2004,1,38005,477429,517190,24648...

  16. UTILITY_ID","UTILNAME","STATE_CODE","YEAR","MONTH","RES_REV ...

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

    ...7,260544,0,,,0,63754,932707,0 471,"Amana Society Service Co","IA",2006,1,50,590,699,58,692...,,93335,1228232,481559 12341,"MidAmerican Energy Co","IA",2006,1,37221,459792,532611,25092...

  17. HIGH-VELOCITY LINE FORMING REGIONS IN THE TYPE Ia SUPERNOVA 2009ig (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect VELOCITY LINE FORMING REGIONS IN THE TYPE Ia SUPERNOVA 2009ig Citation Details In-Document Search Title: HIGH-VELOCITY LINE FORMING REGIONS IN THE TYPE Ia SUPERNOVA 2009ig We report measurements and analysis of high-velocity (HVF) (>20,000 km s{sup -1}) and photospheric absorption features in a series of spectra of the Type Ia supernova (SN) 2009ig obtained between -14 days and +13 days with respect to the time of maximum B-band luminosity (B-max). We identify

  18. Hubble Residuals of Nearby SN Ia Are Correlated with Host Galaxy Masses

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Hubble Residuals of Nearby SN Ia Are Correlated with Host Galaxy Masses Citation Details In-Document Search Title: Hubble Residuals of Nearby SN Ia Are Correlated with Host Galaxy Masses From Sloan Digital Sky Survey u{prime} g{prime} r{prime} i{prime} z{prime} imaging, we estimate the stellar masses of the host galaxies of 70 low redshift SN Ia (0.015 < z < 0.08) from the hosts absolute luminosities and mass-to-light ratios. These nearby SN were

  19. ASYMMETRY IN THE OBSERVED METAL-RICH EJECTA OF THE GALACTIC TYPE IA

    Office of Scientific and Technical Information (OSTI)

    SUPERNOVA REMNANT G299.2-2.9 (Journal Article) | SciTech Connect ASYMMETRY IN THE OBSERVED METAL-RICH EJECTA OF THE GALACTIC TYPE IA SUPERNOVA REMNANT G299.2-2.9 Citation Details In-Document Search Title: ASYMMETRY IN THE OBSERVED METAL-RICH EJECTA OF THE GALACTIC TYPE IA SUPERNOVA REMNANT G299.2-2.9 We have performed a deep Chandra observation of the Galactic Type Ia supernova remnant G299.2-2.9. Here we report the initial results from our imaging and spectral analysis. The observed

  20. File:USDA-CE-Production-GIFmaps-IA.pdf | Open Energy Information

    Open Energy Info (EERE)

    IA.pdf Jump to: navigation, search File File history File usage Iowa Ethanol Plant Locations Size of this preview: 776 600 pixels. Full resolution (1,650 1,275 pixels,...

  1. "Report Date","U.S.",,,"PADD I",,,"PADD IA",,,"PADD IB",,,"PADD...

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

    I",,,"PADD IA",,,"PADD IB",,,"PADD IC",,,"PADD II" ,"Old Reported Value ( per Gallon)","New Revised Value ( per Gallon)","Difference","Old Reported Value ( per Gallon)","New ...

  2. Flames in Type Ia Supernova: Deflagration-Detonation Transition in the

    Office of Scientific and Technical Information (OSTI)

    Oxygen Burning Flame. (Journal Article) | SciTech Connect Journal Article: Flames in Type Ia Supernova: Deflagration-Detonation Transition in the Oxygen Burning Flame. Citation Details In-Document Search Title: Flames in Type Ia Supernova: Deflagration-Detonation Transition in the Oxygen Burning Flame. Abstract not provided. Authors: Kerstein, Alan R. ; Woosley, Stan E. ; Aspden, Andrew J. Publication Date: 2010-10-01 OSTI Identifier: 1121667 Report Number(s): SAND2010-7483J 485788 DOE

  3. New approaches for modeling type Ia supernovae (Conference) | SciTech

    Office of Scientific and Technical Information (OSTI)

    Connect Conference: New approaches for modeling type Ia supernovae Citation Details In-Document Search Title: New approaches for modeling type Ia supernovae × You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This site is a product of DOE's Office of Scientific and Technical Information (OSTI) and is provided as a public service. Visit OSTI to utilize additional information resources in energy science and technology. A paper copy of this document is also

  4. Cosmological parameter uncertainties from SALT-II type Ia supernova light curve models

    SciTech Connect (OSTI)

    Mosher, J.; Sako, M. [Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104 (United States); Guy, J.; Astier, P.; Betoule, M.; El-Hage, P.; Pain, R.; Regnault, N. [LPNHE, CNRS/IN2P3, Universit Pierre et Marie Curie Paris 6, Universi Denis Diderot Paris 7, 4 place Jussieu, F-75252 Paris Cedex 05 (France); Kessler, R.; Frieman, J. A. [Kavli Institute for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637 (United States); Marriner, J. [Center for Particle Astrophysics, Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510 (United States); Biswas, R.; Kuhlmann, S. [Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439 (United States); Schneider, D. P., E-mail: kessler@kicp.chicago.edu [Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802 (United States)

    2014-09-20

    We use simulated type Ia supernova (SN Ia) samples, including both photometry and spectra, to perform the first direct validation of cosmology analysis using the SALT-II light curve model. This validation includes residuals from the light curve training process, systematic biases in SN Ia distance measurements, and a bias on the dark energy equation of state parameter w. Using the SN-analysis package SNANA, we simulate and analyze realistic samples corresponding to the data samples used in the SNLS3 analysis: ?120 low-redshift (z < 0.1) SNe Ia, ?255 Sloan Digital Sky Survey SNe Ia (z < 0.4), and ?290 SNLS SNe Ia (z ? 1). To probe systematic uncertainties in detail, we vary the input spectral model, the model of intrinsic scatter, and the smoothing (i.e., regularization) parameters used during the SALT-II model training. Using realistic intrinsic scatter models results in a slight bias in the ultraviolet portion of the trained SALT-II model, and w biases (w {sub input} w {sub recovered}) ranging from 0.005 0.012 to 0.024 0.010. These biases are indistinguishable from each other within the uncertainty; the average bias on w is 0.014 0.007.

  5. Type Ia supernovae from merging white dwarfs. II. Post-merger detonations

    SciTech Connect (OSTI)

    Raskin, Cody; Kasen, Daniel [Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA (United States); Moll, Rainer; Woosley, Stan [Department of Physics and Department of Astronomy, University of California, Santa Cruz, CA (United States); Schwab, Josiah [Department of Physics and Department of Astronomy, University of California, Berkeley, CA (United States)

    2014-06-10

    Merging carbon-oxygen (CO) white dwarfs are a promising progenitor system for Type Ia supernovae (SNe Ia), but the underlying physics and timing of the detonation are still debated. If an explosion occurs after the secondary star is fully disrupted, the exploding primary will expand into a dense CO medium that may still have a disk-like structure. This interaction will decelerate and distort the ejecta. Here we carry out multidimensional simulations of 'tamped' SN Ia models, using both particle and grid-based codes to study the merger and explosion dynamics and a radiative transfer code to calculate synthetic spectra and light curves. We find that post-merger explosions exhibit an hourglass-shaped asymmetry, leading to strong variations in the light curves with viewing angle. The two most important factors affecting the outcome are the scale height of the disk, which depends sensitively on the binary mass ratio, and the total {sup 56}Ni yield, which is governed by the central density of the remnant core. The synthetic broadband light curves rise and decline very slowly, and the spectra generally look peculiar, with weak features from intermediate mass elements but relatively strong carbon absorption. We also consider the effects of the viscous evolution of the remnant and show that a longer time delay between merger and explosion probably leads to larger {sup 56}Ni yields and more symmetrical remnants. We discuss the relevance of this class of aspherical 'tamped' SN Ia for explaining the class of 'super-Chandrasekhar' SN Ia.

  6. Ultraviolet observations of Super-Chandrasekhar mass type Ia supernova candidates with swift UVOT

    SciTech Connect (OSTI)

    Brown, Peter J.; Smitka, Michael T.; Krisciunas, Kevin; Wang, Lifan; Kuin, Paul; De Pasquale, Massimiliano; Scalzo, Richard; Holland, Stephen; Milne, Peter

    2014-05-20

    Among Type Ia supernovae (SNe Ia), a class of overluminous objects exist whose ejecta mass is inferred to be larger than the canonical Chandrasekhar mass. We present and discuss the UV/optical photometric light curves, colors, absolute magnitudes, and spectra of three candidate Super-Chandrasekhar mass SNe—2009dc, 2011aa, and 2012dn—observed with the Swift Ultraviolet/Optical Telescope. The light curves are at the broad end for SNe Ia, with the light curves of SN 2011aa being among the broadest ever observed. We find all three to have very blue colors which may provide a means of excluding these overluminous SNe from cosmological analysis, though there is some overlap with the bluest of 'normal' SNe Ia. All three are overluminous in their UV absolute magnitudes compared to normal and broad SNe Ia, but SNe 2011aa and 2012dn are not optically overluminous compared to normal SNe Ia. The integrated luminosity curves of SNe 2011aa and 2012dn in the UVOT range (1600-6000 Å) are only half as bright as SN 2009dc, implying a smaller {sup 56}Ni yield. While it is not enough to strongly affect the bolometric flux, the early time mid-UV flux makes a significant contribution at early times. The strong spectral features in the mid-UV spectra of SNe 2009dc and 2012dn suggest a higher temperature and lower opacity to be the cause of the UV excess rather than a hot, smooth blackbody from shock interaction. Further work is needed to determine the ejecta and {sup 56}Ni masses of SNe 2011aa and 2012dn and to fully explain their high UV luminosities.

  7. Hubble Residuals of Nearby SN Ia Are Correlated with Host Galaxy Masses

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Hubble Residuals of Nearby SN Ia Are Correlated with Host Galaxy Masses Citation Details In-Document Search Title: Hubble Residuals of Nearby SN Ia Are Correlated with Host Galaxy Masses × You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This site is a product of DOE's Office of Scientific and Technical Information (OSTI) and is provided as a public service. Visit OSTI to utilize additional information resources in

  8. Type Ia supernova rate measurements to redshift 2.5 from CANDELS: Searching

    Office of Scientific and Technical Information (OSTI)

    for prompt explosions in the early universe (Journal Article) | SciTech Connect Type Ia supernova rate measurements to redshift 2.5 from CANDELS: Searching for prompt explosions in the early universe Citation Details In-Document Search Title: Type Ia supernova rate measurements to redshift 2.5 from CANDELS: Searching for prompt explosions in the early universe The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) was a multi-cycle treasury program on the Hubble Space

  9. Type Ia supernovae yielding distances with 3-4% precision (Journal Article)

    Office of Scientific and Technical Information (OSTI)

    | SciTech Connect Type Ia supernovae yielding distances with 3-4% precision Citation Details In-Document Search Title: Type Ia supernovae yielding distances with 3-4% precision × You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This site is a product of DOE's Office of Scientific and Technical Information (OSTI) and is provided as a public service. Visit OSTI to utilize additional information resources in energy science and technology. A paper copy of this

  10. Strong near-infrared carbon in the Type Ia supernova iPTF13ebh

    SciTech Connect (OSTI)

    Hsiao, E. Y.; Burns, C. R.; Contreras, C.; Höflich, P.; Sand, D.; Marion, G. H.; Phillips, M. M.; Stritzinger, M.; González-Gaitán, S.; Mason, R. E.; Folatelli, G.; Parent, E.; Gall, C.; Amanullah, R.; Anupama, G. C.; Arcavi, I.; Banerjee, D. P. K.; Beletsky, Y.; Blanc, G. A.; Bloom, J. S.; Brown, P. J.; Campillay, A.; Cao, Y.; De Cia, A.; Diamond, T.; Freedman, W. L.; Gonzalez, C.; Goobar, A.; Holmbo, S.; Howell, D. A.; Johansson, J.; Kasliwal, M. M.; Kirshner, R. P.; Krisciunas, K.; Kulkarni, S. R.; Maguire, K.; Milne, P. A.; Morrell, N.; Nugent, P. E.; Ofek, E. O.; Osip, D.; Palunas, P.; Perley, D. A.; Persson, S. E.; Piro, A. L.; Rabus, M.; Roth, M.; Schiefelbein, J. M.; Srivastav, S.; Sullivan, M.; Suntzeff, N. B.; Surace, J.; Woźniak, P. R.; Yaron, O.

    2015-05-22

    We present near-infrared (NIR) time-series spectroscopy, as well as complementary ultraviolet (UV), optical, and NIR data, of the Type Ia supernova (SN Ia) iPTF13ebh, which was discovered within two days from the estimated time of explosion. The first NIR spectrum was taken merely 2.3 days after explosion and may be the earliest NIR spectrum yet obtained of a SN Ia. The most striking features in the spectrum are several NIR C I lines, and the C Iλ1.0693 μm line is the strongest ever observed in a SN Ia. Interestingly, no strong optical C II counterparts were found, even though the optical spectroscopic time series began early and is densely cadenced. Except at the very early epochs, within a few days from the time of explosion, we show that the strong NIR C I compared to the weaker optical C II appears to be general in SNe Ia. iPTF13ebh is a fast decliner with Δm15(B) = 1.79 ± 0.01, and its absolute magnitude obeys the linear part of the width-luminosity relation. It is therefore categorized as a “transitional” event, on the fast-declining end of normal SNe Ia as opposed to subluminous/91bg-like objects. iPTF13ebh shows NIR spectroscopic properties that are distinct from both the normal and subluminous/91bg-like classes, bridging the observed characteristics of the two classes. These NIR observations suggest that composition and density of the inner core are similar to that of 91bg-like events, and that it has a deep-reaching carbon burning layer that is not observed in more slowly declining SNe Ia. Furthermore, there is also a substantial difference between the explosion times inferred from the early-time light curve and the velocity evolution of the Si II λ0.6355 μm line, implying a long dark phase of ~4 days.

  11. Strong near-infrared carbon in the Type Ia supernova iPTF13ebh

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

    Hsiao, E. Y.; Burns, C. R.; Contreras, C.; Höflich, P.; Sand, D.; Marion, G. H.; Phillips, M. M.; Stritzinger, M.; González-Gaitán, S.; Mason, R. E.; et al

    2015-05-22

    We present near-infrared (NIR) time-series spectroscopy, as well as complementary ultraviolet (UV), optical, and NIR data, of the Type Ia supernova (SN Ia) iPTF13ebh, which was discovered within two days from the estimated time of explosion. The first NIR spectrum was taken merely 2.3 days after explosion and may be the earliest NIR spectrum yet obtained of a SN Ia. The most striking features in the spectrum are several NIR C I lines, and the C Iλ1.0693 μm line is the strongest ever observed in a SN Ia. Interestingly, no strong optical C II counterparts were found, even though themore » optical spectroscopic time series began early and is densely cadenced. Except at the very early epochs, within a few days from the time of explosion, we show that the strong NIR C I compared to the weaker optical C II appears to be general in SNe Ia. iPTF13ebh is a fast decliner with Δm15(B) = 1.79 ± 0.01, and its absolute magnitude obeys the linear part of the width-luminosity relation. It is therefore categorized as a “transitional” event, on the fast-declining end of normal SNe Ia as opposed to subluminous/91bg-like objects. iPTF13ebh shows NIR spectroscopic properties that are distinct from both the normal and subluminous/91bg-like classes, bridging the observed characteristics of the two classes. These NIR observations suggest that composition and density of the inner core are similar to that of 91bg-like events, and that it has a deep-reaching carbon burning layer that is not observed in more slowly declining SNe Ia. Furthermore, there is also a substantial difference between the explosion times inferred from the early-time light curve and the velocity evolution of the Si II λ0.6355 μm line, implying a long dark phase of ~4 days.« less

  12. TYPE Ia SUPERNOVA COLORS AND EJECTA VELOCITIES: HIERARCHICAL BAYESIAN REGRESSION WITH NON-GAUSSIAN DISTRIBUTIONS

    SciTech Connect (OSTI)

    Mandel, Kaisey S.; Kirshner, Robert P. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Foley, Ryan J., E-mail: kmandel@cfa.harvard.edu [Astronomy Department, University of Illinois at Urbana-Champaign, 1002 West Green Street, Urbana, IL 61801 (United States)

    2014-12-20

    We investigate the statistical dependence of the peak intrinsic colors of Type Ia supernovae (SNe Ia) on their expansion velocities at maximum light, measured from the Si II ?6355 spectral feature. We construct a new hierarchical Bayesian regression model, accounting for the random effects of intrinsic scatter, measurement error, and reddening by host galaxy dust, and implement a Gibbs sampler and deviance information criteria to estimate the correlation. The method is applied to the apparent colors from BVRI light curves and Si II velocity data for 79 nearby SNe Ia. The apparent color distributions of high-velocity (HV) and normal velocity (NV) supernovae exhibit significant discrepancies for B V and B R, but not other colors. Hence, they are likely due to intrinsic color differences originating in the B band, rather than dust reddening. The mean intrinsic B V and B R color differences between HV and NV groups are 0.06 0.02 and 0.09 0.02 mag, respectively. A linear model finds significant slopes of 0.021 0.006 and 0.030 0.009 mag (10{sup 3} km s{sup 1}){sup 1} for intrinsic B V and B R colors versus velocity, respectively. Because the ejecta velocity distribution is skewed toward high velocities, these effects imply non-Gaussian intrinsic color distributions with skewness up to +0.3. Accounting for the intrinsic-color-velocity correlation results in corrections to A{sub V} extinction estimates as large as 0.12 mag for HV SNe Ia and +0.06 mag for NV events. Velocity measurements from SN Ia spectra have the potential to diminish systematic errors from the confounding of intrinsic colors and dust reddening affecting supernova distances.

  13. Roeder Farms | Open Energy Information

    Open Energy Info (EERE)

    Developer 5045 Wind Partners Energy Purchaser Alliant Energy Location Des Moines IA Coordinates 43.29729211, -93.28315258 Show Map Loading map... "minzoom":false,"mapp...

  14. Iowa Office of Energy Independence | Open Energy Information

    Open Energy Info (EERE)

    navigation, search Name: Iowa Office of Energy Independence Place: Des Moines, Iowa Zip: IA 50319 Product: In 2007, Governor Culver and the Iowa State Legislature created the...

  15. Superior Energy Performance: Certifying Increased Energy Productivity...

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

    ... Management Working Group (EMWG) Waterwastewater Des Moines, IA (2) Delta Diablo, CA Ithaca, NY Kent County, DE Victor Valley, CA Alexandria (VA) Renew ...

  16. Type Ia supernova rate measurements to redshift 2.5 from CANDELS: Searching for prompt explosions in the early universe

    SciTech Connect (OSTI)

    Rodney, Steven A.; Riess, Adam G.; Graur, Or; Jones, David O. [Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218 (United States); Strolger, Louis-Gregory; Dahlen, Tomas; Casertano, Stefano; Ferguson, Henry C.; Koekemoer, Anton M. [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Dickinson, Mark E. [National Optical Astronomy Observatory, 950 North Cherry Avenue, Tucson, AZ 85719 (United States); Garnavich, Peter [Department of Physics, University of Notre Dame, Notre Dame, IN 46556 (United States); Hayden, Brian [E.O. Lawrence Berkeley National Lab, 1 Cyclotron Road, Berkeley, CA 94720 (United States); Jha, Saurabh W.; McCully, Curtis; Patel, Brandon [Department of Physics and Astronomy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854 (United States); Kirshner, Robert P. [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States); Mobasher, Bahram [Department of Physics and Astronomy, University of California, Riverside, CA 92521 (United States); Weiner, Benjamin J. [Department of Astronomy, University of Arizona, Tucson, AZ 85721 (United States); Cenko, S. Bradley [Astrophysics Science Division, NASA Goddard Space Flight Center, Mail Code 661, Greenbelt, MD 20771 (United States); Clubb, Kelsey I. [Department of Astronomy, University of California, Berkeley, CA 94720 (United States); and others

    2014-07-01

    The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) was a multi-cycle treasury program on the Hubble Space Telescope (HST) that surveyed a total area of ?0.25 deg{sup 2} with ?900 HST orbits spread across five fields over three years. Within these survey images we discovered 65 supernovae (SNe) of all types, out to z ? 2.5. We classify ?24 of these as Type Ia SNe (SNe Ia) based on host galaxy redshifts and SN photometry (supplemented by grism spectroscopy of six SNe). Here we present a measurement of the volumetric SN Ia rate as a function of redshift, reaching for the first time beyond z = 2 and putting new constraints on SN Ia progenitor models. Our highest redshift bin includes detections of SNe that exploded when the universe was only ?3 Gyr old and near the peak of the cosmic star formation history. This gives the CANDELS high redshift sample unique leverage for evaluating the fraction of SNe Ia that explode promptly after formation (<500 Myr). Combining the CANDELS rates with all available SN Ia rate measurements in the literature we find that this prompt SN Ia fraction is f{sub P} = 0.53{sub stat0.10}{sup 0.09}{sub sys0.26}{sup 0.10}, consistent with a delay time distribution that follows a simple t {sup 1} power law for all times t > 40 Myr. However, mild tension is apparent between ground-based low-z surveys and space-based high-z surveys. In both CANDELS and the sister HST program CLASH (Cluster Lensing And Supernova Survey with Hubble), we find a low rate of SNe Ia at z > 1. This could be a hint that prompt progenitors are in fact relatively rare, accounting for only 20% of all SN Ia explosionsthough further analysis and larger samples will be needed to examine that suggestion.

  17. Worksheet

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

    ... Park City of",1153,"Lake Park",22,"G2",2,2,2,,"IC","DFO",,5,2005,"OP" "IA","Hamilton",12341,"MidAmerican Energy Co",56252,"Century",22,"CWF",185,185,185,,"WT","WND",,9,20...

  18. Worksheet

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

    ... SBD 9403 Aegon DC",22,6113,1.5,1.5,1.5,,"IC","DFO",,9,2007,"SB" "IA","Hamilton",12341,"MidAmerican Energy Co",56252,"Century",22,"CWF2",15,15,15,,"WT","WND",,12,200...

