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Advanced test of the model stellar atmospheres: the nature of the light variability of magnetic chemically peculiar stars

Published online by Cambridge University Press:  01 April 2008

J. Krtička ,
Z. Mikulášek ,
J. Zverko ,
J. Žižňovský  and
P. Zvěřina
J. Krtička
Affiliation:
Institute of Theoretical Physics and Astrophysics, Masaryk University, Brno, Czech Republic
Z. Mikulášek
Affiliation:
Institute of Theoretical Physics and Astrophysics, Masaryk University, Brno, Czech Republic
J. Zverko
Affiliation:
Astronomical Institute of the Slovak Academy of Sciences, Tatranská Lomnica, Slovak Republic
J. Žižňovský
Affiliation:
Astronomical Institute of the Slovak Academy of Sciences, Tatranská Lomnica, Slovak Republic
P. Zvěřina
Affiliation:
Institute of Theoretical Physics and Astrophysics, Masaryk University, Brno, Czech Republic
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Abstract

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The magnetic chemically peculiar stars exhibit both inhomogeneous horizontal distribution of chemical elements on their surfaces and the light variability. We show that the observed light variability of these stars can be successfully simulated using models of their stellar atmospheres and adopting the observed surface distribution of elements. The most important elements that influence the light variability are silicon, iron, and helium.

Keywords

stars: chemically peculiarstars: early-typestars: variables: otherstars: atmospheresstars: magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S252: The Art of Modeling Stars in the 21st Century , April 2008 , pp. 347 - 348
Copyright
Copyright © International Astronomical Union 2008

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