| Sample search results for: a-type stars magnetic |
| 1 | Division of Astronomy and Space Physics Stellar Magnetic Fields | ||
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Summary: on the surface of a magnetic A-type star (Kochukhov et al. 2004, A&A, 424, 935; Lüftinger et al. 2010, A&A, 509... , and structure formation. Surface and circumstellar magnetic field topology of the massive star HD37776 studied... , contrary to the common belief, ... |
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Source: Uppsala Universitet, Department of Theoretical Physics |
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Collection: Physics |
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| 2 | X-ray emission from Ap/Bp stars Bridging cool and hot stars | ||
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Summary: .06.2011 3 / 16 #12;X-rays from A-type stars The hottest cool stars: 'normal' A-type stars Teff 7500 - 10000... /early A-stars The coolest hot stars 'peculiar' A-type stars Teff 7500 - 14000 K, M 1.6 - ... |
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Source: Robrade, Jan - Hamburger Sternwarte, Universität Hamburg |
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Collection: Physics |
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| 3 | Stellar Physics and Stellar Activity Magnetic fields in massive stars | ||
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Summary: Stellar Physics and Stellar Activity Magnetic fields in massive stars S. Hubrig, I. Ilyin (AIP), M... about the existence, origin, and role of magnetic fields in massive OB stars. During our recent... stars in clusters and in the field five stars with mean ... |
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Source: Astrophysikalisches Institut Potsdam, Stellar Physics Group |
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Collection: Physics |
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| 4 | F. Combes, D. Barret, T. Contini, F. Meynadier and L. Pagani (eds) TURBULENT CONVECTION AND DYNAMO ACTION IN | ||
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Summary: & Toomre 2002; Brun et al. 2004) and of the convective core of an A-type stars (Browning et al. 2004; Brun... respectively the G and A-type stars as good proxy for envelope and core convection stars, thanks to the large... to be simplified version of the convective region of a ... |
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Source: Brun, Allan Sacha - Service d'Astrophysique, French Center for Atomic Research CEA |
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Collection: Physics |
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| 5 | A&A manuscript no. (will be inserted by hand later) | ||
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Summary: bright Atype stars. Their results show that !v sin i ? of 188 normal A0A1 stars is equal to 142 km... ;08.13.1;08.16.5;08.18.1) ASTRONOMY AND ASTROPHYSICS Loss of angular momentum of magnetic Ap stars in the premain sequence phase K... evolution of such stars. ... |
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Source: Stêpieñ, Kazimierz - Astronomical Observatory, Warsaw University |
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Collection: Physics |
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| 6 | Astron. Nachr. / AN XXX, No. X, 1 7 (2011) / DOI please set DOI! Magnetic fields of Ap stars as a result of Tayler instability | ||
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Summary: of field strengths, topologies, and rotational periods. Only a fraction of roughly 10% of all A-type stars... Astron. Nachr. / AN XXX, No. X, 1 7 (2011) / DOI please set DOI! Magnetic fields of Ap stars... words stars: chemically peculiar, magnetic fields ... |
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Source: Astrophysikalisches Institut Potsdam, Magnetohydrodynamics Group |
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Collection: Physics |
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| 7 | Astron. Nachr. / AN 999, No. 88, 1 7 (2006) / DOI please set DOI! The exceptional Herbig Ae star HD 101412 | ||
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Summary: are not progenitors of Ap stars. Generally, stellar magnetic fields in A-type stars on the main sequence... (HD 101412) -- stars: magnetic field -- stars: variables: general In our previous search for magnetic... fields in ... |
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Source: Astrophysikalisches Institut Potsdam, Magnetohydrodynamics Group |
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Collection: Physics |
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| 8 | Mon. Not. R. Astron. Soc. 401, L44L47 (2010) doi:10.1111/j.1745-3933.2009.00783.x The discovery of a 21-kG magnetic field in the Ap star BD+0 | ||
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Summary: -temperature A-type stars (below 8000 K), the Balmer line profiles are also good indicators of effective... of a 21-kG magnetic field in the Ap star BD+0 4535 V. G. Elkin,1 D. W. Kurtz,1 C. Nitschelm2 and E. Unda... found that the Ap star BD+0 4535 has a very strong ... |
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Source: Nitschelm, Christian - Departement Wiskunde & Informatica, Universiteit Antwerpen |
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Collection: Physics |
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| 9 | The University of Western Ontario DEPARTMENT OF PHYSICS AND ASTRONOMY | ||
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Summary: Alecian Royal Military College of Canada Kingston "Magnetism and rotation in the young Herbig Ae/Be stars... ) intermediate mass stars (A/B stars) show strong and large-scale magnetic fields. However, until recently... of the Herbig Ae/Be stars in order to investigate ... |
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Source: Lennard, William N. - Department of Physics and Astronomy, University of Western Ontario |
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Collection: Materials Science ; Physics |
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| 10 | Introduction 1.1 Overview | ||
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Summary: and 200kms \Gamma1 . Sargent (1965) estimates Boo stars comprise 12 percent of Atype dwarfs... and silicon overabundant heliumweak stars into the magnetic CP star class. The AmFm stars are nonmagnetic... ... |
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Source: Dworetsky, Mike - University of London Observatory & Department of Physics and Astronomy, University College London |
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Collection: Physics |
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| 11 | arXiv:0905.0864v2[astro-ph.SR]31May2009 Astronomy & Astrophysics manuscript no. 11533 c ESO 2009 | ||
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Summary: the A-type star HD 162725, for which pre- vious measurements exist both with FORS 1 and later with ESPa... . Recently, evidence for the presence of weak magnetic fields in Herbig Ae/Be stars has been found in several... . Results. Among the 21 Herbig Ae/Be stars studied, new detections of ... |
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Source: Osservatorio Astronomico Di Palermo, Giuseppe S. Vaiana |
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Collection: Physics |
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| 12 | Astron. Nachr. / AN 999, No. 88, 789 792 (2006) / DOI please set DOI! Dynamo Action in The Presence of an Imposed Magnetic Field | ||
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Summary: the interaction of such a magnetic field with a dynamo generated within the core of a 2 solar mass A-type star... of an A-type star. These two external fields were then su- perimposed on the existing magnetic field... 1 Introduction Much attention has been given to ... |
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Source: Brun, Allan Sacha - Service d'Astrophysique, French Center for Atomic Research CEA |
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Collection: Physics |
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| 13 | Astron. Astrophys. 359, 306310 (2000) ASTROPHYSICS | ||
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Summary: , there are 416 bright (V 6.5), single and normal A- type stars at distances below 100 pc ( > 10 mas... on rotation presented by Abt & Morrell (1995). Of the 416 bright single A-type stars with accurate Hipparcos... to a recent work, magnetic Ap ... |
