New generation model atmospheres for chemically peculiar stars

Autor(en)

Oleg Kochukhov, Denis Victorovich Shulyak

Abstrakt

The atmospheric structure of chemically peculiar stars deviates from that of normal stars with similar fundamental parameters due to unusual chemistry, abundance inhomogeneities and the presence of strong magnetic field. These effects are not considered in the standard model atmospheres, possibly leading to large errors in stellar parameter determination and abundance analysis. To resolve this problem we used the state-of-the-art opacity sampling model atmosphere code LLmodels to calculate a comprehensive grid of new generation model atmospheres for magnetic CP stars. This grid covers the whole parameter space occupied by SrCrEu and Si-peculiar stars, taking into account the characteristic temperature dependence of the chemical abundances. Here we present the first results of our model atmosphere calculations.

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

Uppsala University

Journal

Contributions of the Astronomical Observatory Skalnaté Pleso

Band

38

Seiten

419-420

Anzahl der Seiten

2

ISSN

1335-1842

Publikationsdatum

2008

ÖFOS 2012

103003 Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/43f2e685-9895-4118-b374-8ba118d4785f