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Vertical and horizontal abundance structures of the roAp star HD 24712

Published online by Cambridge University Press:  02 March 2005

T. Lüftinger ,
O. Kochukhov ,
T. Ryabchikova ,
I. Ilyin  and
W. W. Weiss
T. Lüftinger
Affiliation:
Department of Astronomy, Vienna University, Tuerkenschanzstrasse 17, A-1180 Vienna, Austria, email: [email protected]
O. Kochukhov
Affiliation:
Department of Astronomy, Vienna University, Tuerkenschanzstrasse 17, A-1180 Vienna, Austria, email: [email protected]
T. Ryabchikova
Affiliation:
Department of Astronomy, Vienna University, Tuerkenschanzstrasse 17, A-1180 Vienna, Austria, email: [email protected] Institute for Astronomy, Russian Academy of Sciences, Pyatnitskaya 48, 109017 Moscow, Russia, email: [email protected]
I. Ilyin
Affiliation:
Astrophysical Institute Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany email: [email protected]
W. W. Weiss
Affiliation:
Department of Astronomy, Vienna University, Tuerkenschanzstrasse 17, A-1180 Vienna, Austria, email: [email protected]
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Abstract

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High-resolution spectroscopic and spectropolarimetric data of the rapidly oscillating Ap star HD 24712 (HR 1217, DO Eri) has been analysed including modelling the vertical elemental abundance structures. We study the interaction and the relation of the vertical (stratification) and the horizontal (spots) abundance characteristics of Fe and the stellar magnetic field. By this synopsis and the relation of our results to the analysis of high resolution and high time resolved observations (Sachkov et al. 2005) we are likely to gain new insights about the atmospheric structure and the geometry, the origin, and the evolution of the magnetic fields of roAp stars.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Keywords

Stars: abundancesstars: stratificationstars: imagingstars: individual: (HD 24712)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS224 , July 2004 , pp. 253 - 258
Copyright
© 2004 International Astronomical Union