Results 11 to 20 of about 1,100 (218)

Atmospheric Dynamics of Luminous Stars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1989
Abstract A review is given of data and theories on the motion fields in super and hypergiants with special reference to LBV’s. We show that the radiative momentum flux is incapable of driving the episodical bursts of mass loss of these stars, and that there are several indications that the LBV-phenomenon is hydrodynamically driven.
Cornells de Jager   +4 more
openaire   +1 more source

CARBON NEUTRON STAR ATMOSPHERES [PDF]

open access: yesThe Astrophysical Journal Supplement Series, 2013
The accuracy of measuring the basic parameters of neutron stars is limited in particular by uncertainties in chemical composition of their atmospheres. For example, atmospheres of thermally - emitting neutron stars in supernova remnants might have exotic chemical compositions, and for one of them, the neutron star in CasA, a pure carbon atmosphere has ...
Suleimanov V.   +3 more
openaire   +5 more sources

Model Atmospheres of Be Stars [PDF]

open access: yesSymposium - International Astronomical Union, 1982
The basic concept of what a Be star is we owe to Struve (1931). His proposal that these stars are rapidly rotating and have an extended, disc-like, circumstellar envelope is still the basis for all models of Be stars. Unfortunately, progress in understanding the dynamics of Be stars has been painfully slow, a consequence of the very complex nature of ...
openaire   +1 more source

Atmosphere of Stars [PDF]

open access: yesNature, 1973
Basic Physics of Stellar Atmospheres. By T. L. Swihart. Pp. viii + 86. (Pachart: Tucson, 1972.) $7.95.
openaire   +1 more source

On the outer atmospheres of hybrid stars

open access: yesThe Astrophysical Journal, 1985
Deep exposures with the IUE satellite have been obtained in order to search for high-temperature emission from stars with cool winds. Iota Aur and Theta Her are confirmed as hybrid stars, and an additional hybrid object, Gamma Aql, has been discovered.
Hartmann, L   +3 more
openaire   +1 more source

Neutron Star Atmospheres [PDF]

open access: yesInternational Astronomical Union Colloquium, 2000
Abstract Properties of the thermal radiation emitted by neutron stars (NSs) are determined by thin plasma layers (atmospheres) at their surfaces. The NS atmospheres are very different from those of usual stars due to the immense gravity and huge magnetic fields.
George G. Pavlov, V. E. Zavlin
openaire   +1 more source

White dwarf stars with carbon atmospheres [PDF]

open access: yesNature, 2007
White dwarfs represent the endpoint of stellar evolution for stars with initial masses between approximately 0.07 and 8-10, where is the mass of the Sun (more massive stars end their life as either black holes or neutron stars). The theory of stellar evolution predicts that the majority of white dwarfs have a core made of carbon and oxygen, which ...
Dufour, Patrick   +3 more
openaire   +5 more sources

Modeling Neutron Star Atmospheres

open access: yes, 2002
10 pages, 13 color figures; to be published in Proceedings of the 270. Heraeus Seminar on Neutron Stars, Pulsars and Supernova Remnants, Bad Honnef (Germany), Jan. 21-25, 2002, eds. W. Becker, H.
Zavlin, V., Pavlov, G.
openaire   +3 more sources

Two-fluid atmosphere for relativistic stars [PDF]

open access: yesClassical and Quantum Gravity, 1999
We have extended the Vaidya radiating metric to include both a radiation fluid and a string fluid. This paper expands our brief introduction to extensions of the Schwarzschild vacuum which appeared in 1998 Phys. Rev. D Vol 57, R5945. Assuming diffusive transport for the string fluid, we find new analytic solutions of Einstein's field equations.
Glass, E. N., Krisch, Jean P.
openaire   +3 more sources

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