Results 21 to 30 of about 1,742 (119)
WC stars - Hot stars with cold winds
The Astrophysical Journal, 1989 The atmospheric structure of WC stars is studied. Detailed models reveal that the ionization of the envelope systematically decreases farther out into the wind. C(4+) and He(2+) dominate close to the star while C(2+) and He(+) dominate the outer regions. Ionizations from excited states play a key role in determining the envelope ionization structure. A
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Stellar Wind Signatures in SDB Stars? [PDF]
, 2003 2 pages, 1 figure, Proc. XIII Workshop on White Dwarfs, eds. D. de Martino, R. Kalytis, R. Silvotti, J.E.
Heber, U. +4 more
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Evidence for Azimuthal Asymmetry in Be Star Winds [PDF]
International Astronomical Union Colloquium, 1999 AbstractExtensive IUE observations from 1987-96 have provided compelling evidence for azimuthal asymmetry in the winds of Be stars. Two identified types of wind/FUV flux behavior are briefly discussed. Interpretations based upon both nonradial pulsations and rotation of one or more active regions appear plausible.
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Theory of Winds from Cool Stars [PDF]
Symposium - International Astronomical Union, 1987 The goal of this paper is to provide a framework for thinking about the various physical processes that may play significant roles in driving the massive winds of cool, low-gravity stars. First, some general theoretical considerations involving mass, momentum, and energy balance are discussed.
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The Theory of Winds in Early Type Stars [PDF]
International Astronomical Union Colloquium, 1981 I assume that the purpose of this review of the theory of winds from early type stars is to summarize the way in which the mass loss rate of a star may be included in a calculation of stellar evolution. Let me summarize my conclusions. It is not possible. One can only use estimates of mass loss rates obtained from the observations.
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Stellar Winds from Massive Stars [PDF]
, 2001 16 pages, 2 figures, Review paper to appear in Proc `The influence of binaries on stellar population studies', Brussels, Aug 2000 (D.
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Highly ionized stellar winds in Be stars. II - Winds in B6-B9.5e stars
The Astrophysical Journal, 1989 The results of a UV survey of stellar winds and circumstellar shells in 40 B6-B9.5e stars covering luminosity classes V-III are presented. A graph is presented of the region from 1520-1560 A, which includes both the Si II UV multiplet 2 transitions and the C IV resonance transition for selected Be stars in the sample. The detection of shortward-shifted
C. A. Grady +5 more
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Modeling the wind of the Be star SS 2883
Astronomy Reports, 2005 Observations of eclipses of the radio pulsar B1259-63 by the disk of its Be-star companion SS 2883 provide an excellent opportunity to study the winds of stars of this type. The eclipses lead to variations in the radio flux (due to variations in the free-free absorption), dispersion measure, rotation measure, and linear polarization of the pulsar.
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4 pages, 3 figures, to be published in the International Astronomical Union Proceedings Series for the IAU GA 2024 (Astronomy in Focus, Focus Meeting 4 "Bridging the final stages of massive stars to supernovae and transients")
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Measuring the magnetic fields in the chromospheres of low-mass stars [PDF]
Nat CommunCang T +13 more
europepmc +2 more sources