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Massive Star Evolution: Mass Loss and Mixing

Published online by Cambridge University Press:  04 August 2017

André Maeder
André Maeder*
Affiliation:
Geneva Observatory, 1290 Sauverny / Switzerland

Extract

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At first it may be surprising that mass loss, overshooting and mixing, which are indeed very different physical processes, have similar consequences on stellar evolution. These various processes may increase the Main-Sequence (MS) lifetime, extend the width of the MS, bring CNO-processed materials to stellar surfaces and, in extreme cases, lead to quasi-homogeneous evolution. The physical reason of this similarity is that these processes increase the relative mass fraction of the stellar cores. Thus we understand that, on the basis of their evolutionary consequences, it may not be easy to disentangle the contributions of mass loss, overshooting and mixing processes. The present status of our knowledge on these effects, which appear to have major consequences on the evolution of massive stars, is now examined in detail.

Type
Session 5. Massive Star Evolution
Information
Symposium - International Astronomical Union , Volume 116: Luminous Stars and Associations in Galaxies , 1986 , pp. 287 - 300
Copyright
Copyright © Reidel 1986 

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