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Born-again AGB stars: Starting point of the H-deficient post-AGB evolutionary sequence?
Published online by Cambridge University Press: 25 May 2016
Abstract
We discuss the origin of hot hydrogen-deficient post-AGB stars. Evidence is growing that the “born-again AGB star scenario” as a consequence of a late He shell flash cannot explain the diverse observations. Analyses of the stars and their associated planetary nebulae suggest that the H-deficiency is not formed during the second post-AGB phase but already while the star is still on the AGB. There are even hints that the H-deficiency can occur before the first departure from the AGB.
- Type
- Part 5. Non-Spherical Mass Loss, Binarity, Post-AGB Evolution
- Information
- Symposium - International Astronomical Union , Volume 191: Asymptotic Giant Branch Stars , 1999 , pp. 493 - 498
- Copyright
- Copyright © Astronomical Society of the Pacific 1999
References
- 3
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