Nonradial instability strips for post-AGB stars
Conference
·
OSTI ID:6712241
- Osservatorio Astronomico di Bologna (Italy)
- Los Alamos National Lab., NM (USA)
- Arizona State Univ., Tempe, AZ (USA). Dept. of Physics and Astronomy Los Alamos National Lab., NM (USA)
We test several pre-degenerate (PNN and DO) and degenerate (DB) models for stability against nonradial oscillations. These models lie on the 0.6 M{sub {circle dot}} evolutionary track calculated by Iben. The post-AGB stars have a residual CO core with only a little surface hydrogen and helium. In order to match all the observed pulsators. We use three different surface compositions for the DO stars, and a pure helium surface for the DB white dwarfs. We find 3 DO and 1 DB instability strips that we compare to the available observations. 16 refs., 1 fig.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- Sponsoring Organization:
- DOE/MA; NSF
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6712241
- Report Number(s):
- LA-UR-90-2366; CONF-9005249--2; ON: DE90014922; CNN: NSF 88-18215
- Country of Publication:
- United States
- Language:
- English
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