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Source: Astrophysikalisches Institut Potsdam, Magnetohydrodynamics Group |
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Collection: Physics |
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| 14 | Why are magnetic Ap stars slowly rotating? K. Stepie'n 1 | ||
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Summary: Phenomena in Atype and Related Stars, eds.: M.M. Dworetsky, F. Castelli and R. Farraggiana, A.S.P. Conf... , in Peculiar versus Normal Phenomena in Atype and Related Stars, eds.: M.M. Dworetsky, F. Castelli and R... Why are magnetic Ap stars slowly rotating? K. ... |
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Source: Stêpieñ, Kazimierz - Astronomical Observatory, Warsaw University |
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Collection: Physics |
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| 15 | Mon. Not. R. Astron. Soc. 418, L133L137 (2011) doi:10.1111/j.1745-3933.2011.01159.x Weak-and strong-field dynamos: from the Earth to the stars | ||
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Summary: . Key words: dynamo planets and satellites: magnetic fields stars: low-mass stars: mag- netic... value of the scalar magnetic field at the surface of the star is inferred from the analysis... et al. (2009) show that dynamo action in a fully- convective sphere (simulating the core ... |
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Source: Dormy, Emmanuel - Laboratoire de Radioastronomie, Département de Physique, École Normale Supérieure |
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Collection: Physics |
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| 16 | arXiv:0706.0330v1[astro-ph]3Jun2007 Astronomy & Astrophysics manuscript no. 7343main c ESO 2007 | ||
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Summary: of magnetic fields as revealed by observations of Ap stars in open clusters and associations J. D. Landstreet1... of magnetic fields in cluster Ap stars with the goal of obtaining a sample of these stars with well... or association members and (2) magnetic Ap ... |
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Source: Armagh Observatory |
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Collection: Physics |
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| 17 | Astronomy & Astrophysics manuscript no. RRKolBagfinal c ESO 2009 February 10, 2009 | ||
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Summary: field approximation, which, e.g., in the atmosphere of main se- quence A-type stars, is valid for field... constraints on the magnetic field of RR Lyrae stars Katrien Kolenberg1 and Stefano Bagnulo2 1 Institut fuer... the presence of a magnetic field in RR Lyrae ... |
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Source: Armagh Observatory |
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Collection: Physics |
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| 18 | SUMMARY FOR COOL STARS 13: INTERNAL AND EXTERNAL CONNECTIONS Je#rey L. Linsky 1 | ||
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Summary: constraints on models for the decay phase of flares. 3.8. Do Atype stars have hot outer atmospheres? Beate... ): There are 73 apparently sin gle Atype stars in the ROSAT Allsky Survey (RASS) pointing error boxes. Some... the magnetic structures on stars. Also, ... |
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Source: Linsky, Jeffrey L. - JILA & Center for Astrophysics and Space Astronomy, University of Colorado at Boulder |
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Collection: Physics |
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| 19 | Convection in Astrophysics Proceedings IAU Symposium No. IAUS239, 2007 | ||
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Summary: in slowly rotating late Atype stars provide evidence for highamplitude convective motions. The properties... signatures of convective motions are observed in several classes of slowly rotating Atype stars... for the atmo spheric dynamics of Atype stars. 2. ... |
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Source: Astrophysikalisches Institut Potsdam, Stellar Physics Group |
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Collection: Physics |
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| 20 | Stellar magnetic activity The hot and cool end of the main sequence | ||
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Summary: Sternwarte Cool Stars 16 X-ray splinter session, Seattle 2010 #12;Overview 1 The 'hot' regime - A-type... , OVII f/i-ratio high solar-like FIP effect and Ne/O ratio 'Hottest' magnetically active type of star... Stellar magnetic activity The hot and cool end of the main sequence Jan ... |
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Source: Robrade, Jan - Hamburger Sternwarte, Universität Hamburg |
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Collection: Physics |
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| 21 | neutron-star magnetic fields | ||
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Summary: neutron-star magnetic fields and velocities van leeuwen verbunt intro magnetic fields beaming... synthesis code birthrates velocities conclusions a small window: neutron-star magnetic fields and velocities... joeri van leeuwen - frank verbunt utrecht university ... |
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Source: van Leeuwen, Joeri - Department of Physics and Astronomy, University of British Columbia |
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Collection: Physics |
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| 22 | A.C. Editor, B.D. Editor & C.E. Editor, eds. DOI: 00.0000/X000000000000000X Magnetic fields in A stars | ||
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Summary: to emerge. Keywords. stars: magnetic fields, MHD, stars: A-type 1. Introduction After several decades... ) explicitly addresses A-type stars, most of what I write will apply also to the fields of the magnetic Bp... @ma.man.ac.uk Abstract. Some ... |
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Source: Moss, David - Department of Mathematics, University of Manchester |
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Collection: Physics |
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| 23 | Planetary Nebula Planetary Nebula Planetary Nebula The bright glowing outer layers of gas | ||
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Summary: of a super nova explosion. Neutron stars with strong magnetic fields are called pulsars. The spinning core... from a red giant star. The explosion occurs when the hydrogen fuel in the core is depleted. Mass: 0... .5 - 1.0 SM StarPower Points: 5 The bright glowing outer layers of gas ejected from a red giant ... |
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Source: Bechtold, Jill - Steward Observatory & Department of Astronomy, University of Arizona |
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Collection: Physics |
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| 24 | Evolution of Xray activity of 1 --3 M fi latetype stars in early postmainsequence phases | ||
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Summary: with masses 1:5 ! M=M fi ! 3:0 (inactive Atype stars on the mainsequence) with respect to lower mass solar... CVntype binary. ffl 1:5 ! M=M fi ! 3:0: these stars (Atype on the mainsequence) show on average... , with respect to stars with 1:5 ! M=M fi ! 3:0 ... |
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Source: Osservatorio Astronomico Di Palermo, Giuseppe S. Vaiana |
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Collection: Physics |
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| 25 | Sample Second Exam Questions Astronomy 1020 Prof. Paul J. Wiita | ||
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Summary: . radiation . . . . . CNO cycle 10. Type Ia supernovae differ from Type II supernovae in that A. Type Ia SN... . is comprised of two rapidly spinning, highly magnetized, neutron stars. B. was involved in the award of a Nobel... ) stars on the Main Sequence (M < 0.5M ) is mainly by ... |
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Source: Wiita, Paul J. - Department of Physics and Astronomy, Georgia State University |
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Collection: Physics |
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| 26 | Astronomy & Astrophysics manuscript no. Gpraesepe c ESO 2007 October 2, 2007 | ||