  19. SNe Ia tests of quintessence tracker cosmology in an anisotropic background

    SciTech Connect (OSTI)

    Miranda, W.; Carneiro, S.; Pigozzo, C. E-mail: saulo.carneiro@pq.cnpq.br

    2014-07-01

    We investigate the observational effects of a quintessence model in an anisotropic spacetime. The anisotropic metric is a non-rotating particular case of a generalized Gdel's metric and is classified as Bianchi III. This metric is an exact solution of the Einstein-Klein-Gordon field equations with an anisotropic scalar field ?, which is responsible for the anisotropy of the spacetime geometry. We test the model against observations of type Ia supernovae, analyzing the SDSS dataset calibrated with the MLCS2k2 fitter, and the results are compared to standard quintessence models with Ratra-Peebles potentials. We obtain a good agreement with observations, with best values for the matter and curvature density parameters ?{sub M}=0.29 and ?{sub k}=0.01 respectively. We conclude that present SNe Ia observations cannot, alone, distinguish a possible anisotropic axis in the cosmos.

  20. Comparing the host galaxies of type Ia, type II, and type Ibc supernovae

    SciTech Connect (OSTI)

    Shao, X.; Liang, Y. C.; Chen, X. Y.; Zhong, G. H.; Deng, L. C.; Zhang, B.; Shi, W. B.; Zhou, L.; Dennefeld, M.; Hammer, F.; Flores, H. E-mail: ycliang@bao.ac.cn

    2014-08-10

    We compare the host galaxies of 902 supernovae (SNe), including SNe Ia, SNe II, and SNe Ibc, which are selected by cross-matching the Asiago Supernova Catalog with the Sloan Digital Sky Survey (SDSS) Data Release 7. We selected an additional 213 galaxies by requiring the light fraction of spectral observations to be >15%, which could represent well the global properties of the galaxies. Among these 213 galaxies, 135 appear on the Baldwin-Phillips-Terlevich diagram, which allows us to compare the hosts in terms of whether they are star-forming (SF) galaxies, active galactic nuclei (AGNs; including composites, LINERs, and Seyfert 2s) or absorption-line galaxies (Absorps; i.e., their related emission lines are weak or non-existent). The diagrams related to the parameters D{sub n}(4000), H?{sub A}, stellar masses, star formation rates (SFRs), and specific SFRs for the SNe hosts show that almost all SNe II and most of the SNe Ibc occur in SF galaxies, which have a wide range of stellar masses and low D{sub n}(4000). The SNe Ia hosts as SF galaxies following similar trends. A significant fraction of SNe Ia occurs in AGNs and absorption-line galaxies, which are massive and have high D{sub n}(4000). The stellar population analysis from spectral synthesis fitting shows that the hosts of SNe II have a younger stellar population than hosts of SNe Ia. These results are compared with those of the 689 comparison galaxies where the SDSS fiber captures less than 15% of the total light. These comparison galaxies appear biased toward higher 12+log(O/H) (?0.1 dex) at a given stellar mass. Therefore, we believe the aperture effect should be kept in mind when the properties of the hosts for different types of SNe are discussed.

  1. THE EARLIEST NEAR-INFRARED TIME-SERIES SPECTROSCOPY OF A TYPE Ia SUPERNOVA

    SciTech Connect (OSTI)

    Hsiao, E. Y.; Phillips, M. M.; Morrell, N.; Contreras, C.; Roth, M.; Marion, G. H.; Kirshner, R. P.; Burns, C. R.; Freedman, W. L.; Persson, S. E.; Winge, C.; Gerardy, C. L.; Hoeflich, P.; Im, M.; Jeon, Y.; Pignata, G.; Stanishev, V.; and others

    2013-04-01

    We present ten medium-resolution, high signal-to-noise ratio near-infrared (NIR) spectra of SN 2011fe from SpeX on the NASA Infrared Telescope Facility (IRTF) and Gemini Near-Infrared Spectrograph (GNIRS) on Gemini North, obtained as part of the Carnegie Supernova Project. This data set constitutes the earliest time-series NIR spectroscopy of a Type Ia supernova (SN Ia), with the first spectrum obtained at 2.58 days past the explosion and covering -14.6 to +17.3 days relative to B-band maximum. C I {lambda}1.0693 {mu}m is detected in SN 2011fe with increasing strength up to maximum light. The delay in the onset of the NIR C I line demonstrates its potential to be an effective tracer of unprocessed material. For the first time in a SN Ia, the early rapid decline of the Mg II {lambda}1.0927 {mu}m velocity was observed, and the subsequent velocity is remarkably constant. The Mg II velocity during this constant phase locates the inner edge of carbon burning and probes the conditions under which the transition from deflagration to detonation occurs. We show that the Mg II velocity does not correlate with the optical light-curve decline rate {Delta}m{sub 15}(B). The prominent break at {approx}1.5 {mu}m is the main source of concern for NIR k-correction calculations. We demonstrate here that the feature has a uniform time evolution among SNe Ia, with the flux ratio across the break strongly correlated with {Delta}m{sub 15}(B). The predictability of the strength and the onset of this feature suggests that the associated k-correction uncertainties can be minimized with improved spectral templates.

  2. Optical and ultraviolet observations of the narrow-lined type Ia SN 2012fr in NGC 1365

    SciTech Connect (OSTI)

    Zhang, Ju-Jia; Bai, Jin-Ming; Wang, Bo; Liu, Zheng-Wei [Yunnan Observatories (YNAO), Chinese Academy of Sciences, Kunming 650011 (China); Wang, Xiao-Feng; Zhao, Xu-Lin; Chen, Jun-Cheng [Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University, Beijing 100084 (China); Zhang, Tian-Meng, E-mail: jujia@ynao.ac.cn, E-mail: baijinming@ynao.ac.cn, E-mail: wang_xf@mail.tsinghua.edu.cn [National Astronomical Observatories of China (NAOC), Chinese Academy of Sciences, Beijing 100012 (China)

    2014-07-01

    Extensive optical and ultraviolet (UV) observations of the type Ia supernova (SN Ia) 2012fr are presented in this paper. It has a relatively high luminosity, with an absolute B-band peak magnitude of about 19.5 mag and a smaller post-maximum decline rate than normal SNe Ia (e.g., ?m {sub 15}(B) =0.85 0.05 mag). Based on the UV and optical light curves, we derived that a {sup 56}Ni mass of about 0.88 M {sub ?} was synthesized in the explosion. The earlier spectra are characterized by noticeable high-velocity features of Si II ?6355 and Ca II with velocities in the range of ?22, 000-25, 000 km s{sup 1}. At around the maximum light, these spectral features are dominated by the photospheric components which are noticeably narrower than normal SNe Ia. The post-maximum velocity of the photosphere remains almost constant at ?12,000 km s{sup 1} for about one month, reminiscent of the behavior of some luminous SNe Ia like SN 1991T. We propose that SN 2012fr may represent a subset of the SN 1991T-like SNe Ia viewed in a direction with a clumpy or shell-like structure of ejecta, in terms of a significant level of polarization reported in Maund et al. in 2013.

  3. A SUPER-EDDINGTON WIND SCENARIO FOR THE PROGENITORS OF TYPE Ia SUPERNOVAE

    SciTech Connect (OSTI)

    Ma, Xin; Chen, Xuefei; Chen, Hai-liang; Han, Zhanwen; Denissenkov, Pavel A. E-mail: cxf@ynao.ac.cn

    2013-12-01

    The accretion of hydrogen-rich material on to carbon-oxygen white dwarfs (CO WDs) is crucial for understanding Type Ia supernova (SN Ia) from the single-degenerate model, but this process has not been well understood due to the numerical difficulties in treating H and He flashes during the accretion. For CO WD masses from 0.5 to 1.378 M {sub ?} and accretion rates in the range from 10{sup 8} to 10{sup 5} M {sub ?} yr{sup 1}, we simulated the accretion of solar-composition material on to CO WDs using the state-of-the-art stellar evolution code of MESA. For comparison with steady-state models, we first ignored the contribution from nuclear burning to the luminosity when determining the Eddington accretion rate, and found that the properties of H burning in our accreting CO WD models are similar to those from the steady-state models, except that the critical accretion rates at which the WDs turn into red giants or H-shell flashes occur on their surfaces are slightly higher than those from the steady-state models. However, the super-Eddington wind is triggered at much lower accretion rates than previously thought, when the contribution of nuclear burning to the total luminosity is included. This super-Eddington wind naturally prevents the CO WDs with high accretion rates from becoming red giants, thus presenting an alternative to the optically thick wind proposed by Hachisu etal. Furthermore, the super-Eddington wind works in low-metallicity environments, which may explain SNe Ia observed at high redshifts.

  4. SPECTROPOLARIMETRY OF THE TYPE Ia SN 2007sr TWO MONTHS AFTER MAXIMUM LIGHT

    SciTech Connect (OSTI)

    Zelaya, P.; Quinn, J. R.; Clocchiatti, A.; Baade, D.; Patat, F.; Hoeflich, P.; Maund, J.; Wang, L.; Wheeler, J. C.

    2013-02-01

    We present late-time spectropolarimetric observations of SN 2007sr, obtained with the Very Large Telescope at the ESO Paranal Observatory when the object was 63 days after maximum light. The late-time spectrum displays strong line polarization in the Ca II absorption features. SN 2007sr adds to the case of some normal Type Ia supernovae that show high line polarization or repolarization at late times, a fact that might be connected with the presence of high-velocity features at early times.

  5. IA REP0 SAND85-2809 Unlimited Release UC-92A

    Office of Scientific and Technical Information (OSTI)

    IA REP0 SAND85-2809 Unlimited Release UC-92A Printed July 1986 High Energy Gas Fracture Experiments in Fluid-Filled Boreholes-Potential Geothermal Application J. F. Cuderman, T. Y. Chu, J. Jung, R. D. Jacobson Prepared by Sandia National Laboratories Albuquerque, New Mexico 87 185 and Livermore, California 94550 for the United States Department of Energy under Contract DE-AC04-76DP00789 DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States

  6. Consistent use of type Ia supernovae highly magnified by galaxy clusters to constrain the cosmological parameters

    SciTech Connect (OSTI)

    Zitrin, Adi [Cahill Center for Astronomy and Astrophysics, California Institute of Technology, MS 249-17, Pasadena, CA 91125 (United States); Redlich, Matthias [Universitt Heidelberg, Zentrum fr Astronomie, Institut fr Theoretische Astrophysik, Philosophenweg 12, D-69120 Heidelberg (Germany); Broadhurst, Tom, E-mail: adizitrin@gmail.com [Department of Theoretical Physics, University of Basque Country UPV/EHU, Bilbao (Spain)

    2014-07-01

    We discuss how Type Ia supernovae (SNe) strongly magnified by foreground galaxy clusters should be self-consistently treated when used in samples fitted for the cosmological parameters. While the cluster lens magnification of a SN can be well constrained from sets of multiple images of various background galaxies with measured redshifts, its value is typically dependent on the fiducial set of cosmological parameters used to construct the mass model. In such cases, one should not naively demagnify the observed SN luminosity by the model magnification into the expected Hubble diagram, which would create a bias, but instead take into account the cosmological parameters a priori chosen to construct the mass model. We quantify the effect and find that a systematic error of typically a few percent, up to a few dozen percent per magnified SN may be propagated onto a cosmological parameter fit unless the cosmology assumed for the mass model is taken into account (the bias can be even larger if the SN is lying very near the critical curves). We also simulate how such a bias propagates onto the cosmological parameter fit using the Union2.1 sample supplemented with strongly magnified SNe. The resulting bias on the deduced cosmological parameters is generally at the few percent level, if only few biased SNe are included, and increases with the number of lensed SNe and their redshift. Samples containing magnified Type Ia SNe, e.g., from ongoing cluster surveys, should readily account for this possible bias.

  7. TYCHO SN 1572: A NAKED Ia SUPERNOVA REMNANT WITHOUT AN ASSOCIATED AMBIENT MOLECULAR CLOUD

    SciTech Connect (OSTI)

    Tian, W. W.; Leahy, D. A.

    2011-03-10

    The historical supernova remnant (SNR) Tycho SN 1572 originates from the explosion of a normal Type Ia supernova that is believed to have originated from a carbon-oxygen white dwarf in a binary system. We analyze the 21 cm continuum, H I, and {sup 12}CO-line data from the Canadian Galactic Plane Survey in the direction of SN 1572 and the surrounding region. We construct H I absorption spectra to SN 1572 and three nearby compact sources. We conclude that SN 1572 has no molecular cloud interaction, which argues against previous claims that a molecular cloud is interacting with the SNR. This new result does not support a recent claim that dust, newly detected by AKARI, originates from such an SNR-cloud interaction. We suggest that the SNR has a kinematic distance of 2.5-3.0 kpc based on a nonlinear rotational curve model. Very high energy {gamma}-ray emission from the remnant has been detected by the VERITAS telescope, so our result shows that its origin should not be an SNR-cloud interaction. Both radio and X-ray observations support that SN 1572 is an isolated Type Ia SNR.

  8. Spectroscopic Determination of the Low Redshift Type Ia Supernova Rate from the Sloan Digital Sky Survey

    SciTech Connect (OSTI)

    Krughoff, K. S.; Connolly, Andrew J.; Frieman, Joshua; SubbaRao, Mark; Kilper, Gary; Schneider, Donald P.

    2011-04-10

    Supernova rates are directly coupled to high mass stellar birth and evolution. As such, they are one of the few direct measures of the history of cosmic stellar evolution. In this paper we describe an probabilistic technique for identifying supernovae within spectroscopic samples of galaxies. We present a study of 52 type Ia supernovae ranging in age from -14 days to +40 days extracted from a parent sample of \\simeq 50,000 spectra from the SDSS DR5. We find a Supernova Rate (SNR) of 0.472^{+0.048}_{-0.039}(Systematic)^{+0.081}_{-0.071}(Statistical)SNu at a redshift of = 0.1. This value is higher than other values at low redshift at the 1{\\sigma}, but is consistent at the 3{\\sigma} level. The 52 supernova candidates used in this study comprise the third largest sample of supernovae used in a type Ia rate determination to date. In this paper we demonstrate the potential for the described approach for detecting supernovae in future spectroscopic surveys.

  9. MidAmerican Energy (Electric)- Commercial EnergyAdvantage Rebate Program

    Broader source: Energy.gov [DOE]

    Rebates must be submitted within three months of equipment installation in existing buildings and within six months of equipment installation in new construction. An itemized and dated invoice...

  10. MidAmerican Energy (Gas)- Commercial EnergyAdvantage Rebate Program

    Broader source: Energy.gov [DOE]

    Rebates must be submitted within three months of equipment installation in existing buildings and within six months of equipment installation in new construction. An itemized and dated invoice...

  11. LAX XXlCfl jX?iK, Idd+?KYLViG?IA

    Office of Legacy Management (LM)

    f , : I~&l, samtier cipwati8Aa CffUm - . Jiux.lCJ d,# 1754 - - _- - .- t :; . Jesse e. ahizmn*~*ter -2.' -------- - _ &tV' hi@A l f izau Bkteriala ;' . . 1 -7 I _' i' . Fpr&G& r&Q Q,&& fu &fI& L;&& -l&d 2;,i' iI,;/Qi' rIGN CQ&GgJy p;E& p;~p>gyf LAX XXlCfl jX?iK, Idd+?KYLViG?IA i-icfer~~o is &o ta yaw rwarandu3;: l P iimwmbec L?, 1953, reque&in~ a d&q.&ti of khority tA A&sister prog= for th+zz developmrrrl,

  12. Near-infrared line identification in type Ia supernovae during the transitional phase

    SciTech Connect (OSTI)

    Friesen, Brian; Baron, E.; Wisniewski, John P.; Miller, Timothy R.; Parrent, Jerod T.; Thomas, R. C.; Marion, G. H.

    2014-09-10

    We present near-infrared synthetic spectra of a delayed-detonation hydrodynamical model and compare them to observed spectra of four normal Type Ia supernovae ranging from day +56.5 to day +85. This is the epoch during which supernovae are believed to be undergoing the transition from the photospheric phase, where spectra are characterized by line scattering above an optically thick photosphere, to the nebular phase, where spectra consist of optically thin emission from forbidden lines. We find that most spectral features in the near-infrared can be accounted for by permitted lines of Fe II and Co II. In addition, we find that [Ni II] fits the emission feature near 1.98 μm, suggesting that a substantial mass of {sup 58}Ni exists near the center of the ejecta in these objects, arising from nuclear burning at high density.

  13. EARLY OBSERVATIONS AND ANALYSIS OF THE TYPE Ia SN 2014J IN M82

    SciTech Connect (OSTI)

    Marion, G. H.; Vink, J. [University of Texas at Austin, 1 University Station C1400, Austin, TX 78712-0259 (United States); Sand, D. J. [Physics Department, Texas Tech University, Lubbock, TX 79409 (United States); Hsiao, E. Y. [Carnegie Observatories, Las Campanas Observatory, Colina El Pino, Casilla 601 (Chile); Banerjee, D. P. K.; Joshi, V.; Venkataraman, V.; Ashok, N. M. [Astronomy and Astrophysics Division, Physical Research Laboratory, Navrangapura, Ahmedabad - 380009, Gujarat (India); Valenti, S.; Howell, D. A. [Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Suite 102, Santa Barbara, CA 93117 (United States); Stritzinger, M. D. [Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C (Denmark); Amanullah, R.; Johansson, J. [The Oskar Klein Centre, Physics Department, Stockholm University, Albanova University Center, SE 106 91 Stockholm (Sweden); Binzel, R. P. [Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139 (United States); Bochanski, J. J. [Haverford College, 370 Lancaster Avenue, Haverford, PA 19041 (United States); Bryngelson, G. L. [Department of Physics and Astronomy, Francis Marion University, 4822 East Palmetto Street, Florence, SC 29506 (United States); Burns, C. R. [Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Drozdov, D. [Department of Physics and Astronomy, Clemson University, 8304 University Station, Clemson, SC 29634 (United States); Fieber-Beyer, S. K. [Department of Space Studies, University of North Dakota, University Stop 9008, ND 58202 (United States); Graham, M. L., E-mail: hman@astro.as.utexas.edu [Astronomy Department, University of California at Berkeley, Berkeley, CA 94720 (United States); and others

    2015-01-01

    We present optical and near infrared (NIR) observations of the nearby Type Ia SN 2014J. Seventeen optical and 23 NIR spectra were obtained from 10days before (10d) to 10days after (+10d) the time of maximum B-band brightness. The relative strengths of absorption features and their patterns of development can be compared at one day intervals throughout most of this period. Carbon is not detected in the optical spectra, but we identify C I?1.0693 in the NIR spectra. Mg II lines with high oscillator strengths have higher initial velocities than other Mg II lines. We show that the velocity differences can be explained by differences in optical depths due to oscillator strengths. The spectra of SN 2014J show that it is a normal SN Ia, but many parameters are near the boundaries between normal and high-velocity subclasses. The velocities for O I, Mg II, Si II, S II, Ca II, and Fe II suggest that SN 2014J has a layered structure with little or no mixing. That result is consistent with the delayed detonation explosion models. We also report photometric observations, obtained from 10d to +29d, in the UBVRIJH and K{sub s} bands. The template fitting package SNooPy is used to interpret the light curves and to derive photometric parameters. Using R{sub V} = 1.46, which is consistent with previous studies, SNooPy finds that A{sub V} = 1.80 for E(B V){sub host} = 1.23 0.06 mag. The maximum B-band brightness of 19.19 0.10 mag was reached on February 1.74 UT 0.13days and the supernova has a decline parameter, ?m {sub 15}, of 1.12 0.02 mag.

  14. EVOLUTION OF POST-IMPACT REMNANT HELIUM STARS IN TYPE Ia SUPERNOVA REMNANTS WITHIN THE SINGLE-DEGENERATE SCENARIO

    SciTech Connect (OSTI)

    Pan, Kuo-Chuan; Ricker, Paul M.; Taam, Ronald E. E-mail: pmricker@illinois.edu

    2013-08-10

    The progenitor systems of Type Ia supernovae (SNe Ia) are still under debate. Based on recent hydrodynamics simulations, non-degenerate companions in the single-degenerate scenario (SDS) should survive the supernova (SN) impact. One way to distinguish between the SDS and the double-degenerate scenario is to search for the post-impact remnant stars (PIRSs) in SN Ia remnants. Using a technique that combines multi-dimensional hydrodynamics simulations with one-dimensional stellar evolution simulations, we have examined the post-impact evolution of helium-rich binary companions in the SDS. It is found that these helium-rich PIRSs (He PIRSs) dramatically expand and evolve to a luminous phase (L {approx} 10{sup 4} L{sub Sun }) about 10 yr after an SN explosion. Subsequently, they contract and evolve to become hot blue-subdwarf-like (sdO-like) stars by releasing gravitational energy, persisting as sdO-like stars for several million years before evolving to the helium red-giant phase. We therefore predict that a luminous OB-like star should be detectable within {approx}30 yr after the SN explosion. Thereafter, it will shrink and become an sdO-like star in the central regions of SN Ia remnants within star-forming regions for SN Ia progenitors evolved via the helium-star channel in the SDS. These He PIRSs are predicted to be rapidly rotating (v{sub rot} {approx}> 50 km s{sup -1}) and to have high spatial velocities (v{sub linear} {approx}> 500 km s{sup -1}). Furthermore, if SN remnants have diffused away and are not recognizable at a later stage, He PIRSs could be an additional source of single sdO stars and/or hypervelocity stars.

  15. Measurements of the Rate of Type Ia Supernovae at Redshift z < ~0.3 from the SDSS-II Supernova Survey

    SciTech Connect (OSTI)

    Dilday, Benjamin; Smith, Mathew; Bassett, Bruce; Becker, Andrew; Bender, Ralf; Castander, Francisco; Cinabro, David; Filippenko, Alexei V.; Frieman, Joshua A.; Galbany, Lluis; Garnavich, Peter M.; /Notre Dame U. /Stockholm U., OKC /Stockholm U.

