Theoretical clues for mode identification - Instability ranges and rotational splitting patterns

Autor(en)

Aleksiej Pamiatnych

Abstrakt

Frequency spectra of unstable modes for typical models of ß Cephei, SPB and d Scuti variables are presented. Comparison of theoretical and observed instability ranges allows to constrain possible parameters of the stellar models. As an example, models of ?2 Tau are considered. The main uncertainties in the determination of the theoretical frequency ranges for d Sct variables are due to unsatisfactory treatment of convection. The structure of rotationally split multiplets for the low-order modes excited in d Sct stars is discussed. The rotational coupling between close modes of spherical harmonic degree, l, differing by 2, can significantly disturb the frequency spectrum.

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

Polish Academy of Sciences (PAS), Russian Academy of Sciences

Journal

Astrophysics and Space Science

Band

284

Seiten

97-107

Anzahl der Seiten

11

ISSN

0004-640X

DOI

https://doi.org/10.1023/A:1023205224735

Publikationsdatum

2003

ÖFOS 2012

103003 Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/59d416de-ff06-4037-8248-2262b8be63e9