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Mass loss on the Asymptotic Giant Branch

Published online by Cambridge University Press:  15 December 2006

Albert A. Zijlstra
Albert A. Zijlstra
Affiliation:
Jodrell Bank Centre for Astrophysics, School of Physics & Astronomy, University of Manchester, P.O. Box 88, Manchester M60 1QD email: [email protected]
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Abstract

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Mass loss on the Asymptotic Giant Branch provides the origin of planetary nebulae. This paper reviews several relevant aspects of AGB evolution: pulsation properties, mass loss formalisms and time variable mass loss, evidence for asymmetries on the AGB, binarity, ISM interaction, and mass loss at low metallicity. There is growing evidence that mass loss on the AGB is already asymmetric, but with spherically symmetric velocity fields. The origin of the rings may be in pulsational instabilities causing mass-loss variations on time scales of centuries.

Keywords

stars: AGB and post-AGBstars: evolutionstars: mass loss
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S234: Planetary Nebulae in our Galaxy and Beyond , April 2006 , pp. 55 - 62
Copyright
© 2006 International Astronomical Union