    2010-01-01

    We present a measurement of the volumetric Type Ia supernova (SN Ia) rate based on data from the Sloan Digital Sky Survey II (SDSS-II) Supernova Survey. The adopted sample of supernovae (SNe) includes 516 SNe Ia at redshift z {approx}< 0.3, of which 270 (52%) are spectroscopically identified as SNe Ia. The remaining 246 SNe Ia were identified through their light curves; 113 of these objects have spectroscopic redshifts from spectra of their host galaxy, and 133 have photometric redshifts estimated from the SN light curves. Based on consideration of 87 spectroscopically confirmed non-Ia SNe discovered by the SDSS-II SN Survey, we estimate that 2.04{sub -0.95}{sup +1.61}% of the photometric SNe Ia may be misidentified. The sample of SNe Ia used in this measurement represents an order of magnitude increase in the statistics for SN Ia rate measurements in the redshift range covered by the SDSS-II Supernova Survey. If we assume a SN Ia rate that is constant at low redshift (z < 0.15), then the SN observations can be used to infer a value of the SN rate of r{sub V} = (2.69{sub -0.30-0.01}{sup +0.34+0.21}) x 10{sup -5} SNe yr{sup -1} Mpc{sup -3} (H{sub 0}/(70 km s{sup -1} Mpc{sup -1})){sup 3} at a mean redshift of {approx} 0.12, based on 79 SNe Ia of which 72 are spectroscopically confirmed. However, the large sample of SNe Ia included in this study allows us to place constraints on the redshift dependence of the SN Ia rate based on the SDSS-II Supernova Survey data alone. Fitting a power-law model of the SN rate evolution, r{sub V} (z) = A{sub p} x ((1+z)/(1+z{sub 0})){sup {nu}}, over the redshift range 0.0 < z < 0.3 with z{sub 0} = 0.21, results in A{sub p} = (3.43{sub -0.15}{sup +0.15}) x 10{sup -5} SNe yr{sup -1} Mpc{sup -3} (H{sub 0}/(70 km s{sup -1} Mpc{sup -1})){sup 3} and {nu} = 2.04{sub -0.89}{sup +0.90}.

  16. A Measurement of the Rate of Type Ia Supernovae in Galaxy Clusters from the SDSS-II Supernova Survey

    SciTech Connect (OSTI)

    Dilday, Benjamin; Bassett, Bruce; Becker, Andrew; Bender, Ralf; Castander, Francisco; Cinabro, David; Frieman, Joshua A.; Galbany, Lluis; Garnavich, Peter; Goobar, Ariel; Hopp, Ulrich; /Munich, Tech. U. /Munich U. Observ. /Tokyo U.

    2010-03-01

    We present measurements of the Type Ia supernova (SN) rate in galaxy clusters based on data from the Sloan Digital Sky Survey-II (SDSS-II) Supernova Survey. The cluster SN Ia rate is determined from 9 SN events in a set of 71 C4 clusters at z {le} 0.17 and 27 SN events in 492 maxBCG clusters at 0.1 {le} z {le} 0.3. We find values for the cluster SN Ia rate of (0.37{sub -0.12-0.01}{sup +0.17+0.01}) SNur h{sup 2} and (0.55{sub -0.11-0.01}{sup +0.13+0.02}) SNur h{sup 2} (SNux = 10{sup -12}L{sub x{circle_dot}}{sup -1} yr{sup -1}) in C4 and maxBCG clusters, respectively, where the quoted errors are statistical and systematic, respectively. The SN rate for early-type galaxies is found to be (0.31{sub -0.12-0.01}{sup +0.18+0.01}) SNur h{sup 2} and (0.49{sub -0.11-0.01}{sup +0.15+0.02}) SNur h{sup 2} in C4 and maxBCG clusters, respectively. The SN rate for the brightest cluster galaxies (BCG) is found to be (2.04{sub -1.11-0.04}{sup +1.99+0.07}) SNur h{sup 2} and (0.36{sub -0.30-0.01}{sup +0.84+0.01}) SNur h{sup 2} in C4 and maxBCG clusters, respectively. The ratio of the SN Ia rate in cluster early-type galaxies to that of the SN Ia rate in field early-type galaxies is 1.94{sub -0.91-0.015}{sup +1.31+0.043} and 3.02{sub -1.03-0.048}{sup +1.31+0.062}, for C4 and maxBCG clusters, respectively. The SN rate in galaxy clusters as a function of redshift, which probes the late time SN Ia delay distribution, shows only weak dependence on redshift. Combining our current measurements with previous measurements, we fit the cluster SN Ia rate data to a linear function of redshift, and find r{sub L} = [(0.49{sub -0.14}{sup +0.15}) + (0.91{sub -0.81}{sup +0.85}) x z] SNuB h{sup 2}. A comparison of the radial distribution of SNe in cluster to field early-type galaxies shows possible evidence for an enhancement of the SN rate in the cores of cluster early-type galaxies. With an observation of at most 3 hostless, intra-cluster SNe Ia, we estimate the fraction of cluster SNe that are hostless to be (9.4{sub -5.1}{sup +8.3})%.

  17. FIRST EVIDENCE OF GLOBULAR CLUSTER FORMATION FROM THE EJECTA OF PROMPT TYPE Ia SUPERNOVAE

    SciTech Connect (OSTI)

    Tsujimoto, Takuji [National Astronomical Observatory of Japan, Mitaka-shi, Tokyo 181-8588 (Japan); Bekki, Kenji, E-mail: taku.tsujimoto@nao.ac.jp [ICRAR, M468, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 (Australia)

    2012-06-01

    Recent spectroscopic observations of globular clusters (GCs) in the Large Magellanic Cloud (LMC) have discovered that one of the intermediate-age GCs, NGC 1718, with [Fe/H] = -0.7 has an extremely low [Mg/Fe] ratio of {approx}-0.9. We propose that NGC 1718 was formed from the ejecta of Type Ia supernovae mixed with very metal-poor ([Fe/H] <-1.3) gas about {approx}2 Gyr ago. The proposed scenario is shown to be consistent with the observed abundances of Fe-group elements such as Cr, Mn, and Ni. In addition, compelling evidence for asymptotic giant branch stars playing a role in chemical enrichment during this GC formation is found. We suggest that the origin of the metal-poor gas is closely associated with efficient gas transfer from the outer gas disk of the Small Magellanic Cloud to the LMC disk. We anticipate that the outer part of the LMC disk contains field stars exhibiting significantly low [Mg/Fe] ratios, formed through the same process as NGC 1718.

  18. PRODUCTION OF THE p-PROCESS NUCLEI IN THE CARBON-DEFLAGRATION MODEL FOR TYPE Ia SUPERNOVAE

    SciTech Connect (OSTI)

    Kusakabe, Motohiko; Iwamoto, Nobuyuki; Nomoto, Ken'ichi E-mail: iwamoto.nobuyuki@jaea.go.jp

    2011-01-01

    We calculate the nucleosynthesis of proton-rich isotopes in the carbon-deflagration model for Type Ia supernovae (SNe Ia). The seed abundances are obtained by calculating the s-process nucleosynthesis that is expected to occur in the repeating helium shell flashes on the carbon-oxygen (CO) white dwarf (WD) during mass accretion from a binary companion. When the deflagration wave passes through the outer layer of the CO WD, p-nuclei are produced by photodisintegration reactions on s-nuclei in a region where the peak temperature ranges from 1.9 to 3.6 x 10{sup 9} K. We confirm the sensitivity of the p-process on the initial distribution of s-nuclei. We show that the initial C/O ratio in the WD does not affect much the yield of p-nuclei. On the other hand, the abundance of {sup 22}Ne left after s-processing has a large influence on the p-process via the {sup 22}Ne({alpha},n) reaction. We find that about 50% of p-nuclides are co-produced when normalized to their solar abundances in all adopted cases of seed distribution. Mo and Ru, which are largely underproduced in Type II supernovae (SNe II), are produced more than in SNe II although they are underproduced with respect to the yield levels of other p-nuclides. The ratios between p-nuclei and iron in the ejecta are larger than the solar ratios by a factor of 1.2. We also compare the yields of oxygen, iron, and p-nuclides in SNe Ia and SNe II and suggest that SNe Ia could make a larger contribution than SNe II to the solar system content of p-nuclei.

  19. Metabolomic profiling of the nectars of Aquilegia pubescens and <i>A. Canadensis

    SciTech Connect (OSTI)

    Noutsos, Christos; Perera, Ann M.; Nikolau, Basil J.; Seaver, Samuel M. D.; Ware, Doreen H.; Motta, Andrea

    2015-05-01

    To date, variation in nectar chemistry of flowering plants has not been studied in detail. Such variation exerts considerable influence on pollinator–plant interactions, as well as on flower traits that play important roles in the selection of a plant for visitation by specific pollinators. Over the past 60 years the Aquilegia genus has been used as a key model for speciation studies. In this study, we defined the metabolomic profiles of flower samples of two Aquilegia species, <i>A. Canadensis and <i>A. pubescens. We identified a total of 75 metabolites that were classified into six main categories: organic acids, fatty acids, amino acids, esters, sugars, and unknowns. The mean abundances of 25 of these metabolites were significantly different between the two species, providing insights into interspecies variation in floral chemistry. Using the PlantSEED biochemistry database, we found that the majority of these metabolites are involved in biosynthetic pathways. Finally, we explored the annotated genome of <i>A. coerulea, using the PlantSEED pipeline and reconstructed the metabolic network of Aquilegia. This network, which contains the metabolic pathways involved in generating the observed chemical variation, is now publicly available from the DOE Systems Biology Knowledge Base (KBase; http://kbase.us).

  20. Constraints on the progenitor system of the type Ia supernova 2014J from pre-explosion Hubble space telescope imaging

    SciTech Connect (OSTI)

    Kelly, Patrick L.; Fox, Ori D.; Filippenko, Alexei V.; Shen, Ken J.; Zheng, WeiKang; Graham, Melissa L.; Tucker, Brad E.; Cenko, S. Bradley; Schaefer, Gail

    2014-07-20

    We constrain the properties of the progenitor system of the highly reddened Type Ia supernova (SN Ia) 2014J in Messier 82 (M82; d ? 3.5 Mpc). We determine the supernova (SN) location using Keck-II K-band adaptive optics images, and we find no evidence for flux from a progenitor system in pre-explosion near-ultraviolet through near-infrared Hubble Space Telescope (HST) images. Our upper limits exclude systems having a bright red giant companion, including symbiotic novae with luminosities comparable to that of RS Ophiuchi. While the flux constraints are also inconsistent with predictions for comparatively cool He-donor systems (T ? 35,000 K), we cannot preclude a system similar to V445 Puppis. The progenitor constraints are robust across a wide range of R{sub V} and A{sub V} values, but significantly greater values than those inferred from the SN light curve and spectrum would yield proportionally brighter luminosity limits. The comparatively faint flux expected from a binary progenitor system consisting of white dwarf stars would not have been detected in the pre-explosion HST imaging. Infrared HST exposures yield more stringent constraints on the luminosities of very cool (T < 3000 K) companion stars than was possible in the case of SN Ia 2011fe.

  1. Spectroscopic Properties of Star-Forming Host Galaxies and Type Ia Supernova Hubble Residuals in a Nearly Unbiased Sample

    SciTech Connect (OSTI)

    D'Andrea, Chris B.; et al.

    2011-12-20

    We examine the correlation between supernova host galaxy properties and their residuals on the Hubble diagram. We use supernovae discovered during the Sloan Digital Sky Survey II - Supernova Survey, and focus on objects at a redshift of z < 0.15, where the selection effects of the survey are known to yield a complete Type Ia supernova sample. To minimize the bias in our analysis with respect to measured host-galaxy properties, spectra were obtained for nearly all hosts, spanning a range in magnitude of -23 < M_r < -17. In contrast to previous works that use photometric estimates of host mass as a proxy for global metallicity, we analyze host-galaxy spectra to obtain gas-phase metallicities and star-formation rates from host galaxies with active star formation. From a final sample of ~ 40 emission-line galaxies, we find that light-curve corrected Type Ia supernovae are ~ 0.1 magnitudes brighter in high-metallicity hosts than in low-metallicity hosts. We also find a significant (> 3{\\sigma}) correlation between the Hubble residuals of Type Ia supernovae and the specific star-formation rate of the host galaxy. We comment on the importance of supernova/host-galaxy correlations as a source of systematic bias in future deep supernova surveys.

  2. A POSSIBLE EVOLUTIONARY SCENARIO OF HIGHLY MAGNETIZED SUPER-CHANDRASEKHAR WHITE DWARFS: PROGENITORS OF PECULIAR TYPE Ia SUPERNOVAE

    SciTech Connect (OSTI)

    Das, Upasana; Mukhopadhyay, Banibrata; Rao, A. R. E-mail: bm@physics.iisc.ernet.in

    2013-04-10

    Several recently discovered peculiar Type Ia supernovae seem to demand an altogether new formation theory that might help explain the puzzling dissimilarities between them and the standard Type Ia supernovae. The most striking aspect of the observational analysis is the necessity of invoking super-Chandrasekhar white dwarfs having masses {approx}2.1-2.8 M{sub Sun }, M{sub Sun} being the mass of Sun, as their most probable progenitors. Strongly magnetized white dwarfs having super-Chandrasekhar masses have already been established as potential candidates for the progenitors of peculiar Type Ia supernovae. Owing to the Landau quantization of the underlying electron degenerate gas, theoretical results yielded the observationally inferred mass range. Here, we sketch a possible evolutionary scenario by which super-Chandrasekhar white dwarfs could be formed by accretion on to a commonly observed magnetized white dwarf, invoking the phenomenon of flux freezing. This opens multiple possible evolution scenarios ending in supernova explosions of super-Chandrasekhar white dwarfs having masses within the range stated above. We point out that our proposal has observational support, such as the recent discovery of a large number of magnetized white dwarfs by the Sloan Digital Sky Survey.

  3. Radiogenic p-isotopes from type Ia supernova, nuclear physics uncertainties, and galactic chemical evolution compared with values in primitive meteorites

    SciTech Connect (OSTI)

    Travaglio, C.; Gallino, R.; Rauscher, T.; Dauphas, N.; Rpke, F. K.; Hillebrandt, W. E-mail: claudia.travaglio@b2fh.org

    2014-11-10

    The nucleosynthesis of proton-rich isotopes is calculated for multi-dimensional Chandrasekhar-mass models of Type Ia supernovae (SNe Ia) with different metallicities. The predicted abundances of the short-lived radioactive isotopes {sup 92}Nb, {sup 97,} {sup 98}Tc, and {sup 146}Sm are given in this framework. The abundance seeds are obtained by calculating s-process nucleosynthesis in the material accreted onto a carbon-oxygen white dwarf from a binary companion. A fine grid of s-seeds at different metallicities and {sup 13}C-pocket efficiencies is considered. A galactic chemical evolution model is used to predict the contribution of SN Ia to the solar system p-nuclei composition measured in meteorites. Nuclear physics uncertainties are critical to determine the role of SNe Ia in the production of {sup 92}Nb and {sup 146}Sm. We find that, if standard Chandrasekhar-mass SNe Ia are at least 50% of all SN Ia, they are strong candidates for reproducing the radiogenic p-process signature observed in meteorites.

  4. Persistent C II absorption in the normal type Ia supernova 2002fk

    SciTech Connect (OSTI)

    Cartier, Rgis; Zelaya, Paula [Millennium Institute of Astrophysics, Casilla 36-D, Santiago (Chile); Hamuy, Mario; Maza, Jos; Gonzlez, Luis; Huerta, Leonor [Departamento de Astronoma, Universidad de Chile, Casilla 36-D, Santiago (Chile); Pignata, Giuliano [Departamento Ciencias Fisicas, Universidad Andres Bello, Av. Repblica 252, Santiago (Chile); Frster, Francisco [Center for Mathematical Modelling, Universidad de Chile, Avenida Blanco Encalada 2120, Piso 7, Santiago (Chile); Folatelli, Gaston [Institute for the Physics and Mathematics of the Universe (IPMU), University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583 (Japan); Phillips, Mark M.; Morrell, Nidia; Contreras, Carlos; Roth, Miguel; Gonzlez, Sergio [Carnegie Institution of Washington, Las Campanas Observatory, Colina el Pino s/n, Casilla 601 (Chile); Krisciunas, Kevin; Suntzeff, Nicholas B. [Department of Physics and Astronomy, Texas A and M University, 4242 TAMU, College Station, TX 77843 (United States); Clocchiatti, Alejandro [Departamento de Astronoma y Astrofsica, Pontificia Universidad Catlica de Chile, Casilla 306, Santiago (Chile); Coppi, Paolo [Department of Astronomy, Yale University, New Haven, CT 06520-8101 (United States); Koviak, Kathleen, E-mail: rcartier@das.uchile.cl [Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 911901 (United States)

    2014-07-01

    We present well-sampled UBVRIJHK photometry of SN 2002fk starting 12 days before maximum light through 122 days after peak brightness, along with a series of 15 optical spectra from 4 to +95 days since maximum. Our observations show the presence of C II lines in the early-time spectra of SN 2002fk, expanding at 11,000 km s{sup 1} and persisting until 8 days past maximum light with a velocity of ?9000 km s{sup 1}. SN 2002fk is characterized by a small velocity gradient of v-dot {sub Si} {sub II}=26 km s{sup 1} day{sup 1}, possibly caused by an off-center explosion with the ignition region oriented toward the observer. The connection between the viewing angle of an off-center explosion and the presence of C II in the early-time spectrum suggests that the observation of C II could be also due to a viewing angle effect. Adopting the Cepheid distance to NGC 1309 we provide the first H {sub 0} value based on near-infrared (near-IR) measurements of a Type Ia supernova (SN) between 63.0 0.8 (3.4 systematic) and 66.7 1.0 (3.5 systematic) km s{sup 1} Mpc{sup 1}, depending on the absolute magnitude/decline rate relationship adopted. It appears that the near-IR yields somewhat lower (6%-9%) H {sub 0} values than the optical. It is essential to further examine this issue by (1) expanding the sample of high-quality near-IR light curves of SNe in the Hubble flow, and (2) increasing the number of nearby SNe with near-IR SN light curves and precise Cepheid distances, which affords the promise to deliver a more precise determination of H {sub 0}.

  5. THE DETONATION MECHANISM OF THE PULSATIONALLY ASSISTED GRAVITATIONALLY CONFINED DETONATION MODEL OF Type Ia SUPERNOVAE

    SciTech Connect (OSTI)

    Jordan, G. C. IV; Graziani, C.; Weide, K.; Norris, J.; Hudson, R.; Lamb, D. Q.; Fisher, R. T.; Townsley, D. M.; Meakin, C.; Reid, L. B.

    2012-11-01

    We describe the detonation mechanism composing the 'pulsationally assisted' gravitationally confined detonation (GCD) model of Type Ia supernovae. This model is analogous to the previous GCD model reported in Jordan et al.; however, the chosen initial conditions produce a substantively different detonation mechanism, resulting from a larger energy release during the deflagration phase. The resulting final kinetic energy and {sup 56}Ni yields conform better to observational values than is the case for the 'classical' GCD models. In the present class of models, the ignition of a deflagration phase leads to a rising, burning plume of ash. The ash breaks out of the surface of the white dwarf, flows laterally around the star, and converges on the collision region at the antipodal point from where it broke out. The amount of energy released during the deflagration phase is enough to cause the star to rapidly expand, so that when the ash reaches the antipodal point, the surface density is too low to initiate a detonation. Instead, as the ash flows into the collision region (while mixing with surface fuel), the star reaches its maximally expanded state and then contracts. The stellar contraction acts to increase the density of the star, including the density in the collision region. This both raises the temperature and density of the fuel-ash mixture in the collision region and ultimately leads to thermodynamic conditions that are necessary for the Zel'dovich gradient mechanism to produce a detonation. We demonstrate feasibility of this scenario with three three-dimensional (3D), full star simulations of this model using the FLASH code. We characterized the simulations by the energy released during the deflagration phase, which ranged from 38% to 78% of the white dwarf's binding energy. We show that the necessary conditions for detonation are achieved in all three of the models.

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

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  7. MID-IR SPECTRA OF TYPE Ia SN 2014J IN M82 SPANNING THE FIRST 4 MONTHS

    SciTech Connect (OSTI)

    Telesco, Charles M.; Li, Dan; Barnes, Peter J.; Mariñas, Naibí; Zhang, Han; Höflich, Peter; Álvarez, Carlos; Fernández, Sergio; Rebolo, Rafael; Hough, James H.; Levenson, N. A.; Pantin, Eric; Roche, Patrick E-mail: phoeflich77@gmail.com

    2015-01-10

    We present a time series of 8-13 μm spectra and photometry for SN 2014J obtained 57, 81, 108, and 137 days after the explosion using CanariCam on the Gran Telescopio Canarias. This is the first mid-IR time series ever obtained for a Type Ia supernova (SN Ia). These observations can be understood within the framework of the delayed detonation model and the production of ∼0.6 M {sub ☉} of {sup 56}Ni, consistent with the observed brightness, the brightness decline relation, and the γ-ray fluxes. The [Co III] line at 11.888 μm is particularly useful for evaluating the time evolution of the photosphere and measuring the amount of {sup 56}Ni and thus the mass of the ejecta. Late-time line profiles of SN 2014J are rather symmetric and not shifted in the rest frame. We see argon emission, which provides a unique probe of mixing in the transition layer between incomplete burning and nuclear statistical equilibrium. We may see [Fe III] and [Ni IV] emission, both of which are observed to be substantially stronger than indicated by our models. If the latter identification is correct, then we are likely observing stable Ni, which might imply central mixing. In addition, electron capture, also required for stable Ni, requires densities larger than ∼1 × 10{sup 9} g cm{sup –3}, which are expected to be present only in white dwarfs close to the Chandrasekhar limit. This study demonstrates that mid-IR studies of SNe Ia are feasible from the ground and provide unique information, but it also indicates the need for better atomic data.