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Summary: of the evolution of A-type stars on the main sequence: comparison between observed chemical abundances... spectra of eight previously-classified Am stars, two normal A-type stars and one Blue Straggler... as an Ap (Si) star, turns out to have the abundances of a ... |
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Source: Armagh Observatory |
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Collection: Physics |
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| 27 | arXiv:0710.1554v1[astro-ph]8Oct2007 Astronomy & Astrophysics manuscript no. 8189 c ESO 2007 | ||
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Summary: thousand main sequence A-type stars have been catalogued as magnetic Ap/Bp stars (Renson et al. 1991... obtained during these same observ- ing runs, including studies of non-magnetic A-type stars (e.g. Shorlin... 9, 2007 Weak ... |
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Source: Armagh Observatory |
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Collection: Physics |
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| 28 | Astronomy & Astrophysics manuscript no. 14027 c ESO 2010 April 20, 2010 | ||
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Summary: /late A-type stars a strong decline in magnetic activity occurs towards hotter stars because... -ray emission (Robrade & Schmitt 2009). The vanishing of magnetic activity in mid A- type stars is expected... the remarkable ... |
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Source: Robrade, Jan - Hamburger Sternwarte, Universität Hamburg |
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Collection: Physics |
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| 29 | Stellar magnetic field measurements Zeeman-Doppler imaging and magnetic-flux | ||
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Summary: and magnetic maps of the young star V410 Tau obtained with our own ZDI code iMAP reveal a strong bipolar... magnetic field structure in the dark polar region (ESPaDOnS). Understanding intermediate-mass star... Stellar magnetic field measurements Zeeman-Doppler imaging and ... |
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Source: Astrophysikalisches Institut Potsdam, Stellar Physics Group |
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Collection: Physics |
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| 30 | Astronomy & Astrophysics manuscript no. aah3570 (DOI: will be inserted by hand later) | ||
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Summary: responsible for the chemical peculiarities observed to some degree in almost all A-type stars. Finally... sensitive search for magnetic fields in B, A and F stars S. L. S. Shorlin1, G. A. Wade2, J.-F. Donati3, J. D... spectropolarimetric observations of 74 stars were obtained in an ... |
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Source: Donati, Jean-François - Observatoire Midi-Pyrénées |
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Collection: Physics |
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| 31 | X-ray Emission from Massive Stars | ||
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Summary: those found our own Sun and other cooler stars like the Sun that produce X-rays via magnetic activity... X-ray Emission from Massive Stars David Cohen Department of Physics and Astronomy Swarthmore... College http://astro.swarthmore.edu/~cohen Hot, massive stars are among the brightest objects |
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Source: Cohen, David - Department of Physics and Astronomy, Swarthmore College |
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Collection: Plasma Physics and Fusion ; Physics |
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| 32 | A&A 493, 11091119 (2009) DOI: 10.1051/0004-6361:200810540 | ||
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Summary: for the X-ray emis- sion of HAeBe stars has not been identified. Similar to the B- and A-type stars... A Djie et al. 1989). Another A-type star in the Chandra field, HR 6000, shares com- mon proper motion... star not known to have companion ... |
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Source: Robrade, Jan - Hamburger Sternwarte, Universität Hamburg |
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Collection: Physics |
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| 33 | THIRD ASSIGNMENT: Sample Exam Questions DUE: Wed. Nov. 15th Astronomy 1020, MW at noon Fall 2006 | ||
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Summary: from Type II supernovae in that A. Type Ia SN are all of about the same luminosity, while Type II... . is comprised of two rapidly spinning, highly magnetized, neutron stars. B. was involved in the award of a Nobel... . Energy transport in the cores of high mass (O) stars on the Main ... |
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Source: Wiita, Paul J. - Department of Physics and Astronomy, Georgia State University |
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Collection: Physics |
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| 34 | A&A manuscript no. (will be inserted by hand later) | ||
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Summary: . References Hunger K., Groote D., 1993, in: Peculiar versus Normal Phe nomena in Atype and Related Stars... rich stars is small. This would indicate that slow rotation is charac teristic of all mainsequence magnetic... Zboril M., Glagolevskij Yu. V., North P., 1994, in: Interna tional Conference ... |
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Source: Armagh Observatory |
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Collection: Physics |
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| 35 | Microwave emission from Xray bright solarlike stars: The FG main sequence and beyond | ||
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Summary: sequence Atype stars that enter (for the first time) into a regime of deep convective zones and... sequence stars are therefore thought to be magnetically inactive and to support compara tively weak... Microwave emission from Xray bright solarlike stars: The FG main sequence ... |
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Source: Guedel, Manuel - Institut für Astronomie, Universität Wien |
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Collection: Physics |
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| 36 | The University of Western Ontario DEPARTMENT OF PHYSICS AND ASTRONOMY | ||
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Summary: , are the chemically peculiar (CP) stars, which demonstrate unusual abundances, strong magnetic fields, surface... , and magnetically influenced atmospheres: that is, the actual atmospheres of CP stars. Finally, we present recent... Physics & Astronomy Dept. University of Western Ontario "Model atmospheres ... |
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Source: Lennard, William N. - Department of Physics and Astronomy, University of Western Ontario |
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Collection: Materials Science ; Physics |
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| 37 | X-RAY EMISSION FROM EARLY-TYPE STARS IN THE ORION NEBULA CLUSTER B. Stelzer,1, 2 | ||
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Summary: reconnection events in large magnetic loops as in the Sun and other magnetically active stars (Feigelson... . 2003), perhaps due to star- disk magnetic interactions (Hamaguchi et al. 2005). These issues can... roles of wind shocks and magnetic ac- tivity in the X-ray ... |
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Source: Micela, Giusi - Osservatorio Astronomico Di Palermo Giuseppe S. Vaiana |
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Collection: Physics |
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| 38 | Accepted to ApJSuppl, COUP Special Issue X-ray emission from early-type stars | ||
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Summary: peculiarities, or direct detection of the magnetic #12;eld (#18; 1 Ori C). Most of the stars in the weak... of these latter stars is attributed to ares resulting from reconnection events in large magnetic loops... as in the Sun and other magnetically active stars ... |
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Source: Osservatorio Astronomico Di Palermo, Giuseppe S. Vaiana |
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Collection: Physics |
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| 39 | Astronomy & Astrophysics manuscript no. mcws c ESO 2011 May 20, 2011 | ||
