Issue |
A&A
Volume 385, Number 2, April II 2002
|
|
---|---|---|
Page(s) | 563 - 571 | |
Section | Interstellar and circumstellar matter | |
DOI | https://doi.org/10.1051/0004-6361:20020193 | |
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
1
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, dupret@astro.ulg.ac.be
Received:
2
August
2001
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
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.