  8. Systematic uncertainties associated with the cosmological analysis of the first Pan-STARRS1 type Ia supernova sample

    SciTech Connect (OSTI)

    Scolnic, D.; Riess, A.; Brout, D.; Rodney, S. [Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218 (United States); Rest, A. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Huber, M. E.; Tonry, J. L. [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States); Foley, R. J.; Chornock, R.; Berger, E.; Soderberg, A. M.; Stubbs, C. W.; Kirshner, R. P.; Challis, P.; Czekala, I.; Drout, M. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Narayan, G. [Department of Physics, Harvard University, 17 Oxford Street, Cambridge, MA 02138 (United States); Smartt, S. J.; Botticella, M. T. [Astrophysics Research Centre, School of Mathematics and Physics, Queens University Belfast, Belfast BT7 1NN (United Kingdom); Schlafly, E. [Max Planck Institute for Astronomy, Konigstuhl 17, D-69117 Heidelberg (Germany); and others

    2014-11-01

    We probe the systematic uncertainties from the 113 Type Ia supernovae (SN Ia) in the Pan-STARRS1 (PS1) sample along with 197 SN Ia from a combination of low-redshift surveys. The companion paper by Rest et al. describes the photometric measurements and cosmological inferences from the PS1 sample. The largest systematic uncertainty stems from the photometric calibration of the PS1 and low-z samples. We increase the sample of observed Calspec standards from 7 to 10 used to define the PS1 calibration system. The PS1 and SDSS-II calibration systems are compared and discrepancies up to ?0.02 mag are recovered. We find uncertainties in the proper way to treat intrinsic colors and reddening produce differences in the recovered value of w up to 3%. We estimate masses of host galaxies of PS1 supernovae and detect an insignificant difference in distance residuals of the full sample of 0.037 0.031 mag for host galaxies with high and low masses. Assuming flatness and including systematic uncertainties in our analysis of only SNe measurements, we find w =?1.120{sub ?0.206}{sup +0.360}(Stat){sub ?0.291}{sup +0.269}(Sys). With additional constraints from Baryon acoustic oscillation, cosmic microwave background (CMB) (Planck) and H {sub 0} measurements, we find w=?1.166{sub ?0.069}{sup +0.072} and ?{sub m}=0.280{sub ?0.012}{sup +0.013} (statistical and systematic errors added in quadrature). The significance of the inconsistency with w = 1 depends on whether we use Planck or Wilkinson Microwave Anisotropy Probe measurements of the CMB: w{sub BAO+H0+SN+WMAP}=?1.124{sub ?0.065}{sup +0.083}.

  9. Nearby Supernova Factory Observations of SN 2005gj: Another TypeIa Supernova in a Massive Circumstellar Envelope

    SciTech Connect (OSTI)

    Aldering, G.; Antilogus, P.; Bailey, S.; Baltay, C.; Bauer, A.; Blanc, N.; Bongard, S.; Copin, Y.; Gangler, E.; Gilles, S.; Kessler, R.; Kocevski, D.; Lee, B.C.; Loken, S.; Nugent, P.; Pain, R.; Pecontal, E.; Pereira, R.; Perlmutter, S.; Rabinowitz, D.; Rigaudier, G.; Scalzo, R.; Smadja, G.; Thomas, R.C.; Wang, L.; Weaver, B.A.; Rabinowitz, D.; Bauer, A.

    2006-06-01

    We report the independent discovery and follow-up observations of supernova 2005gj by the Nearby Supernova Factory. This is the second confirmed case of a ''hybrid'' Type Ia/IIn supernova, which like the prototype SN 2002ic, we interpret as the explosion of a white dwarf interacting with a circumstellar medium. Our early-phase photometry of SN 2005gj shows that the strength of the interaction between the supernova ejecta and circumstellar material is much stronger than for SN 2002ic. Our .rst spectrum shows a hot continuum with broad and narrow H{alpha} emission. Later spectra, spanning over 4 months from outburst, show clear Type Ia features combined with broad and narrow H{gamma}, H{beta},H{alpha} and He I {lambda}{lambda}5876,7065 in emission. At higher resolution, P Cygni profiles are apparent. Surprisingly, we also observe an inverted P Cygni profile for [O III] {lambda}5007. We find that the lightcurve and measured velocity of the unshocked circumstellar material imply mass loss as recently as 8 years ago. This is in contrast to SN 2002ic, for which an inner cavity in the circumstellar material was inferred. Within the context of the thin-shell approximation, the early lightcurve is well-described by a flat radial density profile for the circumstellar material. However, our decomposition of the spectra into Type Ia and shock emission components allows for little obscuration of the supernova, suggesting an aspherical or clumpy distribution for the circumstellar material. We suggest that the emission line velocity profiles arise from electron scattering rather than the kinematics of the shock. This is supported by the inferred high densities, and the lack of evidence for evolution in the line widths. Ground- and space-based photometry, and Keck spectroscopy, of the host galaxy are used to ascertain that the host galaxy has low metallicity (Z/Z{sub {circle_dot}} < 0.3; 95% confidence) and that this galaxy is undergoing a significant star formation event that began roughly 200 {+-} 70 Myr ago. We discuss the implications of these observations for progenitor models and cosmology using Type Ia supernovae.

  10. DISPLAYING THE HETEROGENEITY OF THE SN 2002cx-LIKE SUBCLASS OF TYPE Ia SUPERNOVAE WITH OBSERVATIONS OF THE Pan-STARRS-1 DISCOVERED SN 2009ku

    SciTech Connect (OSTI)

    Narayan, G.; Foley, R. J.; Berger, E.; Chornock, R.; Rest, A.; Soderberg, A. M.; Kirshner, R. P.; Botticella, M. T.; Smartt, S.; Valenti, S.; Huber, M. E.; Scolnic, D.; Grav, T.; Burgett, W. S.; Chambers, K. C.; Flewelling, H. A.; Gates, G.; Kaiser, N.; Magnier, E. A.; Morgan, J. S. E-mail: rfoley@cfa.harvard.edu

    2011-04-10

    SN 2009ku, discovered by Pan-STARRS-1, is a Type Ia supernova (SN Ia), and a member of the distinct SN 2002cx-like class of SNe Ia. Its light curves are similar to the prototypical SN 2002cx, but are slightly broader and have a later rise to maximum in g. SN 2009ku is brighter ({approx}0.6 mag) than other SN 2002cx-like objects, peaking at M{sub V} = -18.4 mag, which is still significantly fainter than typical SNe Ia. SN 2009ku, which had an ejecta velocity of {approx}2000 km s{sup -1} at 18 days after maximum brightness, is spectroscopically most similar to SN 2008ha, which also had extremely low-velocity ejecta. However, SN 2008ha had an exceedingly low luminosity, peaking at M{sub V} = -14.2 mag, {approx}4 mag fainter than SN 2009ku. The contrast of high luminosity and low ejecta velocity for SN 2009ku is contrary to an emerging trend seen for the SN 2002cx class. SN 2009ku is a counterexample of a previously held belief that the class was more homogeneous than typical SNe Ia, indicating that the class has a diverse progenitor population and/or complicated explosion physics. As the first example of a member of this class of objects from the new generation of transient surveys, SN 2009ku is an indication of the potential for these surveys to find rare and interesting objects.

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  12. A Chandrasekhar mass progenitor for the Type Ia supernova remnant 3C 397 from the enhanced abundances of nickel and manganese

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

    Yamaguchi, Hiroya; Badenes, Carles; Foster, Adam R.; Bravo, Eduardo; Williams, Brian J.; Maeda, Keiichi; Nobukawa, Masayoshi; Eriksen, Kristoffer A.; Brickhouse, Nancy S.; Petre, Robert; et al

    2015-03-12

    Despite decades of intense efforts, many fundamental aspects of Type Ia supernovae (SNe Ia) remain elusive. One of the major open questions is whether the mass of an exploding white dwarf (WD) is close to the Chandrasekhar limit. Here, we report the detection of strong K-shell emission from stable Fe-peak elements in the Suzaku X-ray spectrum of the Type Ia supernova remnant (SNR) 3C 397. The high Ni/Fe and Mn/Fe mass ratios (0.11–0.24 and 0.018–0.033, respectively) in the hot plasma component that dominates the K-shell emission lines indicate a degree of neutronization in the supernova ejecta that can only bemore » achieved by electron capture in the dense cores of exploding WDs with a near-Chandrasekhar mass. This suggests a single-degenerate origin for 3C 397, since Chandrasekhar mass progenitors are expected naturally if the WD accretes mass slowly from a companion. Altogether with other results supporting the double-degenerate scenario, our work adds to the mounting evidence that both progenitor channels make a significant contribution to the SN Ia rate in star-forming galaxies.« less

  13. Cosmological constraints from measurements of type Ia supernovae discovered during the first 1.5 yr of the Pan-STARRS1 survey

    SciTech Connect (OSTI)

    Rest, A. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Scolnic, D.; Riess, A.; Rodney, S.; Brout, D. [Department of Physics and Astronomy, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218 (United States); Foley, R. J.; Chornock, R.; Berger, E.; Soderberg, A. M.; Stubbs, C. W.; Kirshner, R. P.; Challis, P.; Czekala, I.; Drout, M. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Huber, M. E.; Tonry, J. L. [Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States); Narayan, G. [Department of Physics, Harvard University, 17 Oxford Street, Cambridge, MA 02138 (United States); Smartt, S. J. [Astrophysics Research Centre, School of Mathematics and Physics, Queens University Belfast, Belfast BT71NN (United Kingdom); Schlafly, E. [Max Planck Institute for Astronomy, Knigstuhl 17, D-69117 Heidelberg (Germany); Botticella, M. T. [INAF-Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, I-80131 Napoli (Italy); and others

    2014-11-01

    We present griz {sub P1} light curves of 146 spectroscopically confirmed Type Ia supernovae (SNe Ia; 0.03 < z < 0.65) discovered during the first 1.5 yr of the Pan-STARRS1 Medium Deep Survey. The Pan-STARRS1 natural photometric system is determined by a combination of on-site measurements of the instrument response function and observations of spectrophotometric standard stars. We find that the systematic uncertainties in the photometric system are currently 1.2% without accounting for the uncertainty in the Hubble Space Telescope Calspec definition of the AB system. A Hubble diagram is constructed with a subset of 113 out of 146 SNe Ia that pass our light curve quality cuts. The cosmological fit to 310 SNe Ia (113 PS1 SNe Ia + 222 light curves from 197 low-z SNe Ia), using only supernovae (SNe) and assuming a constant dark energy equation of state and flatness, yields w=?1.120{sub ?0.206}{sup +0.360}(Stat){sub ?0.291}{sup +0.269}(Sys). When combined with BAO+CMB(Planck)+H {sub 0}, the analysis yields ?{sub M}=0.280{sub ?0.012}{sup +0.013} and w=?1.166{sub ?0.069}{sup +0.072} including all identified systematics. The value of w is inconsistent with the cosmological constant value of 1 at the 2.3? level. Tension endures after removing either the baryon acoustic oscillation (BAO) or the H {sub 0} constraint, though it is strongest when including the H {sub 0} constraint. If we include WMAP9 cosmic microwave background (CMB) constraints instead of those from Planck, we find w=?1.124{sub ?0.065}{sup +0.083}, which diminishes the discord to <2?. We cannot conclude whether the tension with flat ?CDM is a feature of dark energy, new physics, or a combination of chance and systematic errors. The full Pan-STARRS1 SN sample with ?three times as many SNe should provide more conclusive results.

  14. No X-rays from the very nearby type Ia SN 2014J: Constraints on its environment

    SciTech Connect (OSTI)

    Margutti, R.; Parrent, J.; Kamble, A.; Soderberg, A. M.; Milisavljevic, D.; Drout, M. R.; Kirshner, R. [Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138 (United States); Foley, R. J. [Astronomy Department, University of Illinois at Urbana-Champaign, 1002 W. Green Street, Urbana, IL 61801 (United States)

    2014-07-20

    Deep X-ray observations of the post-explosion environment around the very nearby Type Ia SN 2014J (d{sub L} = 3.5 Mpc) reveal no X-ray emission down to a luminosity L{sub x} < 7 10{sup 36} erg s{sup 1} (0.3-10 keV) at ?t ? 20 days after the explosion. We interpret this limit in the context of inverse Compton emission from upscattered optical photons by the supernova shock and constrain the pre-explosion mass-loss rate of the stellar progenitor system to be M-dot <10{sup ?9} M{sub ?} yr{sup ?1} (for wind velocity v{sub w} = 100 km s{sup 1}). Alternatively, the SN shock might be expanding into a uniform medium with density n{sub CSM} < 3 cm{sup 3}. These results rule out single-degenerate (SD) systems with steady mass loss until the terminal explosion and constrain the fraction of transferred material lost at the outer Lagrangian point to be ?1%. The allowed progenitors are (1) white dwarf-white dwarf progenitors, (2) SD systems with unstable hydrogen burning experiencing recurrent nova eruptions with recurrence time t < 300 yr, and (3) stars where the mass loss ceases before the explosion.

  15. ASYMMETRY IN THE OBSERVED METAL-RICH EJECTA OF THE GALACTIC TYPE IA SUPERNOVA REMNANT G299.22.9

    SciTech Connect (OSTI)

    Post, Seth; Park, Sangwook [Department of Physics, University of Texas at Arlington, Arlington, Box 19059, TX 76019 (United States); Badenes, Carles [Department of Physics and Astronomy and Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT-PACC), University of Pittsburgh, 3941 OHara Street, Pittsburgh, PA 15260 (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 [Department of Applied Physics, University of Miyazaki, 1-1 Gakuen Kibana-dai Nishi, Miyazaki 889-2192 (Japan); Slane, Patrick O., E-mail: seth.post@mavs.uta.edu, E-mail: badenes@pitt.edu, E-mail: burrows@astro.psu.edu, E-mail: jph@physics.rutgers.edu, E-mail: mori@astro.miyazaki-u.ac.jp, E-mail: slane@cfa.harvard.edu [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

    2014-09-01

    We have performed a deep Chandra observation of the Galactic TypeIa supernova remnant G299.22.9. Here we report the initial results from our imaging and spectral analysis. The observed abundance ratios of the central ejecta are in good agreement with those predicted by delayed-detonation TypeIa supernovae models. We reveal inhomogeneous spatial and spectral structures of metal-rich ejecta in G299.22.9. The Fe/Si abundance ratio in the northern part of the central ejecta region is higher than that in the southern part. A significant continuous elongation of ejecta material extends out to the western outermost boundary of the remnant. In this western elongation, both the Si and Fe are enriched with a similar abundance ratio to that in the southern part of the central ejecta region. These structured distributions of metal-rich ejecta material suggest that this TypeIa supernova might have undergone a significantly asymmetric explosion and/or has been expanding into a structured medium.

  16. Expectations for the hard x-ray continuum and gamma-ray line fluxes from the typE IA supernova SN 2014J in M82

    SciTech Connect (OSTI)

    The, Lih-Sin [Department of Physics and Astronomy, Clemson University, SC 29634 (United States); Burrows, Adam, E-mail: tlihsin@clemson.edu, E-mail: burrows@astro.princeton.edu [Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)

    2014-05-10

    The hard X-ray continuum and gamma-ray lines from a Type Ia supernova dominate its integrated photon emissions and can provide unique diagnostics of the mass of the ejecta, the {sup 56}Ni yield and spatial distribution, its kinetic energy and expansion speed, and the mechanism of explosion. Such signatures and their time behavior 'X-ray' the bulk debris field in direct fashion, and do not depend on the ofttimes problematic and elaborate UV, optical, and near-infrared spectroscopy and radiative transfer that have informed the study of these events for decades. However, to date no hard photons have ever been detected from a Type Ia supernova in explosion. With the advent of the supernova SN 2014J in M82, at a distance of ?3.5 Mpc, this situation may soon change. Both NuSTAR and INTEGRAL have the potential to detect SN 2014J, and, if spectra and light curves can be measured, would usefully constrain the various explosion models published during the last ?30 yr. In support of these observational campaigns, we provide predictions for the hard X-ray continuum and gamma-line emissions for 15 Type Ia explosion models gleaned from the literature. The model set, containing as it does deflagration, delayed detonation, merger detonation, pulsational delayed detonation, and sub-Chandrasekhar helium detonation models, collectively spans a wide range of properties, and hence signatures. We provide a brief discussion of various diagnostics (with examples), but importantly make the spectral and line results available electronically to aid in the interpretation of the anticipated data.

  17. Type Ia Supernovae

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    that the universe is undergoing an accelerated expansion - a result which fits the General Relativity if a yet unknown form of "dark" energy is assumed to dominate the...

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  20. Gorchakova-IA

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    Google Rules of Behavior Form Google Rules of Behavior Form Google Rules of Behavior Form File Google Drive for Work Rules of Behavior Form More Documents & Publications Audit Report: DOE-OIG-16-12 Remote Access Options April 2014 Cybersecurity Awareness Campaign - Malware

    Atl anta, Georgia, March 19-23, 2001 1 Estimate of Horizontal Cloud Inhomogeneity Effect on Solar Radiative Fluxes for Conditions of Winter Zvenigorod Experiment I. A. Gorchakova, G. S. Golitsyn, and I. I. Mokhov

  1. THE EFFECT OF THE PRE-DETONATION STELLAR INTERNAL VELOCITY PROFILE ON THE NUCLEOSYNTHETIC YIELDS IN TYPE Ia SUPERNOVA

    SciTech Connect (OSTI)

    Kim, Yeunjin; Jordan, G. C. IV; Graziani, Carlo; Lamb, D. Q.; Truran, J. W.; Meyer, B. S.

    2013-07-01

    A common model of the explosion mechanism of Type Ia supernovae is based on a delayed detonation of a white dwarf. A variety of models differ primarily in the method by which the deflagration leads to a detonation. A common feature of the models, however, is that all of them involve the propagation of the detonation through a white dwarf that is either expanding or contracting, where the stellar internal velocity profile depends on both time and space. In this work, we investigate the effects of the pre-detonation stellar internal velocity profile and the post-detonation velocity of expansion on the production of {alpha}-particle nuclei, including {sup 56}Ni, which are the primary nuclei produced by the detonation wave. We perform one-dimensional hydrodynamic simulations of the explosion phase of the white dwarf for center and off-center detonations with five different stellar velocity profiles at the onset of the detonation. In order to follow the complex flows and to calculate the nucleosynthetic yields, approximately 10,000 tracer particles were added to every simulation. We observe two distinct post-detonation expansion phases: rarefaction and bulk expansion. Almost all the burning to {sup 56}Ni occurs only in the rarefaction phase, and its expansion timescale is influenced by pre-existing flow structure in the star, in particular by the pre-detonation stellar velocity profile. We find that the mass fractions of the {alpha}-particle nuclei, including {sup 56}Ni, are tight functions of the empirical physical parameter {rho}{sub up}/v{sub down}, where {rho}{sub up} is the mass density immediately upstream of the detonation wave front and v{sub down} is the velocity of the flow immediately downstream of the detonation wave front. We also find that v{sub down} depends on the pre-detonation flow velocity. We conclude that the properties of the pre-existing flow, in particular the internal stellar velocity profile, influence the final isotopic composition of burned matter produced by the detonation.

  2. OPTICAL AND NEAR-INFRARED POLARIMETRY OF HIGHLY REDDENED Type Ia SUPERNOVA 2014J: PECULIAR PROPERTIES OF DUST IN M82

    SciTech Connect (OSTI)

    Kawabata, K. S.; Akitaya, H.; Itoh, R.; Moritani, Y. [Hiroshima Astrophysical Science Center, Hiroshima University, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526 (Japan); Yamanaka, M. [Department of Physics, Faculty of Science and Engineering, Konan University, Okamoto, Kobe, Hyogo 658-8501 (Japan); Maeda, K.; Nogami, D. [Department of Astronomy, Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502 (Japan); Ui, T.; Kawabata, M.; Mori, K.; Takaki, K.; Ueno, I.; Chiyonobu, S.; Harao, T.; Matsui, R.; Miyamoto, H.; Nagae, O. [Department of Physical Science, Hiroshima University, Kagamiyama, Higashi-Hiroshima 739-8526 (Japan); Nomoto, K.; Suzuki, N. [Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo, Kashiwa, Chiba 277-8583 (Japan); Tanaka, M., E-mail: kawabtkj@hiroshima-u.ac.jp [National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588 (Japan); and others

    2014-11-01

    We present optical and near-infrared multi-band linear polarimetry of the highly reddened Type Ia supernova (SN) 2014J that appeared in M82. SN 2014J exhibits large polarization at shorter wavelengths, e.g., 4.8% in the B band, which decreases rapidly at longer wavelengths, while the position angle of the polarization remains at approximately 40 over the observed wavelength range. These polarimetric properties suggest that the observed polarization is likely predominantly caused by the interstellar dust within M82. Further analysis shows that the polarization peaks at a wavelengths much shorter than those obtained for the Galactic dust. The wavelength dependence of the polarization can be better described by an inverse power law rather than by the Serkowski law for Galactic interstellar polarization. These points suggest that the nature of the dust in M82 may be different from that in our Galaxy, with polarizing dust grains having a mean radius of <0.1 ?m.

  3. QER SECOND INSTALLMENT REGIONAL MEETING--DES MOINES, IOWA | Department of

    Office of Environmental Management (EM)

    BOSTON, MA QER SECOND INSTALLMENT REGIONAL MEETING--BOSTON, MA MEETING DATE AND LOCATION Friday, April 15, 2016 Doors open: 8:30 AM; Program begins: 9:30 AM Marriott Long Wharf (Salons D, E, F, L) 296 State Street Boston, MA 02109 Watch the April 15th Boston regional meeting here. MEETING INFORMATION The U.S. Department of Energy Secretary Ernest Moniz and Dr. John P. Holdren, Director of the White House Office of Science will host a public stakeholder meeting on the second installment of the

  4. TYPE Ia SUPERNOVA REMNANT SHELL AT z = 3.5 SEEN IN THE THREE SIGHTLINES TOWARD THE GRAVITATIONALLY LENSED QSO B1422+231

    SciTech Connect (OSTI)

    Hamano, Satoshi; Kobayashi, Naoto [Institute of Astronomy, University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo 181-0015 (Japan); Kondo, Sohei [Koyama Astronomical Observatory, Kyoto-Sangyo University, Motoyama, Kamigamo, Kita-Ku, Kyoto 603-8555 (Japan); Tsujimoto, Takuji [National Astronomical Observatory of Japan and Department of Astronomical Science, Graduate University for Advanced Studies, 2-21-1 Osawa, Mitaka, Tokyo 181-0015 (Japan); Okoshi, Katsuya [Faculty of Industrial Science and Technology, Tokyo University of Science, 102-1 Tomino, Oshamanbe, Hokkaido 049-3514 (Japan); Shigeyama, Toshikazu, E-mail: hamano@ioa.s.u-tokyo.ac.jp [Research Center for the Early Universe, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033 (Japan)

    2012-08-01

    Using the Subaru 8.2 m Telescope with the IRCS Echelle spectrograph, we obtained high-resolution (R = 10,000) near-infrared (1.01-1.38 {mu}m) spectra of images A and B of the gravitationally lensed QSO B1422+231 (z = 3.628) consisting of four known lensed images. We detected Mg II absorption lines at z = 3.54, which show a large variance of column densities ({approx}0.3 dex) and velocities ({approx}10 km s{sup -1}) between sightlines A and B with a projected separation of only 8.4h{sup -1}{sub 70} pc at that redshift. This is the smallest spatial structure of the high-z gas clouds ever detected after Rauch et al. found a 20 pc scale structure for the same z = 3.54 absorption system using optical spectra of images A and C. The observed systematic variances imply that the system is an expanding shell as originally suggested by Rauch et al. By combining the data for three sightlines, we managed to constrain the radius and expansion velocity of the shell ({approx}50-100 pc, 130 km s{sup -1}), concluding that the shell is truly a supernova remnant (SNR) rather than other types of shell objects, such as a giant H II region. We also detected strong Fe II absorption lines for this system, but with much broader Doppler width than that of {alpha}-element lines. We suggest that this Fe II absorption line originates in a localized Fe II-rich gas cloud that is not completely mixed with plowed ambient interstellar gas clouds showing other {alpha}-element low-ion absorption lines. Along with the Fe richness, we conclude that the SNR is produced by an SN Ia explosion.

