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Advanced model atmospheres with magnetic field effects included

Published online by Cambridge University Press:  01 November 2008

Denis Shulyak ,
S. Khan  and
O. Kochukhov
Denis Shulyak
Affiliation:
Institute for Astronomy, Vienna University, Türkenschanzstrasse, 17, 1180 Vienna, Austria email: [email protected]
S. Khan
Affiliation:
Institute for Computational Astrophysics, Saint Mary's University, 923 Robie Street, Halifax, B3H 3C3, Nova Scotia, Canada email: [email protected]
O. Kochukhov
Affiliation:
Department of Astronomy and Space Physics, Uppsala University, Box 515, 751 20, Uppsala, Sweden email: [email protected]
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Abstract

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The atmospheres of magnetic chemically peculiar (mCP) stars display the presence of magnetic fields of different geometry and strength, ranging from a few hundred G up to tens of kG. Except several very approximate attempts there were no detailed studies of magnetic field effects on model atmospheres structure, possibly leading to errors in the stellar parameter determination and abundance analysis routines. We present the magnetic model atmospheres based on LLmodels code which accounts for the detailed treatment of anomalous Zeeman splitting and polarized radiative transfer.

Keywords

Stars: atmospheres – stars: magnetic fields – stars: chemically peculiar
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S259: Cosmic Magnetic Fields: From Planets, to Stars and Galaxies , November 2008 , pp. 407 - 408
Copyright
Copyright © International Astronomical Union 2009

References

Khan, S. & Shulyak, D. 2006b, A&A 454, 933Google Scholar
Khan, S. & Shulyak, D. 2006a, A&A 448, 1153Google Scholar
Kochukhov, O. 2006, A&A 454, 321Google Scholar
Kochukhov, O., Khan, S., & Shulyak, D. 2005, A&A 433, 671Google Scholar
Shulyak, D., Kochukhov, O., & Khan, S. 2008, A&A 487, 689Google Scholar
Shulyak, D., Tsymbal, V., Ryabchikova, T., Stütz, Ch., & Weiss, W. W. 2004, A&A 428, 993Google Scholar