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Do Temperature Variations at the Surface of a Hot Non-Radial Pulsator Change Significantly the Line-Profile Variations?

Published online by Cambridge University Press:  12 April 2016

J. De Ridder ,
C. Aerts ,
M.-A. Dupret  and
C. Neuforge
J. De Ridder
Affiliation:
Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Belgium
C. Aerts
Affiliation:
Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Belgium
M.-A. Dupret
Affiliation:
Institut d’Astrophysique et de Géophysique, Université de Liège, Belgium
C. Neuforge
Affiliation:
Institut d’Astrophysique et de Géophysique, Université de Liège, Belgium

Abstract

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We present simulations of line-profile variations of Silicon lines in slowly-rotating non-radially pulsating β Cephei stars and SPB stars. Our goal is to examine how sensitive Si lines are to the non-adiabatic temperature variations at the surface of the star. We find that for realistic amplitudes of the velocity field, and for realistic amplitudes and phase differences for the non-adiabatic temperature and gravity variations, the Silicon lines variations are very little affected.

Type
Part 2.2. B-Type Stars
Information
International Astronomical Union Colloquium , Volume 185: Radial and Nonradial Pulsations as Probes of Stellar Physics , 2002 , pp. 218 - 220
Copyright
Copyright © Astronomical Society of the Pacific 2002

References

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