  5. DOE - Office of Legacy Management -- Rocky Benefits

    Office of Legacy Management (LM)

    Colorado > Rocky Benefits Rocky Flats Site, Colorado Benefits Administration Rocky Flats Benefits Administration Rocky Flats Benefits Center P.O. Box 10361 Des Moines, IA 50306-0361 Phone - (866) 296-5036 Fax - (888) 501-9768 Medical and Life Insurance Administration Pension Administration General Benefits Questions Death Reporting Address Changes Benefits Issue Resolutions Leanna Nighswonger (509) 373-1419 Leanna_c_Nighswonger@rl.gov Last Updated: 4/11

  6. IA News Archive | Department of Energy

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

    17, 2012 Deputy Secretary Poneman Statement on Second Meeting of the U.S. - South Africa Bilateral Energy Dialogue U.S. Deputy Secretary of Energy Daniel Poneman and South...

  7. Table 3. Top five retailers of electricity, with end use sectors...

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

    Iowa" "megawatthours" ,"Entity","Type of provider","All sectors","Residential","Commercial","Industrial","Transportation" 1,"MidAmerican Energy Co","Investor-owned",20585461,570529...

  8. Tax Credits, Rebates & Savings | Department of Energy

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

    Building Insulation, Roofs, Comprehensive MeasuresWhole Building, Other EE, Personal Computing Equipment, Pool Pumps MidAmerican Energy (Electric)- Commercial EnergyAdvantage...

  9. Tax Credits, Rebates & Savings | Department of Energy

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

    pending approval, Other EE, Food Service Equipment, Vending Machine Controls, Personal Computing Equipment, LED Lighting, Commercial Refrigeration Equipment MidAmerican Energy...

  10. Portfolio Projects | Department of Energy

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

    TITLE XVII Photovoltaic Solar NRG Solar, LLC & MidAmerican Renewables, LLC Yuma County, Arizona Loan Guarantee 967 Million Aug 2011 ALAMOSA TITLE XVII Photovoltaic Solar ...

  11. Electricity Advisory Committee

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

    Thomas Cornell University Vickie Van Zandt Bonneville Power Administration Bruce Walker National Grid Jonathan Weisgall MidAmerican Energy Malcolm Woolf Maryland Energy ...

  12. Tax Credits, Rebates & Savings | Department of Energy

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

    Motor VFDs Tax Credits, Rebates & Savings Tax Credits, Rebates & Savings MidAmerican Energy (Electric)- Commercial EnergyAdvantage Rebate Program Rebates must be submitted...

  13. Tax Credits, Rebates & Savings | Department of Energy

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

    Rebate Program MidAmerican Energy offers a variety of incentives for commercial natural gas customers to improve the energy efficiency of facilities. Rebates are...

  14. Tax Credits, Rebates & Savings | Department of Energy

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

    approval, Other EE, Food Service Equipment, Vending Machine Controls, Commercial Cooking Equipment, LED Lighting, Commercial Refrigeration Equipment MidAmerican Energy...

  15. Bishop Hill II | Open Energy Information

    Open Energy Info (EERE)

    Owner MidAmerican Energy Developer Ivenergy Energy Purchaser Ameren Illinois Location Cambridge IL Coordinates 41.24438513, -90.09338379 Show Map Loading map......

  16. Pinyon Pines I | Open Energy Information

    Open Energy Info (EERE)

    Scale Wind Facility Status In Service Owner MidAmerican Energy Developer Terra-Gen Power Energy Purchaser Southern California Edison Co Location Tehachapi Pass CA...

  17. Pinyon Pines II | Open Energy Information

    Open Energy Info (EERE)

    Scale Wind Facility Status In Service Owner MidAmerican Energy Developer Terra-Gen Power Energy Purchaser Southern California Edison Co Location Tehachapi Pass CA...

  18. DOE - Office of Legacy Management -- Mound_Benefits

    Office of Legacy Management (LM)

    Ohio > Mound_Benefits Mound, Ohio, Site Former Workers' Employment Verification and Benefits Administration Contractor Employment Verification Mercer, Mound Benefits Center (866) 296-5036 Medical and Life Insurance for Former EG&G, BWXTO, and CH2M HILL Employees For questions about health insurance coverage and/or dependent information, life insurance and/or beneficiaries, etc.: Mound Benefits Center P.O. Box 10361 Des Moines, IA 50306-0361 Benefit Center Website (866) 296-5036 9:00 a.m.

  19. IA-HySafe International Conference on Hydrogen Safety (ICHS)

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

    AC22-91PC91056 Molecular Catalytic Hydrogenation of Aromatic Hydrocarbons and the Hydrotreating of Coal Liquids Final Report For U. S. Department of Energy Pittsburgh Energy Technology Center Pittsburgh, Pennsylvania By Shiyong Yang and Leon M. Stock Department of Chemistry The University of Chicago Chicago, Illinois May 1996 Work Performed Under Contract No. DE-AC22-91PC91056 - i - Table of Contents Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  20. CEPHEID CALIBRATIONS OF MODERN TYPE Ia SUPERNOVAE: IMPLICATIONS...

    Office of Scientific and Technical Information (OSTI)

    In the second paper, we present observations of the ... further mitigating systematic errors along the ... Country of Publication: United States Language: English Subject: ...

  1. Type Ia Supernova Hubble Residuals and Host-Galaxy Properties...

    Office of Scientific and Technical Information (OSTI)

    Tao, C.; Thomas, R. C.; Weaver, B. A. 79 ASTRONOMY AND ASTROPHYSICS distance scale, supernovae: general distance scale, supernovae: general Kim et al. (2013) K13 introduced a...

  2. Type Ia Supernova Hubble Residuals and Host-Galaxy Properties...

    Office of Scientific and Technical Information (OSTI)

    Kim et al. (2013) K13 introduced a new methodology for determining peak- brightness ... Resource Relation: Journal Name: Astrophysical Journal Research Org: Ernest Orlando ...

  3. Flames in Type Ia Supernova: Deflagration-Detonation Transition...

    Office of Scientific and Technical Information (OSTI)

    Language: English Word Cloud More Like This Full Text Journal Articles Find in Google Scholar Find in Google Scholar Search WorldCat Search WorldCat to find libraries that may hold ...

  4. Closest Type Ia Supernova in Decades Solves a Cosmic Mystery

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

    observations of SN 2011fe were carried out at the Liverpool Telescope at La Palma in the Canary Islands, followed within hours by the Shane Telescope at Lick Observatory in...

  5. Improved Distances to Type Ia Supernovae withMulticolor Light...

    Office of Scientific and Technical Information (OSTI)

    We also develop a simple model to disentangle intrinsic color variations and reddening by ... Subject: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COLOR; DIPOLES; DUSTS; ...

  6. Improved Distances to Type Ia Supernovae withMulticolor Light...

    Office of Scientific and Technical Information (OSTI)

    This site is a product of DOE's Office of Scientific and Technical Information (OSTI) and ... We present an updated version of the Multicolor Light Curve Shape method to measure ...

  7. Improved Constraints on Type Ia Supernova Host Galaxy Properties...

    Office of Scientific and Technical Information (OSTI)

    Astrophys. ; Smith, Mathew ; Cape Town U. ; Bassett, Bruce ; South African Astron. Observ. Cape Town U., Dept. Math. African Inst. Math. Sci., Cape Town ; Frieman, Joshua A. ; ...

  8. Microsoft PowerPoint - IEEE IAS PES 102313.pptx

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

    ... - Voltage and frequency control - VoltVAR balance - Automated load balancing Demand response & consumer behavior Outage management Remote services (e.g., reading, connection) ...

  9. New approaches for modeling type Ia supernovae (Conference) ...

    Office of Scientific and Technical Information (OSTI)

    DOE Contract Number: DE-AC02-05CH11231 Resource Type: Conference Resource Relation: Conference: SciDAC 2006, Denver, CO, 25-29 June2006 Publisher: Institute of Physics, ...

  10. Type Ia Supernova Hubble Residuals and Host-Galaxy Properties...

    Office of Scientific and Technical Information (OSTI)

    The K13 Hubble residual step with host mass is 0.013 ? 0.031 mag for a supernova subsample with data coverage corresponding to the K13 training; at ? 1?, the step is not ...

  11. A Chandrasekhar mass progenitor for the Type Ia supernova remnant...

    Office of Scientific and Technical Information (OSTI)

    Altogether with other results supporting the double-degenerate scenario, our work adds to the mounting evidence that both progenitor channels make a significant contribution to the ...

  12. Solar Renewable Energy Credits

    Broader source: Energy.gov [DOE]

    Note: The Illinois Power Agency's proposed 2016 procurement includes one-year SREC procurements of 34,207 SRECs for Ameren, 69,866 SRECs for ComEd, and 13,225 SRECs for MidAmerican. It also...

  13. New York Event to Show Bi-Partisan, International Support for...

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

    Among companies participating are: Glitnir Bank, Ormat, Google.org, MidAmerican Energy, EGS Inc., ThermaSource, U.S. Renewables Group, Merrill Lynch, GeothermEx, UTC Power, ...

  14. Member Case Studies: LED Street Lighting Programs in Algona (IA), Asheville

    Energy Savers [EERE]

    Melvin G. Williams, Jr. About Us Melvin G. Williams, Jr. - Former Associate Deputy Secretary Melvin G. Williams, Jr. Melvin G. Williams Jr., Vice Admiral, U.S. Navy (retired), served as the Associate Deputy Secretary of Energy until February 2013. As a Presidential Appointee at the U.S. Department of Energy, he served as the key leader responsible for the Department's management and operational excellence. He reported directly to the Secretary of Energy and the Deputy Secretary, and drove

  15. Type Ia supernova rate measurements to redshift 2.5 from CANDELS...

    Office of Scientific and Technical Information (OSTI)

    ... EXPLOSIONS; GALAXIES; LIMITING VALUES; NEAR INFRARED RADIATION; ORBITS; PHOTOMETRY; RED SHIFT; SPACE; SPECTROSCOPY; SUPERNOVAE; TELESCOPES; TIME DELAY; UNIVERSE Word ...

  16. IA REP0 SAND85-2809 Unlimited Release UC-92A

    Office of Scientific and Technical Information (OSTI)

    ... technique which uses propellants t o obtain controlled fracture initiation and extension. ... Computer modeling of HBGF a t Sandia6 shows that HEGF's ability to create multiple ...

  17. A SEARCH FOR NEW CANDIDATE SUPER-CHANDRASEKHAR-MASS TYPE Ia SUPERNOVAE...

    Office of Scientific and Technical Information (OSTI)

    We interpret the velocity plateaus as evidence for a reverse-shock shell in the ejecta formed by interaction at early times with a compact envelope of surrounding material, as ...

  18. Hubble Residuals of Nearby SN Ia Are Correlated with Host Galaxy...

    Office of Scientific and Technical Information (OSTI)

    United States Language: English Subject: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CALIBRATION; COSMOLOGY; DUSTS; GALAXIES; LUMINOSITY; SKY; TESTING ...

  19. NEAR-ULTRAVIOLET PROPERTIES OF A LARGE SAMPLE OF TYPE Ia SUPERNOVAE...

    Office of Scientific and Technical Information (OSTI)

    Hicken, Malcolm ; Kirshner, Robert P. ; Challis, Peter J. 6 ; Mazzali, Paolo 7 ; Schmidt, Brian P. 8 + Show Author Affiliations Steward Observatory, University of Arizona, ...

  20. Type Ia supernovae from merging white dwarfs. II. Post-merger...

    Office of Scientific and Technical Information (OSTI)

    Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA (United States) Department of Physics and Department of Astronomy, University of California, Santa ...

  1. VARIABLE SODIUM ABSORPTION IN A LOW-EXTINCTION TYPE Ia SUPERNOVA...

    Office of Scientific and Technical Information (OSTI)

    ... Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, ...Lick Observatory, Univ. of California, Santa Cruz, CA 95064 (United States) Dept. of ...

  2. Rock Creek I: 48-core iA Tera Scale Prototype

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

    to make sure we don't miss any great ideas. Hence, my views are by design far "off the roadmap". Here is what I'd like to talk about * Please stop using acronyms and undefined...

  3. CfA4: LIGHT CURVES FOR 94 TYPE Ia SUPERNOVAE (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    Authors: Hicken, Malcolm ; Challis, Peter ; Kirshner, Robert P. ; Bakos, Gaspar ; Berlind, Perry ; Brown, Warren R. ; Caldwell, Nelson ; Calkins, Mike ; Falco, Emilio ; Fernandez, ...

  4. Table 33. Oxygenated Motor Gasoline Prices by Grade, Sales Type...

    Gasoline and Diesel Fuel Update (EIA)

    - - - - - - - 1997 Average ... - - - - - - - - - - - - Subdistrict IA January ... - - - - - - - - - - - - February...

  5. CX-006500: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Magellan Des Moines Biodiesel Terminal ProjectCX(s) Applied: B5.1Date: 09/06/2011Location(s): Des Moines, IowaOffice(s): Energy Efficiency and Renewable Energy, Golden Field Office

  6. NASEO Midwest Regional Meeting

    Broader source: Energy.gov [DOE]

    The National Association of State Energy Officials (NASEO) is hosting its Midwest Regional Meeting in Des Moines, Iowa.

  7. JCS PHEV System Development | Department of Energy

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

    Program | Department of Energy 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 Moines Water Works have committed to participate in the Superior Energy Performance (SEP) program as the first members of a new program pilot. SEP recognizes facilities that meet the ISO 50001 global energy management standard and demonstrate improved energy performance. A third-party

  8. Phenotypic Data Collection and Sample Preparation for Genomics of Wood Formation and Cellulosic Biomass Traits in Sunflower: Ames, IA location.

    SciTech Connect (OSTI)

    Marek, Laura F.

    2011-06-17

    Three fields were planted in Ames in 2010, two association mapping fields, N3 and A, and a recombinant inbred line field, N13. Phenotype data and images were transferred to UGA to support genetic and genomic analyses of woody biomass-related traits.

  9. Automotive Stirling Engine Market and Industrial Readiness Program (MIRP). Final report for Phase IA, September 15, 1982-July 31, 1984

    SciTech Connect (OSTI)

    Not Available

    1984-08-01

    A brief history of the project is presented. Included in appendices are the scope of work, management and cost plans, major milestones, and the digital engine control spare parts' list. (MHR)

  10. Vehicle Technologies Office Merit Review 2014: International Energy Agency (IEA IA-AMT) International Characterization Methods (Agreement ID:26462)

    Broader source: Energy.gov [DOE]

    Presentation given by Oak Ridge National Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about International...

  11. Superfund Record of Decision (EPA Region 7): Vogel Paint and Wax, Maurice, IA. (First remedial action), September 1989. Final report

    SciTech Connect (OSTI)

    Not Available

    1989-09-20

    The Vogel Paint and Wax (VPW) site is an approximately two-acre disposal area two miles southwest of the town of Maurice, in Sioux County, Iowa. Adjacent land uses are primarily agricultural; however, several private residences are within one-quarter mile of the site. A surficial sand and gravel aquifer underlies the site and supplies nearby private wells and the Southern Sioux County Rural Water System, located a mile and one half southeast of the site. Paint sludge, resins, solvents, and other paint-manufacturing wastes were disposed of at the site between 1971 and 1979. VPW records indicate that approximately 43,000 gallons of aliphatic and aromatic hydrocarbons and 6,000 pounds of metals waste were buried at the site. The primary contaminants of concern affecting the soil and ground water are VOCs including benzene, toluene, and xylenes; and metals including chromium and lead. The selected remedial action for this site includes excavation of contaminated soil and separation of solid and liquid wastes; onsite bioremediation of 3,000 cubic yards of the contaminated soil in a fully contained surface impoundment unit, or onsite thermal treatment if soil contains high metal content; and stabilization of treated soil, if necessary to prevent leaching of metals, followed by disposal in the excavated area.

  12. LPO5-002-Proj-Poster-PV-AguaCal

    Energy Savers [EERE]

    AGUA CALIENTE By harnessing Arizona's abundant sunlight, Agua Caliente is demonstrating that photovoltaic solar can go big in the U.S. INVESTING in AMERICAN ENERGY OWNERS NRG Solar, LLC & MidAmerican Renewables, LLC LOCATION Yuma County, Arizona LOAN AMOUNT $967 Million ISSUANCE DATE August 2011 GENERATION CAPACITY 290 MW PROJECTED ANNUAL GENERATION 559,000 MWh CLIMATE BENEFIT 312,000 Metric Tons of CO 2 Prevented Annually

  13. --No Title--

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

    - - - - - - December... - - - - - - 1997 Average... - - - - - - Subdistrict IA January... - - - - - - February... - - - - - - March... - - - - - -...

  14. No Slide Title

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

    International Affairs (IA-1) Office of Resource Management (IA-10) . DAS for Africa, ... African and Middle Eastern Affairs (IA-22) DAS for Asia & the Americas (IA-30) Office of ...

  15. Iowa Department of Economic Development | Open Energy Information

    Open Energy Info (EERE)

    Department of Economic Development Jump to: navigation, search Name: Iowa Department of Economic Development Place: Des Moines, Iowa Zip: 50309 Product: Iowa economic development...

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

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

    City Hall in West Des Moines, Iowa Goes Green EECBG Success Story: Grant Improves ... of Oro Valley EECBG Success Story: Energy Upgrades to Save Small Arizona Town Big ...

  17. AgraGate Carbon Credits Corporation | Open Energy Information

    Open Energy Info (EERE)

    AgraGate Carbon Credits Corporation Jump to: navigation, search Name: AgraGate Carbon Credits Corporation Place: Des Moines, Iowa Zip: 50266 Product: Offset aggregators that work...

  18. 2016 High School Science Bowl Participating Teams | The Ames...

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

    (Bettendorf) Prince of Peace (Clinton) Regina (Iowa City) Roland-Story Shenandoah St. Albert (Council Bluffs) Union (La Porte City) Valley (West Des Moines) West Central Valley...

  19. Iowa Water and Wastewater Operators Seek SEP Certification in New Pilot Program

    Broader source: Energy.gov [DOE]

    The Des Moines Metropolitan Wastewater Reclamation Authority (WRA) and Des Moines Water Works have committed to participate in the Superior Energy Performance (SEP) program as the first members of a new program pilot. SEP recognizes facilities that meet the ISO 50001 global energy management standard and demonstrate improved energy performance.

  20. 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

  1. 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

  2. Targeted Energy Efficiency Expert Evaluation (E4) Report: Iowa City Federal Building and U.S. Post Office, Iowa City, IA

    SciTech Connect (OSTI)

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

    2013-03-01

    Final report summarizing Targeted E4 measures and energy savings analysis for the Iowa City Federal Building and Post Office.

  3. OES-IA Annex IV: Environmental Effects of Marine and Hydrokinetic Devices - Report from the Experts Workshop September 27th 28th 2010 Clontarf Castle, Dublin Ireland

    SciTech Connect (OSTI)

    Copping, Andrea E.; O'Toole, Michael J.

    2010-12-02

    An experts' workshop was convened in Dublin Ireland September 27th 28th 2010 in support of IEA Ocean Energy Systems Implementing Agreement Annex IV. PNNL was responsible for organizing the content of the workshop, overseeing the contractors (Irish Marine Institute) hosting the event, presenting material on Annex IV and materials applicable to the workshop intent. PNNL is also overseeing a contractor (Wave Energy Center/University of Plymouth WEC/UP) in the collection and analysis of the Annex IV data. Fifty-eight experts from 8 countries attended the workshop by invitation, spending two days discussing the needs of Annex IV. Presentations by DOE (background on Annex IV), PNNL (process for developing Annex IV; presentation of the draft database for PNNL project, plans for incorporating Annex IV data), WEC/UP on the environmental effect matrix, and four MHK developers (two from the UK, one from Ireland and one from Sweden; each discussing their own projects and lessons learned for measuring and mitigating environmental effects, as well as interactions with consenting [permitting] processes) helped provide background. The workshop participants worked part of the time in the large group and most of the time in four smaller breakout groups. Participants engaged in the process and provided a wealth of examples of MHK environmental work, particularly in the European nations. They provided practical and actionable advice on the following: Developing the Annex IV database, with specific uses and audiences Strong consensus that we should collect detailed metadata on available data sets, rather than attempting to draw in copious datasets. The participants felt there would then be an opportunity to then ask for specific set of data as needed, with specific uses and ownership of the data specified. This is particularly important as many data collected, particularly in Europe but also in Canada, are proprietary; developers were not comfortable with the idea of handing over all their environmental effects data, but all said they would entertain the request if they specifics were clear. The recommendation was to collect metadata via an online interactive form, taking no more than one hour to complete. Although the idea of cases representing the best practices was recognized as useful, the participants pointed out that there are currently so few MHK projects in the water, that any and all projects were appropriate to highlight as cases. There was also discomfort at the implication that best practices implied lesser practices; this being unhelpful to a new and emerging industry. Workshop participants were asked if they were willing to continue to engage in the Annex IV process; all expressed willingness. The workshop was successful in adequately addressing its objectives and through participation and interaction in the breakout sessions around the various topics. As a result of the workshop, many delegates are now better informed and have a greater understanding of the potential environmental effects of MHK devices on the marine environment. There is now a greater sense of understanding of the issues involved and consensus by those regulators, developers and scientists who attended the workshop. A strong network has also been built over the two days between European and US/Canadian technical experts in wave and tidal energy.

  4. On-farm production of fuel-alcohol in Mid-America technical and economic potential

    SciTech Connect (OSTI)

    Hohmann, M.A.