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Summary: young. Only a small fraction of about 5 % of the mid-B to mid-A type stars are magnetic; these stars... -B to mid-A type and belong to the class of chemically peculiar, magnetic Table 1. Basic properties of our... Aurigae and ... |
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Source: Robrade, Jan - Hamburger Sternwarte, Universität Hamburg |
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Collection: Physics |
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| 40 | High resolution spectroscopic characterization of the FGK stars in the solar neighbourhood | ||
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Summary: . Dworetsky, F. Castelli & R. Faraggiana, eds., IAU Colloq. 138: Pe- culiar versus Normal Phenomena in A-type... High resolution spectroscopic characterization of the FGK stars in the solar neighbourhood R. Mart... ) FGK stars which aim is to char- acterize the local properties of the Galaxy, in particular, the ... |
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Source: Gutiérrez, David Montes - Facultad de Ciencias Físicas, Universidad Complutense de Madrid |
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Collection: Physics |
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| 41 | This chapter is divided into three sections. Section 7.1, `Trends', highlights possible links between factors which may govern the emergence of the HgMn phenomenon | ||
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Summary: that strontium and barium were enhanced in a sample of Atype normal stars in the T eff range 8 800 10 900K... sequence star; mass transfer takes place because both stars are linked by a magnetic field. This theory has... have they been found to be magnetic. The ... |
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Source: Dworetsky, Mike - University of London Observatory & Department of Physics and Astronomy, University College London |
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Collection: Physics |
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| 42 | Stellar Flares: How Common? How Jeffrey L. Linsky | ||
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Summary: in the act. I INTRODUCTION Most stars with convective zones and strong magnetic fields show transient... in active stars [42]. The solar corona is likely heated by many small magnetic reconnection events. B d... unit area and time. Thus the heating rate and magnetic recombination rate ... |
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Source: Linsky, Jeffrey L. - JILA & Center for Astrophysics and Space Astronomy, University of Colorado at Boulder |
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Collection: Physics |
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| 43 | STELLAR CONVECTION : Theory and Models by Dr. A.S. Brun and M.S. Miesch | ||
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Summary: .S, Browning, M.K. & Toomre, J. 2005, Simulations of Core Convection in Rotating A-Type Stars: Magnetic Dynamo... .S. & Toomre, J. 2004, Simulations of Core Convection in Rotating A-Type Stars: Differential Rotation... turbulent plasmas and magnetic fields with ... |
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Source: Brun, Allan Sacha - Service d'Astrophysique, French Center for Atomic Research CEA |
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Collection: Physics |
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| 44 | A New Hubble Space Telescope Project for Fresno State, by Fred Ringwald. In 2001 August, I had an observing run on Keck I, the largest telescope on Earth, on Mauna Kea, Hawai'i. | ||
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Summary: and AR UMa. Magnetic cataclysmic variables are unusual star systems: both AM Her and AR UMa are called AM... magnetic cataclysmic variable, also called an AM Her star (also called a polar). The white dwarf has... such a strong magnetic field, the gas from the mass-losing ... |
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Source: Ringwald, Frederick A. - Department of Physics, California State University, Fresno |
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Collection: Physics |
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| 45 | Xrays from stars By Manuel G udel | ||
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Summary: F and Atype stars, the generation of magnetic fields and hence of Xray luminous coronae is supposed... to understand why hot, massive stars that are not supposed to possess magnetic fields are nevertheless luminous... active regions (figure 1). The underlying mechanism that ... |
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Source: Guedel, Manuel - Institut für Astronomie, Universität Wien |
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Collection: Physics |
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| 46 | Astronomy & Astrophysics manuscript no. GJpraesepeII c ESO 2008 March 26, 2008 | ||
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Summary: of rotation on the abundances of the chemical elements of the Atype stars in the Praesepe cluster L. Fossati1... . In this #12;2 L. Fossati et al.: Effect of rotation in abundances of Atype stars in the Praesepe cluster work... .obs-hp.fr/www/guide/sophie/sophie-eng.html #12;L. Fossati et al.: Effect of ... |
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Source: Armagh Observatory |
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Collection: Physics |
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| 47 | Altair -the hottest 'cool' star in X-rays J. Robrade and J.H.M.M. Schmitt | ||
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Summary: -Newton observation of Altair and study the coronal X-ray properties of a late A-type star for the first time... of spectral type, at least for late A-type to late K-type stars. A detailed discussion of the applied methods... Altair - the hottest 'cool' star in X-rays J. Robrade and ... |
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Source: Robrade, Jan - Hamburger Sternwarte, Universität Hamburg |
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Collection: Physics |
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| 48 | ASP Conference Series, Vol. **VOLUME**, **PUBLICATION YEAR** **EDITORS** | ||
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Summary: fields that led to the detection of magnetic fields on a new class of stars, the magnetic chemically... magnetic fields of cool active stars other than the Sun (e.g. Borra et al. 1984), recent work demonstrated... evolutionary stage like those of magnetic CP ... |
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Source: Donati, Jean-François - Observatoire Midi-Pyrénées |
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Collection: Physics |
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| 49 | The A-Star Puzzle Proceedings IAU Symposium No. 224, 2004 | ||
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Summary: A stars, HgMn, Am, and Ap stars, #21; Boo stars, magnetic #12;elds, rotation, convection, pulsations... of evolving Ap stars and drew di#11;erent conclusions: magnetic #12;elds should damp out di#11;erential... stars rotate as they evolve, and ... |
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Source: Dworetsky, Mike - University of London Observatory & Department of Physics and Astronomy, University College London |
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Collection: Physics |
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| 50 | The A-Star Puzzle Proceedings IAU Symposium No. 224, 2004 | ||
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Summary: , Boo stars, magnetic fields, rotation, convection, pulsations, supergiant stars, and observational... faster than the outside. Arlt discussed internal magnetic fields and rotation of evolving Ap stars... magnetic fields arise in A stars and to ... |
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Source: Dworetsky, Mike - University of London Observatory & Department of Physics and Astronomy, University College London |
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Collection: Physics |
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| 51 | The University of Western Ontario DEPARTMENT OF PHYSICS AND ASTRONOMY | ||
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Summary: of the structure, evolution and origin of magnetic fields in stars. Results such as these are leading to a new... Associate Professor of Physics Royal Military College of Canada "Invisible fingers in the pudding: magnetic... fields and stellar activity" ABSTRACT Magnetic fields are a natural and common ... |
