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Issue A&A
Volume 366, Number 1, January IV 2001
Page(s) 166 - 173
Section Formation, structure and evolution of stars
DOI http://dx.doi.org/10.1051/0004-6361:20000219



A&A 366, 166-173 (2001)
DOI: 10.1051/0004-6361:20000219

Nonradial nonadiabatic stellar pulsations: A numerical method and its application to a $\beta$ Cephei model

M. A. Dupret

Institut d'Astrophysique et de Géophysique de l'Université de Liège, avenue de Cointe 5, 4000 Liège, Belgium

(Received 25 February 2000 / Accepted 7 November 2000 )

Abstract
A new general method for the computation of nonradial nonadiabatic oscillations of a given stellar model is presented for a linear approximation. A simple and useful modelling of the atmosphere is included, allowing to obtain credible values for the eigenfunctions in the atmosphere. Some of the results obtained for a $10 M_{\odot}$ model are shown as an illustration. Our study opens the way to different applications. Better theoretical line-profile variations could be obtained from our method, allowing a more detailed comparison with observations. More generally, our study is relevant for asteroseismology, giving a way for a better knowledge of stellar interiors.


Key words: stars: interiors -- stars: oscillations

Offprint request: M. A. Dupret, dupret@astro.ulg.ac.be




© ESO 2001


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