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Atmospheres of Central Stars [PDF]
Symposium - International Astronomical Union, 1978 This review begins with a brief summary of atmospheric models that are of possible relevance to the central stars of planetary nebulae, and then discusses the extent to which these models accord with the observations of both nebulae and central stars. Particular attention is given to the significance of the very high Zanstra temperature implied by the ...
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Neutron Star Atmosphere–Ocean Dynamics
The Astrophysical JournalAbstract We analyze the structure and dynamics of the plasma atmospheres and Coulomb-liquid oceans on neutron stars. Salient dynamical parameters are identified and their values estimated for the governing set of magnetohydrodynamics equations.
Joonas Nättilä +4 more
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Atmospheric Parameters and Abundances of sdB Stars [PDF]
Astrophysics and Space Science, 2004 To appear in "Extreme Horizontal Branch Stars and Related Objects", Astrophysics and Space Science, Kluver Academic Publishers, edited by P.F.L ...
Heber, U., Edelmannn, H.
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Magnetic neutron star atmospheres
The Astrophysical Journal, 1988 L'alteration de l'espace de phase des electrons dans de forts champs magnetiques resulte en conductivites thermiques, opacites radiatives et pressions electroniques qui different des quantites non magnetiques correspondantes.
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Line-blanketed model atmospheres for WR stars [PDF]
Astronomy & Astrophysics, 2002 We describe the treatment of iron group line-blanketing in non-LTE model atmospheres for WR stars. As an example, a blanketed model for the early-type WC star WR 111 is compared to its un-blanketed counter- part. Blanketing aects the ionization structure and the emergent flux distribution of our models.
Gräfener, Götz +2 more
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3. Wolf-Rayet star atmospheres [PDF]
Transactions of the International Astronomical Union, 1985 Wolf-Rayet (WR) stars are the helium-burning remnants of massive stars (initial mass ≲30 M©), which have lost their outer hydrogen-rich layers through the processes of Roche lobe overflow to a companion or mass loss by a strong stellar wind. The characteristic emission-line spectrum which defines the WR spectral type is produced by a stellar wind that ...
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Model Atmospheres for Low-Field Neutron Stars [PDF]
The Astrophysical Journal, 1996 We compute model atmospheres and emergent spectra for low field (B<10^10 G) neutron stars, using new opacity and equation of state data from the OPAL project. These computations, incorporating improved treatments of flux transport and convective stability, provide spectra for hydrogen, solar abundance and iron atmospheres.
Rajagopal, Mohan, Romani, Roger
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Model atmospheres for neutron stars [PDF]
Monthly Notices of the Royal Astronomical Society, 1992 While the presence of an atmosphere on a neutron star will not significantly modify its total thermal emission, it may change the emission in the sensitivity bands of detectors such as Einstein or ROSAT so that the inferred surface temperature (from a blackbody curve) may be quite different from the actual surface temperature.
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On the outer atmospheres of hybrid stars
The 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
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Tomography of evolved star atmospheres
, 2022 Published on the Hypatia Colloquium 2022 book of ...
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