    1980-03-01

    Alcohol fuel production is suggested as an alternative to high energy costs for the Mid-American farmer. The steps involved in producing alcohol from biomass are reviewed. Fermentation equipment and procedures are readily available. The utilization of by-products for animal feeds is discussed. Combustion characteristics and chemical properties of ethanol are reviewed. Estimates are made of costs involved in alcohol production in the mid-west region. Regional agricultural consumption of gasoline is estimated and 3 scenarios are developed. Benefits of on-farm fuel production are outlined. (DMC)

  5. Part B - Requirements & Funding Information PART B - Requirements...

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

    ... IA, indicate whether Part A of the IA is attached or the location of Part A. For example, Part A could be located in the master file for IA number xxx at contracting office xxx. ...

  6. Part B - Requirements & Funding Information PART B - Requirements...

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

    IA, indicate whether Part A of the IA is attached or the location of Part A. For example, Part A could be located in the master file for IA number xxx at contracting office xxx. ...

  7. DOE - Office of Legacy Management -- Iowa State University Ames...

    Office of Legacy Management (LM)

    Site Operations: Produced uranium and thorium metal, recovered uranium scrap, and ... Radioactive Materials Handled: Uranium, Thorium IA.01-1 IA.01-4 IA.01-5 Radiological ...

  8. ,"Iowa Natural Gas Summary"

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

    ...20IA3","N3035IA3","N3045IA3" "Date","Natural Gas Citygate Price in Iowa (Dollars per Thousand Cubic Feet)","Iowa Price of Natural Gas Delivered to Residential Consumers (Dollars ...

  9. Mutual Insurance Company of West

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

    Step : On the right side of the homepage under "Identity The Protection," click on "Create Member Account." Once you log in, create an additional username and password to For more information call - - or visit ARAGLegalCenter.com. Limitations and exclusions apply. Insurance products are underwritten by ARAG Insurance Company of Des Moines, Iowa, GuideOne ® Mutual Insurance Company of West Des Moines, Iowa or GuideOne Specialty Mutual Insurance Company of West Des Moines,

  10. Member Case Studies: LED Street Lighting Programs in Algona ...

    Energy Savers [EERE]

    Member Case Studies: LED Street Lighting Programs in Algona (IA), Asheville (NC), and Boston (MA) Member Case Studies: LED Street Lighting Programs in Algona (IA), Asheville (NC), ...

  11. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    PHYSICS; ACCURACY; COLOR; COSMOLOGICAL CONSTANT; LUMINOSITY; PHOTOMETRY; SHAPE; SUPERNOVAE Astrophysics,ASTRO",,"We combine the CfA3 supernovae Type Ia (SN Ia) sample with...

  12. TITLE AUTHORS SUBJECT SUBJECT RELATED DESCRIPTION PUBLISHER AVAILABILI...

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    Univ of Oklahoma Univ of Oklahoma ASTRONOMY AND ASTROPHYSICS Dark Energy Type Ia supernovae radiative transfer Dark Energy Type Ia supernovae radiative transfer The progress...

  13. Pioneer Prairie II (09) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Wind Energy Developer Horizon Wind Energy Energy Purchaser Ameren Location Northeastern IA IA Coordinates 43.450321, -92.551074 Show Map Loading map... "minzoom":false,"mappi...

  14. Pioneer Prairie I (4Q08) Wind Farm | Open Energy Information

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    In Service Owner Horizon Developer Horizon Energy Purchaser Na Location Northeastern IA IA Coordinates 43.450321, -92.551074 Show Map Loading map... "minzoom":false,"mappi...

  15. DOE - Office of Legacy Management -- Bendix Aviation Corp Pioneer...

    Office of Legacy Management (LM)

    Corp Pioneer Div - IA 05 FUSRAP Considered Sites Site: BENDIX AVIATION CORP., PIONEER DIV. (IA.05 ) Eliminated from consideration under FUSRAP Designated Name: Not Designated...

  16. June 2012 Electrical Safety Occurrences

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

    to date have included the reduction of the number of active Issuing Authorities (IA), providing updated IA training, and requiring a Senior Review Board review and approval...

  17. DOE - Office of Legacy Management -- Ames Laboratory Research...

    Office of Legacy Management (LM)

    Ames Laboratory Research Reactor Facility - IA 03 FUSRAP Considered Sites Site: Ames Laboratory Research Reactor Facility (IA.03) Designated Name: Alternate Name: Location:...

  18. Exploration of tetrahedral structures in silicate cathodes using...

    Office of Scientific and Technical Information (OSTI)

    Author Affiliations Iowa State Univ., Ames, IA (United States) Xiamen Univ., Xiamen (China) Univ. of Science and Technology of China, Hefei (China) Ames Lab., Ames, IA (United...

  19. European Commission Impact Assessment Tools | Open Energy Information

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    Publications, Softwaremodeling tools User Interface: Other Website: iatools.jrc.ec.europa.eubinviewIQToolWebHome.html IPTS-IA Tools Screenshot References: IPTS-IA Tools1...

  20. Mutual Insurance Company of West

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    call 800-247-4184 or visit ARAGLegalCenter.com. Limitations and exclusions apply. Insurance products are underwritten by ARAG Insurance Company of Des Moines, Iowa, GuideOne ...

  1. 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.

  2. West Burlington, Iowa: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Hide Map This article is a stub. You can help OpenEI by expanding it. West Burlington is a city in Des Moines County, Iowa. It falls under Iowa's 2nd...

  3. CX-004285: Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Indigo Dawn Green and Main Street ProjectCX(s) Applied: A9, B5.1Date: 10/20/2010Location(s): Des Moines, IowaOffice(s): Energy Efficiency and Renewable Energy, Golden Field Office

  4. A Touch of Green for Des Moines’ Sherman Hill

    Broader source: Energy.gov [DOE]

    Des Moines' Green & Main intends to intends to renovate an abandoned 1930s grocery store into a mixed-use facility with LEED Platinum certification – a prestigious badge of energy efficiency and sustainable building practices.

  5. Energy secretary: U.S. must be energy independent | The Ames Laboratory

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

    Energy secretary: U.S. must be energy independent Des Moines Register business - ag, environment, energy reporter Donnelle Eller wrote a story about Energy Secretary Ernest Moniz's appearance Friday morning in Des Moines for a public forum on energy policies, electric markets and the grid. Moniz talked about ethanol, wind and other aspects of energy policy. News Link: Energy secretary: U.S. must be energy independent

  6. Highly Insulating Residential Windows Using Smart Automated Shading

    Broader source: Energy.gov [DOE]

    Lead Performer: Lawrence Berkeley National Laboratory - Berkeley, CA Partner: Pella Windows - Pella, IA

  7. Discovering the Nature of Dark Energy: Towards Better Distances from Type

    Office of Scientific and Technical Information (OSTI)

    Ia Supernovae -- Final Technical Report (Technical Report) | SciTech Connect SciTech Connect Search Results Technical Report: Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae -- Final Technical Report Citation Details In-Document Search Title: Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae -- Final Technical Report Type Ia supernovae (SNe Ia; exploding white-dwarf stars) were the key to the Nobel-worthy 1998

  8. Discovery in Action - Pacific Northwest National Laboratory

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

    Ia Supernovae -- Final Technical Report (Technical Report) | SciTech Connect Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae -- Final Technical Report Citation Details In-Document Search Title: Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae -- Final Technical Report Type Ia supernovae (SNe Ia; exploding white-dwarf stars) were the key to the Nobel-worthy 1998 discovery and subsequent verification that the

  9. Analysis of natural gases, AL, AR, FL, GA, IL, IN, IA, KY, LA, MD, MI, MS, MO, NJ, NY, NC, OH, PA, TN, VA, and WV; 1951-1991 (for microcomputers). Data file

    SciTech Connect (OSTI)

    Not Available

    1991-01-01

    The U.S. Bureau of Mines diskette contains analysis and related source data for 2,357 natural gas samples collected from miscellaneous states, which include the following states: Alabama, Arkansas (except Arkoma Basin), Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Maryland, Michigan, Mississippi, Missouri, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, and West Virginia. All samples were obtained and analyzed as part of the Bureau's investigations of occurrences of helium in natural gases of countries with free market economies. The survey has been conducted since 1917. The analysis contained on the diskette contain the full range of component analysis data. Five files are on the diskette: READ.ME, MISC.TXT, MISC.DBF, USHEANAL.DBF, and BASINCDE.TXT.

  10. Welcome to DOE International

    Broader source: Energy.gov [DOE]

    Welcome to the U.S. Department of Energy’s Office of International Affairs (IA). IA has the primary responsibility for coordinating DOE’s international cooperation in the areas of energy, science, and technology.

  11. Workbook Contents

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

    Date:","12312015" ,"Next Release Date:","01292016" ,"Excel File Name:","n3050ia3m.xls" ,"Available from Web Page:","http:tonto.eia.govdnavnghistn3050ia3m.htm"...

  12. Pioneer Prairie II Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    In Service Owner Horizon Wind Energy Developer Horizon Wind Energy Location Northeastern IA IA Coordinates 43.450321, -92.551074 Show Map Loading map... "minzoom":false,"mappi...

  13. Microsoft Word - Map and Directions to UV.doc

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

    Schilletter-University Village (SUV) Iowa State University Ames, IA 50011 Ames Laboratory - Public Affairs 111 TASF Iowa State University Ames, IA 50011-3020 Page 1 515.294.9557 1...

  14. Microsoft Word - Map and Directions to FrCt.doc

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

    Frederiksen Court Housing Iowa State University Ames, IA 50011 Ames Laboratory - Public Affairs 111 TASF Iowa State University Ames, IA 50011-3020 Page 1 515.294.9557 1 Enter Ames...

  15. Pioneer Prairie I (3Q08) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    In Service Owner Horizon Wind Energy Developer Horizon Wind Energy Location Northeastern IA IA Coordinates 43.450321, -92.551074 Show Map Loading map... "minzoom":false,"mappi...

  16. Chapter 17 - Special Contracting Methods | Department of Energy

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

    June 2008 17.1 - Attachment 2 - OFPP Business Case Guidance 17.1 - Attachment 3A - IA FUNDS OUT Assisted Aquisition Part A 17.1 - Attachment 3A - IA FUNDS OUT Assisted...

  17. NERSC course syllabus

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

    003: U ser---defined structure constructors; e ncapsulation a nd i nformation h iding v ia m odules a nd private scoping; c omposition, a ggregation, a nd i nheritance v ia...

  18. Office Of International Affairs Expert Listing 2/25/14 Organization

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

    ... IA-32 European & Asian Pacific Affairs Belgium Nick Sherman 3903 Nick.Sherman@hq.doe.gov Samuel Browne 8724 IA-32 European & Asian Pacific Affairs Bhutan Nick Sherman 3903 ...

  19. Fermilab Today

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

    4 percent. The key is a special type of Type Ia supernovae. Type Ia supernovae are thermonuclear explosions of white dwarfs - the very dense remnants of stars that have burned all...

  20. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... TYPE Ia SUPERNOVAE AS A POSSIBLE SYSTEMATIC UNCERTAINTY FOR SUPERNOVA COSMOLOGY ... We find that changing the UV SED of an SN Ia within the observed dispersion can change the ...

  1. Workbook Contents

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

    File Name:","n3020ia2m.xls" ,"Available from Web Page:","http:tonto.eia.govdnavnghistn3020ia2m.htm" ,"Source:","Energy Information Administration" ,"For Help,...

  2. Workbook Contents

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

    File Name:","n3020ia4m.xls" ,"Available from Web Page:","http:tonto.eia.govdnavnghistn3020ia4m.htm" ,"Source:","Energy Information Administration" ,"For Help,...

  3. Workbook Contents

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

    File Name:","n3020ia3m.xls" ,"Available from Web Page:","http:tonto.eia.govdnavnghistn3020ia3m.htm" ,"Source:","Energy Information Administration" ,"For Help,...

  4. Chapter 17 - Special Contracting Methods | Department of Energy

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

    7 - Special Contracting Methods Chapter 17 - Special Contracting Methods 17.1 - Attachment 1 - OFPP Guidance Interagence Acquisitions June 2008 17.1 - Attachment 2 - OFPP Business Case Guidance 17.1 - Attachment 3A - IA FUNDS OUT Assisted Aquisition Part A 17.1 - Attachment 3A - IA FUNDS OUT Assisted Aquisition Part B 17.1 - Attachment 3B - IA FUNDS OUT Interagency Transaction Part A 17.1 - Attachment 3B - IA FUNDS OUT Interagency Transaction Part B 17.1 - Attachment 3C - IA STRIPES Cover form

  5. Inhibiting voltage suppression in lithium/fluorinated carbon batteries

    SciTech Connect (OSTI)

    Shia, G.A.; Nalewajek, D.; Pyszczek, M.F.

    1988-12-13

    This patent describes a lithium/fluorinated carbon battery having a reduced initial voltage suppression which comprises the incorporation in the battery cathode of fluorinated carbon which has been reacted with a compound selected from the group consisting of a Group IA metal-alkyl compound and a Group IA metal-aryl compound, which Group IA metal-aryl compound has at least 10 carbon atoms, until surface fluorine on the fluorinated carbon has been stripped and alkyl or aryl groups from the Group IA metal-alkyl compound or Group IA metal-aryl compound are substituted for surface fluorine atoms.

  6. About Us | Department of Energy

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

    Us About Us IA has the primary responsibility for coordinating the efforts of diverse elements in the Department to ensure a unified voice in our international energy policy. IA works closely with Departmental elements, other Federal agencies, national and international organizations and institutions, and the private sector to coordinate and align our international energy activities with our national energy policies. IA coordinates DOE international initiatives on clean energy, climate change,

  7. IBEW Local 1002 | Department of Energy

    Energy Savers [EERE]

    IA Experts Listing 2014 IA Experts Listing 2014 PDF icon IA Experts Listing January 2014 More Documents & Publications Office of International Affairs Organization Chart PI Organization Chart Office of Policy and International Affairs Organization Chart

    IAPMO/PMI CCE Overview and Update IAPMO/PMI CCE Overview and Update This presentation was given in a webinar hosted by IAMPO and PMI on June 24, 2011. It addresses the certification and compliance provisions for plumbing products covered

  8. OPTICAL CROSS-CORRELATION FILTERS: AN ECONOMICAL APPROACH FOR IDENTIFYING

    Office of Scientific and Technical Information (OSTI)

    SNe Ia AND ESTIMATING THEIR REDSHIFTS (Journal Article) | SciTech Connect OPTICAL CROSS-CORRELATION FILTERS: AN ECONOMICAL APPROACH FOR IDENTIFYING SNe Ia AND ESTIMATING THEIR REDSHIFTS Citation Details In-Document Search Title: OPTICAL CROSS-CORRELATION FILTERS: AN ECONOMICAL APPROACH FOR IDENTIFYING SNe Ia AND ESTIMATING THEIR REDSHIFTS Large photometric surveys of transient phenomena, such as Panoramic Survey Telescope and Rapid Response System and Large Synoptic Survey Telescope, will

  9. Consumer Choice of E85: Lessons from Minnesota's Experience

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    ND Fleet MN State IA State ND State The Minnesota data was previously analyzed by Greene ... gallon equivalent Using data from Minnesota through 2007, Greene (2009) found price ...

  10. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... The Physics and Astrophysics of Type Ia Supernova Explosions Guidry, Mike W ; Messer, Bronson January 2013 Developing MiniApps on Modern Platforms Using Using Multiple Programming ...

  11. Expectations for the hard x-ray continuum and gamma-ray line fluxes from

    Office of Scientific and Technical Information (OSTI)

    the typE IA supernova SN 2014J in M82 (Journal Article) | SciTech Connect Expectations for the hard x-ray continuum and gamma-ray line fluxes from the typE IA supernova SN 2014J in M82 Citation Details In-Document Search Title: Expectations for the hard x-ray continuum and gamma-ray line fluxes from the typE IA supernova SN 2014J in M82 The hard X-ray continuum and gamma-ray lines from a Type Ia supernova dominate its integrated photon emissions and can provide unique diagnostics of the mass

  12. Improved Dye-Sensitized Solar Cell (DSSC) for Higher Energy Conversion

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    Curves (Journal Article) | SciTech Connect Journal Article: Improved Dark Energy Constraints From ~ 100 New CfA Supernova Type Ia Light Curves Citation Details In-Document Search Title: Improved Dark Energy Constraints From ~ 100 New CfA Supernova Type Ia Light Curves We combine the CfA3 supernovae Type Ia (SN Ia) sample with samples from the literature to calculate improved constraints on the dark energy equation of state parameter, w. The CfA3 sample is added to the Union set of Kowalski

  13. 2014 Annual Site Environmental Report

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

    ... a noxious weed. Populations of diffuse knapweed (Acosta diffusa) and Dalmatian toadflax (Linar- ia genistifolia subsp. dalmatica) are scattered through- out the whole community. ...

  14. Search for: All records | SciTech Connect

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... Filter Results Filter by Subject impervious surface (1) prior-knowledge (1) spectral ...

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    Office of Scientific and Technical Information (OSTI)

    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... These assessments of model performance, as well as our knowledge of cloud and aerosol ...

  16. From: Pam Hartwig To: Congestion Study Comments Subject:

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

    NOT be an established National Corridor. In other words: DO NOT ESTABLISH ANY NATIONAL INTERST ENERGY TRANSMISSION CORRIDOR Pam Hartwig 1076 Virginia Ave Bennett Ia 52721

  17. Platinum Ethanol LLC | Open Energy Information

    Open Energy Info (EERE)

    Platinum Ethanol LLC Jump to: navigation, search Name: Platinum Ethanol LLC Place: Arthut, Iowa Product: Developed a 110m gallon (416m litre) ethanol plant in Arthur, IA....

  18. Permanent-Magnet Adjustable-Speed Motors John S . Hsu (Htsui...

    Office of Scientific and Technical Information (OSTI)

    cogging torque, and inertia and mechanical system torque. ... currents can be adjusted to change ia, ib, and ic. ... "Investigation into A Class of Brushless DC Motor with ...

  19. Search for: All records | SciTech Connect

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... financiers, and supply chain participants, to identify barriers and opportunities. ...

  20. Search for: All records | DOE PAGES

    Office of Scientific and Technical Information (OSTI)

    Name: Subject: Identifier Numbers: Research Org: Sponsoring Org: Publication Date: ... ; Schlagel, D. L. ; Lograsso, T. A. ; Iowa State Univ., Ames, IA ; Chakrabarti, ...

  1. Discovering the Nature of Dark Energy: Towards Better Distances...

    Office of Scientific and Technical Information (OSTI)

    Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae -- Final Technical Report Citation Details In-Document Search Title: Discovering the Nature ...

  2. Discovering the Nature of Dark Energy: Towards Better Distances...

    Office of Scientific and Technical Information (OSTI)

    the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae -- Final Technical Report Citation Details In-Document Search Title: Discovering the Nature of Dark ...

  3. Final Technical Report: Discovering the Nature of Dark Energy...

    Office of Scientific and Technical Information (OSTI)

    the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae Citation Details In-Document Search Title: Final Technical Report: Discovering the Nature of Dark ...

  4. Top of Iowa III Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Scale Wind Facility Status In Service Owner Madison Gas & Electric Developer Midwest Renewable Energy Projects Energy Purchaser Madison Gas & Electric Location Worth County IA...

  5. Top of Iowa Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Commercial Scale Wind Facility Status In Service Developer Zilkha RenewableMidwest Renewable Energy Purchaser AlliantIES Utilities Location Worth County IA Coordinates...

  6. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    Energy Physics (HEP) (SC-25)","79 ASTRONOMY AND ASTROPHYSICS Dark Energy, Type Ia supernovae, radiative transfer,",,"The progress over the course of the grant period was...

  7. Final Technical Report: Discovering the Nature of Dark Energy...

    Office of Scientific and Technical Information (OSTI)

    Report: Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae Saurabh W. Jha 79 ASTRONOMY AND ASTROPHYSICS dark energy; supernovae; cosmology dark...

  8. TITLE AUTHORS SUBJECT SUBJECT RELATED DESCRIPTION PUBLISHER AVAILABILI...

    Office of Scientific and Technical Information (OSTI)

    Report Discovering the Nature of Dark Energy Towards Better Distances from Type Ia Supernovae Saurabh W Jha ASTRONOMY AND ASTROPHYSICS dark energy supernovae cosmology dark...

  9. Metals on graphene: correlation between adatom adsorption behavior...

    Office of Scientific and Technical Information (OSTI)

    Resource Type: Journal Article Resource Relation: Journal Name: Physical Chemistry Chemical Physics; Journal Volume: 14 Research Org: Ames Laboratory (AMES), Ames, IA (United...

  10. Co-benefits Evaluation Tools | Open Energy Information

    Open Energy Info (EERE)

    Interface: Spreadsheet ComplexityEase of Use: Simple Website: tools.ias.unu.edu Cost: Free Related Tools Simplified Approach for Estimating Impacts of Electricity Generation...

  11. Search for: kondo effect | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... displaying exotic non-Fermi liquid behaviour arises in the intricate scenario of two ...

  12. Search for: All records | SciTech Connect

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... Metal-metal bonding is used to explain such 'abnormal' behaviour and a generalized ...

  13. Search for: All records | SciTech Connect

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... is paramount to optimising their behaviour and function and in situ ...

  14. Clarion-Goldfield School Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    High School Energy Purchaser Clarion-Goldfield High School Location Wright County IA Coordinates 42.737179, -93.718132 Show Map Loading map... "minzoom":false,"mappings...

  15. Contractor Past Performance Information

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

    a. Part A. b. Part B. 2. Interagency agreement format and samples. a. STRIPES IA funds out templates for interagency assisted acquisitions and interagency transactions....

  16. Akron-Westfield School District Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Comm. Schools Energy Purchaser AlliantIES Utilities Location Akron-Westfield IA Coordinates 42.7859, -96.5836 Show Map Loading map... "minzoom":false,"mappingservi...

  17. Hardin-Hilltop Wind Project | Open Energy Information

    Open Energy Info (EERE)

    Community wind Developer Community wind Energy Purchaser Alliant Location Greene County IA Coordinates 42.086204, -94.349999 Show Map Loading map... "minzoom":false,"mappings...

  18. Midland Power Coop | Open Energy Information

    Open Energy Info (EERE)

    search Name: Midland Power Coop Address: 1005 E. Lincoln Way Place: Jefferson, IA Zip: 50129 Phone Number: 1-515-386-4111 Facebook: https:www.facebook.commidlandpower...

