Stability ofG + modes in a 30M ⊙ star
Abstract
The evolution of a Population I 30M ⊙ star has been computed during the Main Sequence phases without taking semi-convection into account. These models have a temperature gradient larger than the adiabatic value in the inhomogeneous region. The models have been tested for stability towardsg + modes of non-radial oscillations to see whether Kato's mechanism leads to an instability. Whereas the models are stable during the early Main Sequence phases, they become unstable for low enough central hydrogen abundance.
- Publication:
-
Astrophysics and Space Science
- Pub Date:
- February 1976
- DOI:
- 10.1007/BF00648344
- Bibcode:
- 1976Ap&SS..39..463S
- Keywords:
-
- Dynamic Stability;
- Main Sequence Stars;
- Stellar Structure;
- Vibration Mode;
- Adiabatic Conditions;
- Asymptotic Methods;
- Hydrogen;
- Nuclear Fusion;
- Stellar Models;
- Astrophysics