Astrophysical: Stellar atmospheres

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    Multidimensional radiative transfer in stratified atmospheres. VI - Radiative instabilities
    The possibility that radiative instabilities in stellar atmospheres are driven by transfer of energy processes between stellar gas and the radiation field is...
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    NLTE analysis of high-resolution spectra of CSPN
    Preliminary results of new high-resolution and S/N ratio spectra of central stars of planetary nebulae (CSPN) are presented. The atmospheric parameters (Teff...
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    Observation of a variable, ZZ Ceti white dwarf: GD154
    The ZZ Ceti stars form a class of variable white dwarfs: the hydrogen dominated atmosphere ones, which do pulsate in an instability strip in the effective...
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    On the application of iteration factors for temperature correction in stellar atmospheres
    The authors present an improved iterative method for deriving temperature corrections in stellar atmospheres. At each step of iteration, the procedure computes...
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    On the relation of the Duvall phase function to the upper layers on the convection zone
    A method to obtain the Duvall phase function from the structure of a stellar model is presented. This can be a good tool for understanding the dependence of p...
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    Oxygen and magnesium abundance in the ultra-metal-poor giants CS 22949-037 and CS 29498-043: Challenges in models of atmospheres
    We report the results of a non-LTE Fe, O and Mg abundance analysis of the carbon-nitrogen-rich ultra-metal-poor giants CS 29498-043 and CS 22949-037. The...
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    PHL 932 - Another non-post-AGB central star of planetary nebula
    The very high surface gravity and low temperature of PHL 932, a hot subluminous star surrounded by a planetary nebula, imply that it cannot be a post-AGB star...
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    Progress in stellar spectral line formation theory; Proceedings of the Advanced Research Workshop, Trieste, Italy, September 4-7, 1984
    Papers on stellar spectral line formation theory are presented. The general topics considered include: frequency redistribution problems in line formation...
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    Self-consistent models for Coulomb heated X-ray pulsar atmospheres
    Calculations of accreting magnetized neutron star atmospheres heated by the gradual deceleration of protons via Coulomb collisions are presented. Self...