  19. AL2007-03.doc

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

    from GAO and Inspector General (IG) reports of other federal agencies. Introduction The IA relationship involves two Federal agencies that enter into a relationship for the...

  20. Story County Wind Project II | Open Energy Information

    Open Energy Info (EERE)

    Energy Resources Developer NextEra Energy Resources Location Story & Hardin Counties IA Coordinates 42.301351, -93.45156 Show Map Loading map... "minzoom":false,"mappingse...

  1. Forest City High School Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    High School Energy Purchaser Forest City Community School District Location Forest City IA Coordinates 43.266011, -93.653378 Show Map Loading map... "minzoom":false,"mappings...

  2. Endeavor (3Q07) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Resources Energy Purchaser AlliantIES Utilities Location Osceola and Dickenson Counties IA Coordinates 43.416841, -95.423477 Show Map Loading map... "minzoom":false,"mappings...

  3. Endeavor (3Q08) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Resources Developer NextEra Energy Resources Location Osceola and Dickenson Counties IA Coordinates 43.432497, -95.452752 Show Map Loading map... "minzoom":false,"mappings...

  4. Neppel Wind Power Project | Open Energy Information

    Open Energy Info (EERE)

    Developer Alliant Energy Energy Purchaser AlliantIES Utilities Location Armstrong IA Coordinates 43.402001, -94.578989 Show Map Loading map... "minzoom":false,"mappings...

  5. Iowa Distributed Wind Generation Project | Open Energy Information

    Open Energy Info (EERE)

    Energy Purchaser Consortium -- Cedar Falls leads with 23 ownership Location Algona IA Coordinates 43.0691, -94.2255 Show Map Loading map... "minzoom":false,"mappingservi...

  6. Winnebago I Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Iberdrola Renewables Energy Purchaser Dairyland Power Location Winnebago County IA Coordinates 43.317944, -93.761537 Show Map Loading map... "minzoom":false,"mappings...

  7. Bulldog | Open Energy Information

    Open Energy Info (EERE)

    Bulldog LLC Energy Purchaser Farmers' Cooperative of Greenfield Location Greenfield IA Coordinates 41.22708706, -94.43487167 Show Map Loading map... "minzoom":false,"mapp...

  8. Wolverine | Open Energy Information

    Open Energy Info (EERE)

    Wolverine LLC Energy Purchaser Farmers' Cooperative of Greenfield Location Greenfield IA Coordinates 41.39310112, -94.44487095 Show Map Loading map... "minzoom":false,"mapp...

  9. Pocahontas Prairie | Open Energy Information

    Open Energy Info (EERE)

    Owner Algonquin Power Developer Gamesa Energy Purchaser Merchant Location Pomeroy IA Coordinates 42.62183365, -94.6978569 Show Map Loading map... "minzoom":false,"mappi...

  10. Sibley Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Northern Alternative Energy Energy Purchaser AlliantIES Utilities Location Sibley IA Coordinates 43.4037, -95.7417 Show Map Loading map... "minzoom":false,"mappingservi...

  11. Eldora-New Providence Schools Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Schools Energy Purchaser Eldora - New Providence Schools Location Hardin County IA Coordinates 42.3794, -93.2497 Show Map Loading map... "minzoom":false,"mappingservi...

  12. Pioneer Grove | Open Energy Information

    Open Energy Info (EERE)

    Acciona Energy Energy Purchaser Central Iowa Power Cooperative Location Mechanicsville IA Coordinates 41.85086289, -91.23407364 Show Map Loading map... "minzoom":false,"mapp...

  13. Little Cedar | Open Energy Information

    Open Energy Info (EERE)

    Developer Paul Roeder Energy Purchaser Dairyland Power Cooperative Location Little Cedar IA Coordinates 43.3858262, -92.7595209 Show Map Loading map... "minzoom":false,"mappin...

  14. Waverly III Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Developer Waverly Light & Power Energy Purchaser Waverly Light & Power Location Waverly IA Coordinates 42.7241, -92.4786 Show Map Loading map... "minzoom":false,"mappingservi...

  15. Nevada High School Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Minnesota Windpower Energy Purchaser AlliantIES Utilities Location NV - Story County IA Coordinates 42.020791, -93.435997 Show Map Loading map... "minzoom":false,"mappings...

  16. http://emdev.apps.em.doe.gov/EMDEV/Pages/groundwaterReport.aspx

    Office of Environmental Management (EM)

    DOE-LM since 2005, long-term monitoring and surveillance with institutional controls. IA plume is actually a collection of several small VOC plumes grouped together for...

  17. Zachary Ridge/LJ Wind Farm | Open Energy Information

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    Energy Energy Purchaser AlliantIES Utilities Location Osceola County near Sibley IA Coordinates 43.4037, -95.7417 Show Map Loading map... "minzoom":false,"mappingservi...

  18. Wind Walkers | Open Energy Information

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    Partners Developer 5045 Wind Partners Energy Purchaser Alliant Energy Location Waukon IA Coordinates 43.2655101, -91.4863848 Show Map Loading map... "minzoom":false,"mappin...

  19. Endeavor (2Q08) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Resources Energy Purchaser AlliantIES Utilities Location Osceola and Dickenson Counties IA Coordinates 43.427012, -95.414987 Show Map Loading map... "minzoom":false,"mappings...

  20. Clay Central Everly School Dist Wind Farm | Open Energy Information

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    Everly School District Energy Purchaser Clay CentralEverly School District Location IA Coordinates 43.1392, -95.2644 Show Map Loading map... "minzoom":false,"mappingservi...

  1. I

    Office of Legacy Management (LM)

    Ilt.hll8dpOPItWiStObO comended for the file job of decantmain8 the l8ttm qeed ia the operation, ,...

  2. Iowa Lakes Community College Wind Farm | Open Energy Information

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    Community College Energy Purchaser Iowa Lakes Community College Location Esterville IA Coordinates 43.397912, -94.81768 Show Map Loading map... "minzoom":false,"mappingse...

  3. Top of Iowa II Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Service Owner Iberdrola Renewables Developer Iberdrola Renewables Location Worth County IA Coordinates 43.361088, -93.294282 Show Map Loading map... "minzoom":false,"mappings...

  4. Marshalltown Wind Farm | Open Energy Information

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    Developer Consumers Energy Energy Purchaser Consumers Energy Location Marshalltown IA Coordinates 42.0518, -92.9079 Show Map Loading map... "minzoom":false,"mappingservi...

  5. Doug Robinson

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

    Staff Scientist, Microelectronics Research Center, Iowa State University, Ames, IA Ph.D. Condensed Matter Physics, University of Illinois, Urbana, Illinois; 1983 M.S....

  6. Meadow Ridge | Open Energy Information

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    (community owned) Energy Purchaser Central Iowa Power Cooperative Location Greenfield IA Coordinates 41.39004255, -94.44637299 Show Map Loading map... "minzoom":false,"mapp...

  7. KTFC Midwest Bible Radio Wind Farm | Open Energy Information

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    Owner KTFC Midwest Bible Radio Energy Purchaser KTFC Midwest Bible Radio Location IA Coordinates 42.4837, -96.3068 Show Map Loading map... "minzoom":false,"mappingservi...

  8. Cumberland Rose | Open Energy Information

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    Purchaser City of Fontanelle - excess to Central Iowa Power Coopeative Location Orient IA Coordinates 41.22534409, -94.44139481 Show Map Loading map... "minzoom":false,"mapp...

  9. Kirkwood Community College | Open Energy Information

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    Kirkwood Community College Energy Purchaser Alliant Energy Location Cedar Rapids IA Coordinates 41.91674479, -91.65078163 Show Map Loading map... "minzoom":false,"mapp...

  10. Sibley Hills Wind Farm | Open Energy Information

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    Northern Alternative Energy Energy Purchaser AlliantIES Utilities Location Sibley IA Coordinates 43.4037, -95.7417 Show Map Loading map... "minzoom":false,"mappingservi...

  11. Spirit Lake Wind Farm | Open Energy Information

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    Minnesota Windpower Energy Purchaser AlliantIES Utilities Location Spirit Lake IA Coordinates 43.411381, -95.10075 Show Map Loading map... "minzoom":false,"mappingse...

  12. Stuart Municipal Utilities Wind Farm | Open Energy Information

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    Stuart Municipal Utilities Energy Purchaser Stuart Municipal Utilities Location Stuart IA Coordinates 41.493988, -94.327403 Show Map Loading map... "minzoom":false,"mappings...

  13. New Harvest | Open Energy Information

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    Iberdrola Renewables Energy Purchaser ComEd and Ameren Illinois Location Schleswig IA Coordinates 42.16197194, -95.44696569 Show Map Loading map... "minzoom":false,"mapp...

  14. Consumers 2 Wind Farm | Open Energy Information

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    Developer Consumers Energy Energy Purchaser Consumers Energy Location Marshalltown IA Coordinates 42.0518, -92.9079 Show Map Loading map... "minzoom":false,"mappingservi...

  15. Endeavor II Wind Farm | Open Energy Information

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    Resources Developer NextEra Energy Resources Location Osceola and Dickenson Counties IA Coordinates 43.427012, -95.414987 Show Map Loading map... "minzoom":false,"mappings...

  16. AG Land 6 | Open Energy Information

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    LLC Developer Enervation LLC Energy Purchaser Alliant Energy Location Hamilton County IA Coordinates 42.335536, -93.632344 Show Map Loading map... "minzoom":false,"mappings...

  17. Barton Wind Farm | Open Energy Information

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    Renewables Developer Iberdrola Renewables Energy Purchaser NIPSCO Location Worth County IA Coordinates 43.365893, -93.095412 Show Map Loading map... "minzoom":false,"mappings...

  18. Waverly Wind Farm | Open Energy Information

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    & Power Developer GE Energy Energy Purchaser Waverly Light & Power Location Waverly IA Coordinates 42.7241, -92.4786 Show Map Loading map... "minzoom":false,"mappingservi...

  19. IDGWP Wind Farm | Open Energy Information

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    Iowa Distributed Wind Generation Project Energy Purchaser Cedar Falls Location Algona IA Coordinates 43.0699663, -94.233019 Show Map Loading map... "minzoom":false,"mapping...

  20. Energy Efficiency Standard | Department of Energy

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

    pending approval Other EE Program Info Sector Name State Website http:www.state.ia.usgovernmentcomutilenergyenergyefficiency.html State Iowa Program Type Energy...

  1. Elk | Open Energy Information

    Open Energy Info (EERE)

    Access Wind Development Energy Purchaser Central Iowa Power Cooperative Location Greeley IA Coordinates 42.58659755, -91.36861324 Show Map Loading map... "minzoom":false,"mapp...

  2. Lenox Municipal Utilities Wind Farm | Open Energy Information

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    Lenox Municipal Utilities Energy Purchaser Lenox Municipal Utilities Location Lenox IA Coordinates 40.880592, -94.559029 Show Map Loading map... "minzoom":false,"mappings...

  3. Wall Lake Municipal Utilities Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Municipal Utilities Energy Purchaser Wall Lake Municipal Utilities Location Wall Lake IA Coordinates 42.281965, -95.094098 Show Map Loading map... "minzoom":false,"mappings...

  4. Carsten Farms | Open Energy Information

    Open Energy Info (EERE)

    energy Facility Type Commercial Scale Wind Facility Status In Service Location Shelby IA Coordinates 41.4013022, -94.60524023 Show Map Loading map... "minzoom":false,"mappi...

  5. Spirit Lake II Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Lake School District Energy Purchaser Spirit Lake School District Location Spirit Lake IA Coordinates 43.411412, -95.09914 Show Map Loading map... "minzoom":false,"mappingse...

  6. Rippey | Open Energy Information

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    Access Wind Development Energy Purchaser Central Iowa Power Cooperative Location Rippey IA Coordinates 41.9963704, -94.19471741 Show Map Loading map... "minzoom":false,"mappi...

  7. Waverly, Iowa: Energy Resources | Open Energy Information

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    Iowa: Energy Resources (Redirected from Waverly, IA) Jump to: navigation, search Equivalent URI DBpedia Coordinates 42.7272032, -92.4668511 Show Map Loading map......

  8. Forward Fontanelle | Open Energy Information

    Open Energy Info (EERE)

    City of Fontanelle - excess to Central Iowa Power Coopeative Location Fontanelle IA Coordinates 41.33958763, -94.5707202 Show Map Loading map... "minzoom":false,"mappi...

  9. Waverly Light and Power | Open Energy Information

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    and Power Jump to: navigation, search Name: Waverly Light and Power Place: Waverly, IA Information About Partnership with NREL Partnership with NREL Yes Partnership Type Other...

  10. New London | Open Energy Information

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    Scale Wind Facility Status In Service Developer Shermco Industries Location New London IA Coordinates 40.95478446, -91.39509201 Show Map Loading map... "minzoom":false,"mapp...

  11. Hawkeye | Open Energy Information

    Open Energy Info (EERE)

    Access Wind Development Energy Purchaser Central Iowa Power Cooperative Location Rippey IA Coordinates 42.92513165, -92.02989578 Show Map Loading map... "minzoom":false,"mapp...

  12. Steamboat Springs Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    Facility Steamboat Hills Geothermal Facility Steamboat I Geothermal Facility Steamboat IA Geothermal Facility Steamboat II Geothermal Facility Steamboat III Geothermal Facility...

  13. Boondocks Truck Stop Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    In Service Owner Boondocks Truck Stop Energy Purchaser Boondocks Truck Stop Location IA Coordinates 42.4703, -93.5624 Show Map Loading map... "minzoom":false,"mappingservi...

  14. Windway Technologies Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Developer Windway Technologies Energy Purchaser AlliantIES Utilities Location Joice IA Coordinates 43.3629, -93.4559 Show Map Loading map... "minzoom":false,"mappingservi...

  15. Search for: All records | SciTech Connect

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

    for Plutonium, Amarillo, TX (United States) AmeriFlux Ames Laboratory (AMES), Ames, IA (United States) Argonne National Laboratory (ANL), Argonne, IL (United States) Argonne...

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    States) AmeriFlux Ames Laboratory (AMES), Ames, IA (United ... DOEEI USDOE Energy Information Administration (EIA) ... Marine and Hydrokinetic Data Repository (MHKDR) ...

  17. Magnetic microbes: Bacterial magnetite biomineralization (Journal...

    Office of Scientific and Technical Information (OSTI)

    Additional Journal Information: Journal Volume: 46; Journal Issue: C; Journal ID: ISSN 1084-9521 Publisher: Elsevier Research Org: Ames Laboratory (AMES), Ames, IA (United States) ...

  18. Funding Formulas and Arrangements under IEA Implementing Agreements

    SciTech Connect (OSTI)

    Delgado, Alison; Evans, Meredydd

    2008-12-30

    The Pacific Northwest National Laboratory has researched how participating countries divide funding obligations under International Energy Agency (IEA) Implementing Agreements (IAs). This is part of a broader assessment evaluating the buildings-area IAs. This particular part of the analysis looked at 12 IAs funded by the U.S. Department of Energy. By selecting a range of agreements, we hoped to understand the types of arrangements and the range of funding formulas. PNNL asked the U.S. Executive Committee (ExCo) members how the total contribution for their IA and its Annexes were determined, and how the total was then divided between participating countries.

  19. Negative to positive magnetoresistance and magnetocaloric effect...

    Office of Scientific and Technical Information (OSTI)

    Additional Journal Information: Journal Volume: 621; Journal Issue: C; Journal ID: ISSN 0925-8388 Publisher: Elsevier Research Org: Ames Lab. (AMES), Ames, IA (United States) ...

  20. Search for: All records | SciTech Connect

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... for Biomedical Sciences, Institute for Academic Initiatives, Osaka University, 1-1 ...

  1. Discovering the Nature of Dark Energy: Towards Better Distances...

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    Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae -- Final Technical Report Filippenko, Alexei Vladimir Univ. California, Berkeley 79...

  2. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae -- Final Technical Report","Filippenko, Alexei Vladimir Univ. California,...

  3. TITLE AUTHORS SUBJECT SUBJECT RELATED DESCRIPTION PUBLISHER AVAILABILI...

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    Discovering the Nature of Dark Energy Towards Better Distances from Type Ia Supernovae Final Technical Report Filippenko Alexei Vladimir Univ California Berkeley ASTRONOMY AND...

  4. Search for: All records | SciTech Connect

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    States) USDOE Office of International Affairs (IA) (United States) USDOE Office of Management and Administration (United States) USDOE Office of Nonproliferation and...

  5. Three gravitationally lensed supernovae behind clash galaxy clusters...

    Office of Scientific and Technical Information (OSTI)

    Using multi-color light-curve fits to determine a standardized SN Ia luminosity distance, ... Subject: 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BRIGHTNESS; CLASSIFICATION; COLOR; ...

  6. Slide 1

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    (i.e. DCMA 14 Point Assessment) * Document management - Updated Information Architecture (IA) - Advanced document search capabilities PARS IIe - Meeting the Challenge *...

  7. shipping and Receiving Services | The Ames Laboratory

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    (your name) ISU Campus, 2405 Kooser Dr. Ames, IA 50011-3020 Services: Shipping Orders Packaging Services Pool Eqpt. Area (reutilization) Receiving Hold Eqpt. Area (for future...

  8. Changing scene highlights III. [Iowa State University] (Technical...

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    Research Org: Ames Lab., IA (USA) Country of Publication: United States Language: English ... ISOTOPE SEPARATION; MATERIALS TESTING; MINING; NATIONAL ORGANIZATIONS; NICKEL ...

  9. Riksch Biofuels | Open Energy Information

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    Riksch Biofuels Jump to: navigation, search Name: Riksch Biofuels Place: Crawfordsville, Iowa Zip: 52621 Product: Biodiesel producer building a plant in Crawfordsville, IA...

  10. Triangle biofuels Industries | Open Energy Information

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    Triangle biofuels Industries Jump to: navigation, search Name: Triangle biofuels Industries Place: Iowa Product: Biodiesel producer developing a 19mlpa plant in Johnston, IA....

  11. Final Technical Report: Discovering the Nature of Dark Energy...

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    Technical Report: Final Technical Report: Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae Citation Details In-Document Search Title: Final...

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    for a way to improve these results? Final Technical Report: Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae Saurabh W. Jha The...

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    TX (United States) AmeriFlux Ames Laboratory (AMES), Ames, IA (United States) ... bonding (1) chloramphenicol (1) design (1) dna (1) dna polymerases (1) efficiency (1) ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... Recent studies from research groups at Rensselaer Polytechnic Institute found that, under ...

  15. Categorical Exclusion I)etermination Fornl

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    exercises and simulation OB 1.3 - Routine maintenance and custodial services OB IA - Air conditioning installation for existing equipment OB I.S - Cooling water system...

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    ... USDOE Office of Chief Financial Officer (CR) (United ... USDOE Office of International Affairs (IA) (United States) USDOE Office of Management and Administration ...

  17. The ESSENCE Supernova Survey: Survey Optimization, Observations...

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    Ia SNe, at redshifts from 0.10 to 0.78, identified through an impartial, effective methodology for spectroscopic classification and redshift determination. We present the...

  18. Soft lithography microlens fabrication and array for enhanced...

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    Ames, IA (United States) Sponsoring Org: USDOE Country of Publication: United States Language: English Subject: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 42 ENGINEERING...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... High Performance Computing Facility Operational Assessment, 2013 Oak Ridge Leadership ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... for lattice calculations, requires the most powerful leadership-class computers available. ...

  1. Office of International Affairs Organization Chart | Department...

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    Office of International Affairs Organization Chart Office of International Affairs Organization Chart PDF icon IA Org Chart Updated June 2014 More Documents & Publications PI ...

  2. Hydrogen Engine Center HEC | Open Energy Information

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    Engine Center HEC Jump to: navigation, search Name: Hydrogen Engine Center (HEC) Place: Algona, Iowa Zip: IA 50511 Sector: Hydro, Hydrogen Product: The Hydrogen Engine Center (HEC)...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... diffraction (2) ambient temperature (1) behavior (1) boron carbides (1) boron nitrides ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... High-pressure behavior of FeOCl Bykov, Maxium ; Bykova, Elena ; van Smaalen, Sander ; ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... of the phase transformation behavior responsible for the rich new physical ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... to each other, and give rise to unusual behavior that is absent for the skyrmions ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... for the investigation of oscillatory behavior around the quark counting rule ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... the polymer composition has shape-memory behavior and can be formed into a permanent ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... Microstructure, crystallization and shape memory behavior of titania and yttria co-doped ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... The effect of Fe spin crossovers on its partitioning behavior and oxidation state in a ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... of the films reproduce well the low frequency behavior, but fail above cut. ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... The high-pressure-high-temperature behavior of bassanite Comodi, Paola ; Nazzareni, ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... high pressure-temperature properties and behavior of an iron-silicon alloy with a ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... their crystal structures, formation thermodynamics and melting behavior have been studied. ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... resistivity curve shows a shoulderlike behavior around 75 Kmore which could be ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... Kondo lattice and antiferromagnetic behavior in quaternary CeTAl4Si2 (T Rh, Ir) single ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... The objective of research is to analyze transient behavior of a heavy water cooled thorium ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... accuracy (1) anorthosites (1) basalt (1) behavior (1) calibration (1) chemistry (1) ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... Have feedback or suggestions for a way to improve these results? High-pressure behavior ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... We have studied the anisotropic magnetic behavior of the rare earth intermetallic compound ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... Anomalous Elastic Behavior in hcp- and Sm-Type Dysprosium Tschauner, Oliver ; ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... W. ; Egami, T. February 2015 3D Fracture Behavior of Sand at the Particle Level: ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... The reentrant martensitic transformation behavior was directly observed during the in situ ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... The and - asymmetries have opposite signs, analogous to the behavior of ALT inmore ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... Importantly, the behavior of the devices remained unchanged under varying bending ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... capable of displaying shape memory behavior (SMPs) and which can first be ...

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    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... Investigation of High-Pressure and Temperature Behavior of Surfactant-Containing Periodic ...

  8. Atomic structure of amorphous and crystallized Ge{sub 15}Sb{sub...

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    I. Physikalisches Institut (IA), RWTH Aachen, 52056 Aachen (Germany) CiNaM-Centre Interdisciplinaire de Nanoscience de Marseille, Campus de Luminy, 13288 Marseille (France) ...

  9. Solar feasibility study for site-specific industrial-process-heat applications. Final report

    SciTech Connect (OSTI)

    Murray, O.L.