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Source: Lennard, William N. - Department of Physics and Astronomy, University of Western Ontario |
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Collection: Materials Science ; Physics |
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| 52 | X-shooter Science Verification Proposal Title: Probing the magnetospheric accretion in magnetic Herbig Ae stars | ||
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Summary: to the interaction of the disk with a magnetically active star. This interaction is generally referred... for only a few magnetic Herbig Ae stars. We propose to use X-shooter to compare the accretion properties... of strongly and weakly magnetic Herbig Ae stars using ... |
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Source: Liske, Jochen - European Southern Observatory |
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Collection: Physics |
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| 53 | The physics of sun and star spots Proceedings IAU Symposium No. 273, 2010 | ||
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Summary: constant in time for half a century, and only a fraction of 10% or less of all A-type stars show magnetic... phenomena relevant for stellar magnetic fields. The full MHD treatment of a star is a problem which... to the complex activity features observed on stars. ... |
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Source: Astrophysikalisches Institut Potsdam, Magnetohydrodynamics Group |
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Collection: Physics |
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| 54 | Living Rev. Solar Phys., 2, (2005), 8 http://www.livingreviews.org/lrsp-2005-8 | ||
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Summary: , 1967). Observations reveal that there are two subclasses of W UMa stars: A-type and W-type systems... -4961 Abstract Magnetic activity similar to that of the Sun is observed on a variety of cool stars with ex... phenomena are observed on cool stars with outer convection zones. Studying ... |
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Source: Berdyugina, Svetlana - Kiepenheuer Institut für Sonnenphysik |
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Collection: Physics |
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| 55 | March 3, 2011 Search of X-ray emission from roAp stars: The case of Equulei | ||
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Summary: and age of Equ A are similar to the normal, i.e. non-peculiar, A-type star Altair shown by Robrade... -02-2011> ABSTRACT Context. Rapidly oscillating Ap (roAp) stars represent a subclass of magnetic, chemically peculiar... stars. The explanation for their pulsations includes ... |
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Source: Osservatorio Astronomico Di Palermo, Giuseppe S. Vaiana |
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Collection: Physics |
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| 56 | Mon. Not. R. Astron. Soc. 398, 189200 (2009) doi:10.1111/j.1365-2966.2009.14881.x Surface magnetic fields on two accreting T Tauri stars: CV Cha | ||
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Summary: their magnetic fields should evolve rapidly to comply with the relatively weak fields observed in A-type stars... .3 Evolutionary status and magnetic fields CV Cha and CR Cha are progenitors of early F- and late A-type ZAMS... - and K-type T Tauri stars in the ... |
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Source: Aulanier, Guillaume - Observatoire de Paris |
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Collection: Physics |
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| 57 | The formation of Be stars through close binary O.R. Pols, J. Cot'e, L.B.F.M. Waters & J. Heise | ||
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Summary: 2 The formation of Be stars through close binary evolution O.R. Pols, J. Cot'e, L.B.F.M. Waters & J... intermediatemass main sequence stars are calculated. During mass transfer, the original secondaries... are rejuvenated and spun up. These rapidly rotating B stars should have either a helium star, a ... |
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Source: Pols, Onno - Sterrenkundig Instituut, Universiteit Utrecht |
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Collection: Physics |
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| 58 | A&A manuscript no. (will be inserted by hand later) | ||
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Summary: versus normal phenomena in Atype and related stars'', ASP Conf. Ser. 44, 274 Magazzu A., Cowley C... , photometric and magnetic variations. Because this solution provides a simpler model for the star's geometry... .551 (pluses, magnetic minimum) and at phase 0.952 ... |
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Source: Landstreet, John D. - Department of Physics and Astronomy, University of Western Ontario |
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Collection: Physics |
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| 59 | A&A 402, 247252 (2003) DOI: 10.1051/0004-6361:20030266 | ||
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Summary: . Introduction A century ago, Antonia Maury (1897) detected a subclass of A-type stars with peculiar lines... Phenomena in A-type and Related Stars, ed. M. M. Dworetsky, R. Castelli, & R. Faraggiana, ASP Conf. Ser., 44... - coincidence of the magnetic and rotational axes (Stibbs 1950). ... |
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Source: Langer, Norbert - Sterrenkundig Instituut, Universiteit Utrecht |
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Collection: Physics |
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| 60 | ASTRONOMY: STARS & GALAXIES EXAM 2 REVIEW SHEET | ||
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Summary: radio sources (sometime other wavelengths) magnetized rotating neutron star Black holes even horizon... ASTRONOMY: STARS & GALAXIES EXAM 2 REVIEW SHEET THE INTERSTELLAR MEDIUM Giant molecular clouds... , reddening, polarization 21-cm H I line reflection nebulae usually bluer than illuminating star ... |
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Source: Sitko, Michael L. - Department of Physics, University of Cincinnati |
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Collection: Physics |
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| 61 | The Nature and Evolution of Disks Around Hot Stars ASP Conference Series, Vol. TBD, 2005 | ||
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Summary: of circumstellar disks; and X-ray line di- agnostics of one specific magnetized hot star, 1 Ori C. Some common... diagnostics to infer the physical properties of, and causal mechanisms at work in, the young magnetized O star... . 2004). #12;Diagnostics of Disks Around Hot Stars 9 4. X-ray ... |
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Source: Cohen, David - Department of Physics and Astronomy, Swarthmore College |
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Collection: Plasma Physics and Fusion ; Physics |
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| 62 | Annu. Rev. Astron. Astrophys. 2002. 40:21761 doi: 10.1146/annurev.astro.40.060401.093806 | ||
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Summary: astronomy, suggesting the presence of magnetic fields and high-energy electrons. Moving toward A-type stars... magnetic coronae, tran- sition regions and chromospheres, stars shedding winds, colliding-wind binaries... magnetically active stars ... |
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Source: Linsky, Jeffrey L. - JILA & Center for Astrophysics and Space Astronomy, University of Colorado at Boulder |
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Collection: Physics |
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| 63 | High resolution spectroscopic characterization of the FGK stars in the Solar neighbourhood | ||
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Summary: Phenomena in A-type and Related Stars, volume 44 of Astronomical Society of the Pacific Conference Series... High resolution spectroscopic characterization of the FGK stars in the Solar neighbourhood R. M... long-term high resolution spectro- scopic study of nearby (d < 25 pc) FGK stars which aim |
