Instability in massive stars - an overview
Abstract
Dynamical, vibrational, and thermal instabilities of massive blue stars are discussed as possible mechanisms for the observed brightness variations of such objects. Relaxation oscillations (on local thermal time scales) due to dynamical instabilities of the stellar wind flows appear to be the most likely mechanism, at least for the S Dor variables. Very massive main-sequence stars with M larger than 1000 solar masses should be violently vibrationally unstable and therefore should differ significantly from stable main-sequence stars of lower mass.
- Publication:
-
Luminous Stars and Associations in Galaxies
- Pub Date:
- 1986
- Bibcode:
- 1986IAUS..116..139A
- Keywords:
-
- Blue Stars;
- Brightness Distribution;
- Dynamic Stability;
- Stellar Mass;
- Stellar Winds;
- Hydrostatics;
- Relativistic Effects;
- Stellar Mass Ejection;
- Thermal Stability;
- Astrophysics