An analysis of the pulsational stability of very low mass stars on the hydrogen and deuterium main sequence.
Abstract
Summary. We have investigated the pulsational stability of the most recent theoretical models of stars in the mass range 0.085 M0 to 0.5 M0 on the hydrogen main sequence, and in the mass range 0.012 M0 so 0.5 M0 on the deuterium main sequence. We find all models to be unstable on the hydrogen main sequence. Pulsation periods range from 10 to 41 min on the hydrogen main sequence and from I to 20 hrs on the deuterium main sequence. The e-folding times range from 6.80 x 108 years to 5.07 x i0 years on the hydrogen main sequence and from 8.01 x 106 years to 2.54 x i0 years on the deuterium main sequence. Our calculations agree to within 10 of previously calculated periods and yield e-folding times 5 to 10 times greater than those previously calculated for low mass stars. Key words: low mass stars - main sequence - pulsational stability
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- December 1974
- Bibcode:
- 1974A&A....37..335O
- Keywords:
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- Astronomical Models;
- Dynamic Stability;
- Main Sequence Stars;
- Oscillations;
- Stellar Mass;
- Stellar Structure;
- Deuterium;
- Hydrogen;
- Nuclear Fusion;
- Radial Distribution;
- Astrophysics