    1980-03-18

    This study addresses the technical feasibility of solar energy in industrial process heat (IPH) applications in Mid-America. The study was one of two contracted efforts covering the MASEC 12-state region comprised of: Illinois, Michigan, North Dakota, Indiana, Minnesota, Ohio, Iowa, Missouri, South Dakota, Kansas, Nebraska, Wisconsin. The results of our study are encouraging to the potential future role of solar energy in supplying process heat to a varied range of industries and applications. We identified and developed Case Study documentation of twenty feasible solar IPH applications covering eight major SIC groups within the Mid-American region. The geographical distribution of these applications for the existing range of solar insolation levels are shown and the characteristics of the applications are summarized. The results of the study include process identification, analysis of process heat requirements, selection of preliminary solar system characteristics, and estimation of system performance and cost. These are included in each of the 20 Case Studies. The body of the report is divided into two primary discussion sections dealing with the Study Methodology employed in the effort and the Follow-On Potential of the identified applications with regard to possible demonstration projects. The 20 applications are rated with respect to their relative overall viability and procedures are discussed for possible demonstration project embarkment. Also, a possible extension of this present feasibility study for late-comer industrial firms expressing interest appears worthy of consideration.

  10. Electric mergers: Transmission pricing, market size, and effects on competition

    SciTech Connect (OSTI)

    Legato, C.D.

    1996-06-01

    The prospect of deregulation has introducted a wave of mergers among electric utilities. Most of these mergers would fail an antitrust review because, by combining generation assets of interconnected utilities, they have substantially reduced potential competition in generation. In fact, one can predict that most mergers of utilities that operate within the same power pool or reliability region will be anticompetitive, even if they are not interconnected. Using an antitrust analysis, this article illustrates the potential anticompetitive effects of mergers between interconnected utilities. It concludes that the relevant geographic market will be an area in which a single, area-wide transmission price is charged. Moreover, it concludes that this area and, hence, the relevant market will likely span an area no larger than the Mid-American Interconnected Network or the Virginia/Carolina subregion of the Southeastern Reliability Council. Assuming markets of this size, the data on resulting concentration will show severe consequences for mergers of the sort that were announced in 1995 and 1996.

  11. ascr_workshop_Jan2011.ppt

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    future computing needs in high-speed turbulent flows Sanjiva Lele and Johan Larsson Stanford University DOE ASCR workshop Jan 5-6, 2011 2 Overview SciDAC: Sanjiva Lele (PI); Moin (Stanford); Cook, Cabot, Sjogreen (LLNL); Zhong (UCLA); Yee (NASA) Other projects: PSAAP, NASA * Objective: Increase fundamental understanding and improve predictive/modeling capability of general compressible turbulence problems, especially shock/turbulence interaction, shock/material-interface interaction. * Present

  12. IY:ILrnr IR-rl?l'

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  14. Information architecture project presentation to CIC leaders, March 10 1995

    SciTech Connect (OSTI)

    Lane, T.A.

    1995-09-01

    On March 10, 1995, members of the Laboratory`s Information Architecture (IA) project presented an overview of progress-to-date to Group and Program Leaders and Deputies in the Computing, Information, and Communications (CIC) division. The presentation included progress reports from each of the seven IA teams: desktop, applications, data warehouse, data, infrastructure, financial analysis, metrics, and review. The fundamental purpose was to familiarize the CIC leaders with the IA project and to open a dialog on how CIC and the IA could better work with each other. On April 5, 1995, the IA project held an open forum in the Physics Auditorium that reused many of the viewgraphs from the presentation to CIC leaders.

  15. Propagation of ion-acoustic solitons in an electron beam-superthermal plasma system with finite ion-temperature: Linear and fully nonlinear investigation

    SciTech Connect (OSTI)

    Saberian, E. [Department of Physics, Faculty of Sciences, Azarbaijan Shahid Madani University, 53714-161 Tabriz (Iran, Islamic Republic of); Department of Physics, Faculty of Basic Sciences, University of Neyshabur, Neyshabur (Iran, Islamic Republic of); Esfandyari-Kalejahi, A.; Rastkar-Ebrahimzadeh, A.; Afsari-Ghazi, M. [Department of Physics, Faculty of Sciences, Azarbaijan Shahid Madani University, 53714-161 Tabriz (Iran, Islamic Republic of)

    2013-03-15

    The propagation of ion-acoustic (IA) solitons is studied in a plasma system, comprised of warm ions and superthermal (Kappa distributed) electrons in the presence of an electron-beam by using a hydrodynamic model. In the linear analysis, it is seen that increasing the superthermality lowers the phase speed of the IA waves. On the other hand, in a fully nonlinear investigation, the Mach number range and characteristics of IA solitons are analyzed, parametrically and numerically. It is found that the accessible region for the existence of IA solitons reduces with increasing the superthermality. However, IA solitons with both negative and positive polarities can coexist in the system. Additionally, solitary waves with both subsonic and supersonic speeds are predicted in the plasma, depending on the value of ion-temperature and the superthermality of electrons in the system. It is examined that there are upper critical values for beam parameters (i.e., density and velocity) after which, IA solitary waves could not propagate in the plasma. Furthermore, a typical interaction between IA waves and the electron-beam in the plasma is confirmed.

  16. IEA Implementing Agreements and Annexes: A Guide for Building Technologies Program Managers

    SciTech Connect (OSTI)

    Evans, Meredydd; Meier, Alan; Runci, Paul J.

    2008-08-05

    This guide presents insights and guidance from DOE’s gathered through longstanding and extensive participation in IEA implementing agreements (IAs) and annexes. Even though DOE has been a key participant in international research activities through the IEA since the 1970s, the experience, knowledge, and institutional memory associated with these activities can be lost or forgotten easily as key DOE managers retire or leave the department. The guide seeks to assemble in a single reference some of the learning that has occurred through participation in IEA IAs as a guide for BTP managers currently responsible for IAs and for those who might consider entering into new IEA activities in the future.

  17. BPA-2013-00058-FOIA Request

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

    Michaelyn .ia..,i Lc -s No organization provided Address: 185 South Fairview Lane Sonora, Ca 95370 Phone: 2095996000 No FAX number provided Email: michaelyn@tri-technic.com...

  18. M

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

    resources 1. Includes c oal, n atural g as, p etroleum, h ydrothermal, Source: E IA ... U S Propane, U S Naphtha, A RA Natural G as, U S Price MMBTU Historical Forecast 5 ...

  19. Search for: All records | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    ... (IA) (United States) USDOE Office of Management and Administration (United States) ... A1) of feedstock inventory and availability and, 2) The Supply Chain Model (Sub-task B2). ...

  20. Workbook Contents

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

    Monthly","22016" ,"Release Date:","4292016" ,"Next Release Date:","5312016" ,"Excel File Name:","n3010ia2m.xls" ,"Available from Web Page:","http:tonto.eia.govdnavnghist...

  1. Workbook Contents

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

    Monthly","22016" ,"Release Date:","4292016" ,"Next Release Date:","5312016" ,"Excel File Name:","n3010ia3m.xls" ,"Available from Web Page:","http:tonto.eia.govdnavnghist...

  2. Advanced Technology Center Overview 2015

    Office of Environmental Management (EM)

    Employ nanophase alloy modification v ia Laser Direct Manufacturing (LDM) to create ... Vol: 9.85" x 9.85" x 8.5" Applications * Laser Cladding * Part fabrication * Adding ...

  3. Final Report (Technical Report) | SciTech Connect

    Office of Scientific and Technical Information (OSTI)

    Title: Final Report The progress over the course of the grant period was excellent. We went from 3-D test codes to full 3-D production codes. We studied several SNe Ia. Most of the ...

  4. "Title","Creator/Author","Publication Date","OSTI Identifier...

    Office of Scientific and Technical Information (OSTI)

    Report: Discovering the Nature of Dark Energy: Towards Better Distances from Type Ia Supernovae","Saurabh W. Jha","2012-10-03T04:00:00Z",1052447,"10.21721052447","DOE...

  5. Whispering Willow I Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    energy Facility Type Commercial Scale Wind Facility Status In Service Owner Alliant (IP&L) Developer Alliant (IP&L) Energy Purchaser Alliant (IP&L) Location Franklin County IA...

  6. '

    Office of Legacy Management (LM)

    I ard sa"o metlmdrr of hapdling beryillurn. ii - , .i l3ouorly, Easlr beoontmination ia still a problunwoh is reoei&g aotfve attontim . BfexC rrsok'& aurw till-b6 @ & -;li,+nluu ...

  7. Crosswinds Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Mission Group Developer Community WindEdison Mission Group Location Palo Alto County IA Coordinates 43.075449, -94.895575 Show Map Loading map... "minzoom":false,"mappings...

  8. Hancock County Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    (44 MW); rest purchased by Corn Belt Cooperative and Cedar Falls Location Hancock County IA Coordinates 43.066524, -93.70481 Show Map Loading map... "minzoom":false,"mappingse...

  9. City of Milford, Iowa (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    Milford Place: Iowa Phone Number: (712) 338-2401 Website: milford.ia.usmilford-municipa Outage Hotline: (712) 338-2401 References: EIA Form EIA-861 Final Data File for 2010 -...

  10. Crystal Lake - Clipper (09) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    In Service Owner NextEra Energy Resources Developer NextEra Energy Resources Location IA Coordinates 41.8780025, -93.097702 Show Map Loading map... "minzoom":false,"mapping...

  11. AG Land 1 | Open Energy Information

    Open Energy Info (EERE)

    LLC Developer AG Land Energy LLC Energy Purchaser Alliant Energy Location Story County IA Coordinates 42.145531, -93.432161 Show Map Loading map... "minzoom":false,"mappings...

  12. AIN MAXL

    Office of Legacy Management (LM)

    of CRO.La mutremtz of rlugs for their. dlssolutim &udy program. FhO rU-%Kkin ia&ota Will. be urud for a irradiotlon progrtim r& Banl'ard. < 4' : . ...; . 'I,'. i, i...

  13. untitled

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    180.5 W W 2006 Average ... W 191.7 205.8 192.3 W W Subdistrict IA January ... - W 198.4 177.8 W W February...

  14. Lawrence Jones 121 Metals Development Building,

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

    mpc.ameslab.gov Lawrence Jones 121 Metals Development Building, Ames, IA 50011-3020 jonesll@ameslab.gov 515-294-5236 Like high purity research-grade gadolinium. But the Materials...

  15. City of Akron, Iowa (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    Website: www.akronia.orgindex.aspx?NID Facebook: https:www.facebook.compagesAkron-IA184623971588186 Outage Hotline: 712-568-2041 References: EIA Form EIA-861 Final Data...

  16. Office of Public Affairs | The Ames Laboratory

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

    weekdays. We can be reached at: Ames Laboratory Public Affairs Office 111 TASF Ames, IA 50011 Phone: (515) 294-9557 Fax: (515) 294-3226 Name Location Contact Information Steve...

  17. Crystal Lake - Clipper (08) Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    In Service Owner NextEra Energy Resources Developer NextEra Energy Resources Location IA Coordinates 43.221728, -93.833227 Show Map Loading map... "minzoom":false,"mappings...

  18. Burco Farm and Feed | Open Energy Information

    Open Energy Info (EERE)

    Owner Burco Farm and Feed Energy Purchaser Burco Farm and Feed Location Independence IA Coordinates 42.5638438, -91.88753486 Show Map Loading map... "minzoom":false,"mappi...

  19. City of Laurens, Iowa (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    search Name: City of Laurens Place: Iowa Phone Number: (712) 841-4526 Website: laurens-ia.com?qindex Facebook: https:www.facebook.compagesCity-of-Laurens375091995838547...

  20. Lost Lakes Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Horizon-EDPR Developer Horizon-EDPR Energy Purchaser Market Location Dickinson County IA Coordinates 43.32401, -95.264354 Show Map Loading map... "minzoom":false,"mappingse...

  1. Flim3.l Elaenbud

    Office of Legacy Management (LM)

    After au&hat&on, the m&hated material is hmhed thuaterandvauuwfilted. The ffltrate ia treated through rev- aral precipitation and processing step8 and is finally precipitated...

  2. Nishnabotna Valley R E C | Open Energy Information

    Open Energy Info (EERE)

    search Name: Nishnabotna Valley R E C Address: 1317 Chatburn Ave Place: Harlan, IA Zip: 51537 Phone Number: 712-755-2166 Website: nvrec.comdefaultv2.aspx?n136 Outage...

  3. CONTACT INFORMATION: Steve Karsjen Public Affairs Manager

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

    Manager karsjen@ameslab.gov 515.294.5643 111 TASF, Ames, IA 50011 Solder is the glue that holds many of our gadgets together. Unfortunately, much of the solder used today is made...

  4. Crystal Lake II | Open Energy Information

    Open Energy Info (EERE)

    Energy Resources Developer NextEra Energy Resources Location HancockWinnebago Counties IA Coordinates 43.16151, -93.855786 Show Map Loading map... "minzoom":false,"mappingse...

  5. City of Forest City, Iowa (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    .cityofforestcity.comdepar Facebook: https:www.facebook.compagesCity-of-Forest-City-IA142928346092 Outage Hotline: (641) 585-3574 or (641) 585-4343 References: EIA Form...

  6. Storm Lake II Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Energy Energy Purchaser AlliantIES Utilities Location Buena Vista and Cherokee Counties IA Coordinates 42.655334, -95.383651 Show Map Loading map... "minzoom":false,"mappings...

  7. Titanha Alloy Wwfacturbi: L'ivinien Hatioml Lead Camparw Box...

    Office of Legacy Management (LM)

    work rtiotive to conver8Ion of thori- acrap so mkqnirou, tatncblorib, This licenaa ia isubJect to the right ti recapture or control lvserved by Section LO6 of tm Atomic...

  8. untitled

    Gasoline and Diesel Fuel Update (EIA)

    174.3 W W 2005 Average ... 189.1 174.5 177.4 166.7 W W Subdistrict IA January ... W W 144.7 133.7 W W February...

  9. City of Fairbank, Iowa (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    Name: City of Fairbank Place: Iowa Phone Number: (319) 635-2869 Website: www.fairbank-ia.orgpublic-wor Facebook: https:www.facebook.comFairbankIowa Outage Hotline: (319)...

  10. Crystal Lake - GE Energy Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    In Service Owner NextEra Energy Resources Developer NextEra Energy Resources Location IA Coordinates 43.194201, -93.860521 Show Map Loading map... "minzoom":false,"mappings...

  11. Story County Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Energy Resources Developer NextEra Energy Resources Location Story and Hardin Counties IA Coordinates 42.301351, -93.45156 Show Map Loading map... "minzoom":false,"mappingse...

  12. This refers to tbe%aspectioa cooducted,ooMlny 2 - 5, 1961. of

    Office of Legacy Management (LM)

    28, 1959. d. Fused U02 is not stored in+n inert atwos- sphere as described ia paragraph 2(b) of the I license applicatiou dated February 2, 1960. Pursuant to the...

  13. Story County Hospital Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Story County Hospital Energy Purchaser AlliantIES Utilities Location NV - Story County IA Coordinates 42.016808, -93.453238 Show Map Loading map... "minzoom":false,"mappings...

  14. City of Greenfield, Iowa (Utility Company) | Open Energy Information

    Open Energy Info (EERE)

    of Greenfield Place: Iowa Phone Number: (641) 743-2741 or (641) 743-2914 Website: gmu-ia.com Facebook: https:www.facebook.comGreenfieldMunicipalUtilities Outage Hotline:...

  15. Reports

    Office of Legacy Management (LM)

    aehsed herewith ia Coaprehenaive Survey of USBEC mtp, Lewebldinge ad Grn&-owned Bpipment under SC & COntraCtCW'S COntrOl, as requested in AEC BULLETIN No. 48 dated April 26,...

  16. WAR DEPARTaMMeNT

    Office of Legacy Management (LM)

    10 tom as BX0683. p 5 Production of heels at Ravsre Coppsr & Brass Comsaay: ExLrwion ia axpested to continua at 30 tons par waskand, whioh ..-,: is squix&mt to 130 tons per...

  17. Deb Covey, Associate Director for Sponsored Research

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

    gov Deb Covey, Associate Director for Sponsored Research 311 TASF Ames, IA, 50011 covey@ameslab.gov 515-294-1048 Ames Laboratory, a U.S. Department of Energy national laboratory...

  18. AG Land 4 | Open Energy Information

    Open Energy Info (EERE)

    LLC Developer AG Land Energy LLC Energy Purchaser Alliant Energy Location Story County IA Coordinates 42.206397, -93.325714 Show Map Loading map... "minzoom":false,"mappings...

  19. Sentral School Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Wind energy Facility Type Small Scale Wind Facility Status In Service Location Fenton IA Coordinates 43.210574, -94.388514 Show Map Loading map... "minzoom":false,"mappings...

  20. AG Land 2 | Open Energy Information

    Open Energy Info (EERE)

    LLC Developer AG Land Energy LLC Energy Purchaser Alliant Energy Location Story County IA Coordinates 41.904231, -93.354864 Show Map Loading map... "minzoom":false,"mappings...

  1. SUBCONTRACT NO. S-59, AMEXDMENT NO. 1

    Office of Legacy Management (LM)

    shall pay to the Subcontractor the sum of lO,n9.21." Page 2 a ' . . . - . l 0 Ia W ITEESS WHEREOF, the parties hereto have executed this supplemental agreement as of the...

  2. Flying Cloud Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Clipper Windpower Energy Purchaser AlliantIES Utilities Location West of Spirit Lake IA Coordinates 43.416975, -95.422282 Show Map Loading map... "minzoom":false,"mappings...

  3. Cerro Gordo Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    NextEra Energy Resources Energy Purchaser AlliantIES Utilities Location Clear Lake IA Coordinates 43.071437, -93.431647 Show Map Loading map... "minzoom":false,"mappings...

  4. Tjaden Farms Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Status In Service Owner Tjaden Farms Energy Purchaser Tjaden Farms Location Charles City IA Coordinates 43.170337, -92.58944 Show Map Loading map... "minzoom":false,"mappingse...

  5. jllletaIlurgitaI Haboratorp

    Office of Legacy Management (LM)

    0eu to k 10 otpsr available ruthod thrn oaxtarlorO.(;rinding rinoe l oylindriod grlndu ia not 11 atitod for mmh work oo pioser longer than about8 red. Thusforo, to wka uoa of...

  6. Wind Vision Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    Facility Status In Service Owner Wind Vision Developer Wind Vision Location St. Ansgar IA Coordinates 43.348224, -92.888816 Show Map Loading map... "minzoom":false,"mappings...

  7. Bureau of Indian Affairs | Open Energy Information

    Open Energy Info (EERE)

    We Do 3 Geothermal Energy Development Contacts 4 References Who We Are Indian Affairs (IA) is the oldest bureau of the United States Department of the Interior. Established in...

  8. License Iso. CM35

    Office of Legacy Management (LM)

    of ymir inventories, receipts and cranefers of refined source m- urirl. I lhlr license ia subject to all the pmvleions of the Atomic Energy Act of 19% nov or hereafter in effect...

  9. Crystal Lake III | Open Energy Information

    Open Energy Info (EERE)

    Energy Resources Developer NextEra Energy Resources Location HancockWinnebago Counties IA Coordinates 43.304401, -93.824029 Show Map Loading map... "minzoom":false,"mappings...

  10. NERSC Schedule.xlsx

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

    p rogramming ( OOP)? 10:45---11:00 Break 11:00---11:30 Example: F ireworks s imulation v ia p rocedural p rogramming 11:30---12:00 Section 2 .1 N omenclature, S ection 2 .2 O...

  11. Iowa Association of Municipal Utilities | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name: Iowa Association of Municipal Utilities Place: Ankeny, IA Website: www.iamu.org References: SGIC1 This article is a stub. You can help OpenEI...

  12. Crane Creek Wind Farm | Open Energy Information

    Open Energy Info (EERE)

    EnXco Energy Purchaser Wisconsin P ublic Service Group Location Northeast of Riceville IA Coordinates 43.410108, -92.51652 Show Map Loading map... "minzoom":false,"mappingse...

  13. AG Land 3 | Open Energy Information

    Open Energy Info (EERE)

    LLC Developer AG Land Energy LLC Energy Purchaser Alliant Energy Location Story County IA Coordinates 42.146061, -93.428028 Show Map Loading map... "minzoom":false,"mappings...

  14. Improved Dark Energy Constraints From ~ 100 New CfA Supernova...

    Office of Scientific and Technical Information (OSTI)

    Improved Dark Energy Constraints From 100 New CfA Supernova Type Ia Light Curves Citation Details In-Document Search Title: Improved Dark Energy Constraints From 100 New CfA ...

  15. Structure and Receptor Specificity of an Avian Flu Antigen

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

    ... Publication about this research: J. Stevens, O. Blixt, T.M. Tumpey, J.K. Taubenberger, J.C. Paulson, and I.A. Wilson, "Structure and receptor specificity of the hemagglutinin from ...

  16. ALSNews Vol. 278

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    ... Publication about this research: J. Stevens, O. Blixt, T.M. Tumpey, J.K. Taubenberger, J.C. Paulson, and I.A. Wilson, "Structure and receptor specificity of the hemagglutinin from ...

  17. Microsoft Word - TLR3.doc

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

    ... Primary Citation: Choe, J., Kelker, M.S., Wilson, I.A. Crystal structure of human ... FEBS Lett 579, 3330-5 (2005). 6. Bell, J.K. et al. Leucine-rich repeats and pathogen ...

  18. CX-100528 Categorical Exclusion Determination

    Broader source: Energy.gov [DOE]

    Innovative Pilot and Demonstration Scale Production of Advanced Biofuels Award Number: DE-EE0006242 CX(s) Applied: A9 Bioenergy Technologies Office Date: 07/16/2014 Location(s): IA Office(s): Golden Field Office

  19. A

    Office of Scientific and Technical Information (OSTI)

    watjr deompo,itjn L. 18 almo a functiot of ttmperture qnd ite value al 60L" C 10 l.o II IV, Little overpotentla ie obrerved in the reaction. The value E-lr ia the open...

  20. MEMORANDUM TO: FILE FROM:

    Office of Legacy Management (LM)

    p' : , .; ' ' < 3.518 MEMORANDUM TO: FILE FROM: -Ye L&a ---...e---e--- DATE 6j88 7 v---s -- ---... SUBJECT: ;&l a+-b IA Tcornqm Q afib4 SITE NAME: CITY: & &&at leg co ...