Nonradial pulsations of upsilon Orionis and supergiants
Abstract
The overshooting nonradial mode driving for a pulsating star very close to the main sequence (upsilon Orionis) and for the nonradial pulsations of an A supergiant not too unlike alpha Cygnus types are discussed. A 15 solar mass 30,000 K model of less than on million years was constructed for upsilion Orionis, and a 25 m, 10,000 k model was constructed for the supergiants. Overshooting from a convective core or a convective shell was found to be a likely cause of pulsations in near sequence B stars and in supergiants.
- Publication:
-
Pulsating B-Stars
- Pub Date:
- 1981
- Bibcode:
- 1981pbs..work..359C
- Keywords:
-
- B Stars;
- Orion Constellation;
- Stellar Atmospheres;
- Stellar Mass Ejection;
- Stellar Models;
- Stellar Oscillations;
- Supergiant Stars;
- Variable Stars;
- Eigenvectors;
- Hydrogen;
- Kinetic Energy;
- Stellar Evolution;
- Stellar Luminosity;
- Stellar Magnitude;
- Stellar Mass;
- Stellar Structure;
- Astronomy