A New Driving Mechanism for Stellar Pulsations
Abstract
A new driving mechanism termed "convective blocking", a variation of the normal κ- and γ-mechanisms in Cepheids, is demonstrated using two models of hydrogen white dwarf stars. This mechanism is shown to be physically reasonable in the limit of frozen convection (implying the time scale for convective readjustment is long compared to a pulsation period). Some qualitative effects are given for when the two time scales are not as disparate.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- March 1987
- DOI:
- 10.1086/165089
- Bibcode:
- 1987ApJ...314..598P
- Keywords:
-
- Stellar Interiors;
- Stellar Oscillations;
- White Dwarf Stars;
- Stellar Models;
- Stellar Structure;
- Astrophysics;
- STARS: INTERIORS;
- STARS: PULSATION;
- STARS: WHITE DWARFS