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Red Giants as Precursors of Planetary Nebulae

Published online by Cambridge University Press:  18 September 2017

Alvio Renzini*
Affiliation:
Dipartimento di Astronomia, CP 596, 40100 Bologna, Italy

Abstract

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Several physical processes taking place during the red (super)giant phase of intermediate-mass stars have direct observational consequences for the subsequent nebular stage. These processes include: the regular wind and the envelope ejection, the thermal pulses during the AGB phase, the dredge-up processes, and the dust formation in expanding circumstellar envelopes. In this paper it is briefly discussed how such processes affect the mass range of PN nuclei and their evolution, and the PN lifetime, composition and dust content. The last section is devoted to a cursory discussion of PNe which can be generated by binary stars.

Type
Section IV: Origin of Planetary Nebulae
Copyright
Copyright © Reidel 1983 

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