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Source: Gutiérrez, David Montes - Facultad de Ciencias Físicas, Universidad Complutense de Madrid |
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Collection: Physics |
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| 64 | A&A manuscript no. (will be inserted by hand later) | ||
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Summary: of the observed rotation period of a magnetic Ap star, CU Vir, reported recently by Pyper et al. (1998... magnetic field. Key words: stars: chemically peculiar -- stars: individual CU Vir -- stars: variable 1... , the generally accepted oblique rotator model of a ... |
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Source: Stêpieñ, Kazimierz - Astronomical Observatory, Warsaw University |
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Collection: Physics |
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| 65 | The University of Western Ontario DEPARTMENT OF PHYSICS AND ASTRONOMY | ||
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Summary: University of Delaware "Magnetic confinement of radiatively driven winds around hot, luminous stars" ABSTRACT... Hot, luminous stars are not expected to possess magnetic fields, owing to their lack of a subsurface... the 1970s that a small subset of these stars harbor strong, ... |
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Source: Lennard, William N. - Department of Physics and Astronomy, University of Western Ontario |
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Collection: Materials Science ; Physics |
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| 66 | A&A manuscript no. (will be inserted by hand later) | ||
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Summary: -main sequence Herbig Ae stars exhibit conspicuous signs of winds and activity, while main sequence A-type stars... of a magnetic #12;eld in an early Be star, #12; Cep, adds credit to this hypothesis (Henrichs et al. 2000... .09.1)08.(08.13.2;08.18.1) Mass-loss induced instabilities in ... |
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Source: Lignières, François - Astronomy Unit, Queen Mary and Westfield College |
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Collection: Physics |
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| 67 | A&A 497, 511520 (2009) DOI: 10.1051/0004-6361/200811348 | ||
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Summary: The onset of magnetic activity in late A-type stars as well as the regime of very inactive stars are only... . This transition of stellar interior structure is expected to occur in late A-type stars. Aims. The A7 star Altair... for studying the ... |
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Source: Robrade, Jan - Hamburger Sternwarte, Universität Hamburg |
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Collection: Physics |
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| 68 | To appear in "Magnetic fields in the Universe II (2008)" RevMexAA(SC) MAGNETIC FIELDS IN STAR FORMATION: FROM GALAXIES TO STARS | ||
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Summary: To appear in "Magnetic fields in the Universe II (2008)" RevMexAA(SC) MAGNETIC FIELDS IN STAR... will do it for you. Magnetic fields are important at every scale in the star formation process: from... is the effect of magnetic fields on fragmentation in ... |
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Source: Price, Daniel - School of Physics, University of Exeter |
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Collection: Physics |
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| 69 | The Solar-Stellar-MHD Connection We focus on the magnetic-field driven similarities, | ||
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Summary: ? A delicate balance between the star's magnetic activity, the way the planet formation proceeded... differential rotation that drive a star's dynamo, the detailed interaction of magnetic fields with convective... The Solar-Stellar-MHD Connection We focus on the magnetic-field driven ... |
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Source: Astrophysikalisches Institut Potsdam, Stellar Physics Group |
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Collection: Physics |
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| 70 | HamburgerSternwarteeROSITA2011 eROSITA and the solar neighborhood | ||
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Summary: magnetically active stars. that allows to address a large variety of science topics including stellar... and their presence in the solar neighborhood (d 30 pc): · cool stars (late A to late M-type) X-rays from magnetic... ) · weakly active solar-type stars (log LX/Lbol < -5) · ... |
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Source: Robrade, Jan - Hamburger Sternwarte, Universität Hamburg |
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Collection: Physics |
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| 71 | Star Clusters Proceedings IAU Symposium No. 266, 2009 | ||
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Summary: Star Clusters Proceedings IAU Symposium No. 266, 2009 Richard de Grijs & Jacques R. D. L´epine, eds... open clusters located in star-formation regions of the Eagle Nebula or the Carina in the MW, and NGC346... Ae/Be stars, classical Be stars and to provide new tests / comparisons about the Be ... |
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Source: Ecole Polytechnique, Centre de mathématiques |
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Collection: Mathematics |
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| 72 | The University of Western Ontario DEPARTMENT OF PHYSICS AND ASTRONOMY | ||
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Summary: relationship for the magnetized planets in the Solar System. Two stars have shown chromospheric activity... of their host stars, allowing direct magnetic interaction with the stellar surface. I shall also briefly... Shkolnik University of Hawaii at Mnoa NASA Astrobiology Institute ... |
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Source: Lennard, William N. - Department of Physics and Astronomy, University of Western Ontario |
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Collection: Materials Science ; Physics |
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| 73 | Stellar Magnetic Fields Jean-Fran cois Donati | ||
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Summary: -francois.donati@obs-mip.fr Abstract Since the #12;rst detection of magnetic #12;elds on the Sun (Hale 1908) and stars (Babcock 1947... of magnetic #12;elds on stellar spectra), magnetic #12;elds are now detected in a few hundreds of stars... a major role in many astrophysical problems; ... |
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Source: Donati, Jean-François - Observatoire Midi-Pyrénées |
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Collection: Physics |
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| 74 | Magnetic Channeling of Radiatively Driven Hot-Star Winds | ||
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Summary: Magnetic Channeling of Radiatively Driven Hot-Star Winds Stan Owocki , Rich Townsend and Asif ud... . Spectropolarimetric observations have detected substantial large-scale dipole magnetic fields for several hot stars... -ray observatory for magnetic hot stars like ... |
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Source: Owocki, Stanley P. - Department of Physics and Astronomy, University of Delaware |
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Collection: Physics |
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| 75 | The Astrophysical Journal, 630:L81L84, 2005 September 1 2005. The American Astronomical Society. All rights reserved. Printed in U.S.A. | ||
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Summary: versus Normal Phenomena in A-Type and Related Stars, ed. M. M. Dworetsky, F. Castelli, & R. Far- aggiana... August 12 ABSTRACT We characterize the observed variability of the magnetic helium-strong star j Ori E... , confirming that it furnishes an es- sentially correct, quantitative description of the ... |
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Source: Townsend, Richard - Department of Astronomy, University of Wisconsin at Madison |
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Collection: Physics |
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| 76 | HIGHENERGY PROCESSES YOUNG STARS: CHANDRA XRAY SPECTROSCOPY HDE 283572, TAU, AND LkCa | ||
