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Post-AGB Variables and Stellar Mass-Loss

Published online by Cambridge University Press:  25 May 2016

M. W. Feast
M. W. Feast*
Affiliation:
Astronomy Department, University of Cape Town, South Africa

Abstract

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A brief review is given of the various types of star which are thought to be in the immediate post-AGB stage of evolution. The paper then concentrates on the properties of the RCB stars and particularly on the mass-loss process in these stars. It is suggested that grain formation takes place over the cool regions of giant convection cells in a super-Eddington outflow and in the form of small clouds or puffs. Attention is drawn to observations which suggest that grain formation in the outer atmospheres of Miras and other cool giants may also take place in puffs rather than in spherical shells. Evidence on the long-term variation of the circumstellar dust emission from RCB stars is summarized.

Type
Session V — Post-AGB Stars
Information
Symposium - International Astronomical Union , Volume 177: The Carbon Star Phenomenon , 2000 , pp. 207 - 216
Copyright
Copyright © Kluwer 2000 

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