Non-radial pulsations and stability of massive stars
Abstract
A non-radial non-adiabatic linear stability analysis of stellar models with initial masses on the zero-age main sequence (ZAMS) between 20 and 80 M_solar is presented. Two groups of dynamical mode-coupling instabilities are identified. We examine the influence of the treatment of convection on these instabilities, as well as their dependence on the stellar mass and the harmonic degree l of the perturbation. The instabilities are discussed within the context of a recently proposed model for strange-mode instabilities.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- October 1996
- DOI:
- 10.1093/mnras/282.4.1470
- Bibcode:
- 1996MNRAS.282.1470G
- Keywords:
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- INSTABILITIES;
- STARS: OSCILLATIONS;
- STARS: VARIABLES: OTHER