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Summary: current solar system. Chandra served 100 WTTS HDE 283572 which probes PMS stage of massive Atype stars... (1998a). Its and spectral type suggest it is probable predecessor Atype mainsequence star (Favata 1998... main sequence -- Xrays: stars 1. Introduction Weaklined Tauri ... |
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Source: Guedel, Manuel - Institut für Astronomie, Universität Wien |
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Collection: Physics |
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| 77 | A&A 457, 223235 (2006) DOI: 10.1051/0004-6361:20065006 | ||
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Summary: -ray temperature for the HAeBe stars (filled squares), the MS B-type stars (filled triangles) and the ONC B/A-type... the others, because they do not in- clude A-type stars. A few HAeBe stars have been reported to be very lumi... -Newton observation of HD 104237. The ... |
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Source: Micela, Giusi - Osservatorio Astronomico Di Palermo Giuseppe S. Vaiana |
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Collection: Physics |
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| 78 | Astronomy & Astrophysics manuscript no. 5006 c May 24, 2006 | ||
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Summary: ) and the ONC B/Atype stars (filled circles). Lower mass companions to each of these groups are represented... of HD 104237. The Xray emission from lowermass preMS stars (TTS) arises from magnetically heated... mea surements of magnetic fields on HAeBe stars ... |
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Source: Osservatorio Astronomico Di Palermo, Giuseppe S. Vaiana |
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Collection: Physics |
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| 79 | Astronomy & Astrophysics manuscript no. abauraccepted c ESO 2006 October 13, 2006 | ||
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Summary: ., 1999). If convection is absent - as in main-sequence A- type stars - then fossil magnetic fields... and A-type stars, Herbig stars are generally supposed to be radiative in their in- teriors. The lack... an unequivocal explanation. In ... |
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Source: Audard, Marc - INTEGRAL Science Data Centre & Observatory of Geneva, Université de Genève |
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Collection: Physics |
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| 80 | K. Stepie'n The present conference is a continuation of a series of meetings on CP stars, organised every two years by | ||
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Summary: there a connection between rotation of CP star progenitors and their magnetic fields?'' The papers by V.P. Grinin... magnetic fields? What is the distribution of these fields among stars of different types (including... of selected lines on apparent abundances of chemical elements in ... |
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Source: Stêpieñ, Kazimierz - Astronomical Observatory, Warsaw University |
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Collection: Physics |
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| 81 | The University of Western Ontario DEPARTMENT OF PHYSICS AND ASTRONOMY | ||
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Summary: Physics & Astronomy Department Northwestern University, IL "Mapping Magnetic Fields in Star Forming Clouds... the interstellar magnetic field as a key player, since this field is well coupled to the interstellar gas in star... " ABSTRACT We don't yet know what processes determine the masses of ... |
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Source: Lennard, William N. - Department of Physics and Astronomy, University of Western Ontario |
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Collection: Materials Science ; Physics |
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| 82 | Active OB stars: structure, evolution, mass loss and critical limits Proceedings IAU Symposium No. 272, 2011 | ||
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Summary: : emission-line, Be, stars: formation, stars: evolution, stars: rotation, stars: abundances, stars: magnetic... of extreme stars 9 6. Spectropolarimetry: magnetic fields and disks The spectropolarimetry is a useful tool... for ... |
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Source: Ecole Polytechnique, Centre de mathématiques |
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Collection: Mathematics |
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| 83 | Astronomy & Astrophysics manuscript no. 5422 c ESO 2007 February 15, 2007 | ||
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Summary: and accreting, making their study much more difficult. Like their main-sequence descendants, B and A-type stars... Stars: magnetic fields X-rays: stars Stars: individual: AB Aur 1. Introduction Herbig Ae/Be stars... are expected at the ... |
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Source: Guedel, Manuel - Institut für Astronomie, Universität Wien |
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Collection: Physics |
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| 84 | Mem. S.A.It. Vol. 0, 1 c SAIt 2004 Memorie della | ||
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Summary: -mail: guedel@astro.phys.ethz.ch Abstract. Magnetic coronae are found not only on the Sun and solar-like stars... : coronae Accretion disks: coronae Stars: accretion Stars: magnetic fields 1. Introduction Best known... -scale magnetic fields around young ... |
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Source: Guedel, Manuel - Institut für Astronomie, Universität Wien |
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Collection: Physics |
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| 85 | Stellar Rotation Proceedings IAU Symposium No. 215, c | ||
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Summary: , eds. Rotation and magnetic #12;elds of solar-like stars J.-F. Donati Observatoire Midi-Pyr#19;en#19... generally, one is interested in how magnetic #12;elds interact with the rotation of a star like the Sun... possibility of reconstructing brightness and magnetic images of the surfaces ... |
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Source: Donati, Jean-François - Observatoire Midi-Pyrénées |
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Collection: Physics |
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| 86 | 8.4 White Dwarfs As an asymptotic giant branch star becomes larger and more luminous, the | ||
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Summary: 's magnetic field. Surrounding the core is a neutron mantle, then a iron-rich crust. Pulsars: Every star has... a magnetic field, usually a very weak one. However, when a stellar core is compressed into a neutron star... and electrons near the surface of the neutron star will be sweep up ... |
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Source: Peletier, Reynier - Kapteyn Astronomical Institute, Rijksuniversiteit Groningen |
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Collection: Physics |
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| 87 | A&A manuscript no. (will be inserted by hand later) | ||
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Summary: momentum loss in the premain sequence phase: the case of very slowly rotating magnetic Ap stars K. Ste... discovered that almost all the magnetic Ap stars having rotation periods longer than about one month have... their magnetic and rotation axes fairly closely aligned, in contrast to ... |
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Source: Landstreet, John D. - Department of Physics and Astronomy, University of Western Ontario |
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Collection: Physics |
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| 88 | Vol. 29 (1998) ACTA PHYSICA POLONICA B No 12 NEUTRON STARS: FORMATION AND STRUCTURE | ||
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Summary: the discovery radio pulsars were identified with rotating magnetized neutron stars [1]. Since then a number... containing neutron stars. 2.1. Radio pulsars Radio pulsars are rapidly rotating strongly magnetized neutron... with the mass 10M40M. The neutron star is strongly ... |
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Source: Magiera, Andrzej - Instytut Fizyki, Uniwersytet Jagiellonski |
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Collection: Physics |
