Volume 385, Number 2, April II 2002
|Page(s)||563 - 571|
|Section||Interstellar and circumstellar matter|
|Published online||15 April 2002|
Influence of non-adiabatic temperature variations on line profile variations of slowly rotating β Cep stars and SPBs
I. Non-adiabatic eigenfunctions in the atmosphere of a pulsating star
Institut d'Astrophysique et de Géophysique de l'Université de Liège, avenue de Cointe 5, 4000 Liège, Belgium
2 Institut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200 B, 3001 Heverlee, Belgium
Corresponding author: M.-A. Dupret, firstname.lastname@example.org
Accepted: 31 January 2002
In this study, we compute theoretical line profiles of a non-radially pulsating star, taking the non-adiabatic effects into account. These non-adiabatic effects are especially important in the atmosphere, where the spectral lines are formed, and must be accounted for. In this first paper of the series, we present a new treatment of the perturbed thermal and dynamical equations in the atmosphere of a pulsating star. We apply our formalism to the computation of non-adiabatic eigenfunctions in a typical β Cephei star with low order p-modes and in a typical slowly pulsating B star with high-order g-modes.
Key words: stars: oscillations / stars: atmospheres / Line: profiles / stars: variables: β Cep / stars: variables: slowly fulsating B stars
© ESO, 2002
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