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| 89 | REVISED MK SPECTRAL ATLAS FOR STARS EARLIER THAN THE SUN | ||
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Summary: Lep: An AType Shell Star . . . . . . . . . . . . . . . . . . . . . . . 8 Plate. 23. Two Diffuse K... with objective prism cameras. Plate. 22. 17 Lep: An AType Shell Star The exceedingly strong shell absorptions... REVISED MK SPECTRAL ATLAS FOR STARS EARLIER THAN THE SUN W. W. Morgan ... |
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Source: Dworetsky, Mike - University of London Observatory & Department of Physics and Astronomy, University College London |
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Collection: Physics |
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| 90 | Astronomy 110-1 PROBLEM SET #6 (15 Pts) ________________________________ Name | ||
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Summary: Fri, 20 November, 2009 ________________________________ ID # 1. A 1 solar mass star will most likely... weight of uranium are built up in massive stars in what part of their evolutionary cycle ? (1pt) ( red... for a 1 solar mass star last ? (1pt) ( 1011 , 106 , 1010 , 104 , 102 ) years 4. The age of a cluster |
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Source: Sanders, David B. - Department of Physics and Astronomy, Institute for Astronomy, University of Hawai'i at Manoa |
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Collection: Physics |
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| 91 | Astronomy 110-1 PROBLEM SET #6 (15 Pts) _________ ANSWER KEY ________ Name | ||
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Summary: Fri, 20 November, 2009 ________________________________ ID # 1. A 1 solar mass star will most likely... to the atomic weight of uranium are built up in massive stars in what part of their evolutionary cycle ? (1pt... for a 1 solar mass star last ? (1pt) ( 1011 , 106 , 1010 , 104 , 102 ) years 4. The age of a cluster |
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Source: Sanders, David B. - Department of Physics and Astronomy, Institute for Astronomy, University of Hawai'i at Manoa |
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Collection: Physics |
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| 92 | ASTRONOMY: STARS & GALAXIES EXAM 2 REVIEW SHEET | ||
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Summary: wavelengths) magnetized rotating neutron star Black holes even horizon, Schwarzschild radius "fuel... ASTRONOMY: STARS & GALAXIES EXAM 2 REVIEW SHEET THE INTERSTELLAR MEDIUM Giant molecular clouds... , polarization 21-cm H I line reflection nebulae usually bluer than illuminating star ... |
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Source: Sitko, Michael L. - Department of Physics, University of Cincinnati |
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Collection: Physics |
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| 93 | C h a p t e r 10 Our analysis of the Ae/Be clusters has provided the most comprehensive | ||
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Summary: of Ae/Be stars, the youngest known examples of massive optically visible stars. We have taken the last... a quantitative understanding of the overall characteristics of these and other starforming environments, which... might be conducive to their production of highmass stars. We begin by describing the ... |
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Source: Hillenbrand, Lynne - Astronomy Department, California Institute of Technology |
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Collection: Physics |
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| 94 | Isaac Newton Institute for Mathematical Sciences Magnetohydrodynamics of Stellar Interiors | ||
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Summary: ),Professor N.O. Weiss (Cambridge) Magnetic fields in stars like the Sun give rise to a wide range... of the magnetic field in the ionized, electrically conducting gas (a plasma) of which the star is composed... of fascinating phenomena, including flares, spots, prominences and X-ray emission. Although such ... |
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Source: Isaac Newton Institute for Mathematical Sciences |
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Collection: Mathematics |
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| 95 | M.R.Burleigh 2601 DEPARTMENT OF PHYSICS AND ASTRONOMY | ||
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Summary: M.R.Burleigh 2601 DEPARTMENT OF PHYSICS AND ASTRONOMY Life Cycle of Stars Revision lecture Lecture... slides available in powerpoint and pdf from www.star.le.ac.uk/~mbu/lectures.html #12;M.R. Burleigh 2601... to focus on #12;M.R. Burleigh 2601/Revision 2011 Lifecycles of Stars § Unit 1 - Observational properties |
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Source: Burleigh, Matt - Department of Physics and Astronomy, University of Leicester |
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Collection: Physics |
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| 96 | A&A 452, 10011010 (2006) DOI: 10.1051/0004-6361:20054405 | ||
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Summary: . At the distance of 100-200 pc, where many of the X-ray emitting B- and A-type stars are located, this cor... to consider the faint objects found at a separation of a few arc-seconds from nearby B- and A-type stars bound... 10" A HD 134837 E N 5" A B HD 134946 E N 10" A B Fig. 1. Chandra ACIS images of ... |
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Source: Micela, Giusi - Osservatorio Astronomico Di Palermo Giuseppe S. Vaiana |
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Collection: Physics |
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| 97 | Magnetic fields and radiative feedback in the star formation process | ||
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Summary: Magnetic fields and radiative feedback in the star formation process Daniel J. Price, and Matthew R... suggests that our understanding of the role of magnetic fields in star formation is not yet complete... outer regions [12]. The effect of a magnetic field on the self-gravitating ... |
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Source: Price, Daniel - School of Physics, University of Exeter |
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Collection: Physics |
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| 98 | arXiv:1009.3563v1[astro-ph.SR]18Sep2010 Active OB stars Proceedings IAU Symposium No. 272, 2010 | ||
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Summary: . The Magnetism in Massive Stars (MiMeS) Project is a consensus collaboration among many of the foremost... B5-O4, discovering new magnetic fields in a dozen hot, massive stars. The quality of this spectral... . Magnetic fields, massive stars, hot ... |
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Source: Townsend, Richard - Department of Astronomy, University of Wisconsin at Madison |
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Collection: Physics |
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| 99 | Dense matter in neutron stars and their envelopes | ||
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Summary: of neutron stars with magnetic fields 1 Ioffe Physical-Technical Institute, St.Petersburg 2 CRAL, Ecole... the strong magnetic field of a rapidly rotating neutron star, charged particles are accelerated... . Neutron stars the stars with the strongest ... |
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Source: Ioffe Physico-Technical Institute, Department of Theoretical Astrophysics |
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Collection: Physics |
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| 100 | CHANDRA OBSERVATION OF THE TRIFID NEBULA: X-RAY EMISSION FROM THE O STAR COMPLEX AND ACTIVELY FORMING PREMAIN-SEQUENCE STARS | ||
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Summary: include un- usual variability from the O star and unusual emission from an A-type supergiant. We also... ) is classified as an A2 Ia (Gahm et al. 1983) or possibly as an A2 III star (Lindroos 1985). A-type stars... that the X-ray luminosity of PMS stars depends on ... |
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Source: Corcoran, Michael Francis - High Energy Astrophysics Science Archive Research Center, USRA/NASA |
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Collection: Physics |
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