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The Role of Binaries in the Carbon Star Phenomenon

Published online by Cambridge University Press:  25 May 2016

Robert D. McClure*
Affiliation:
Dominion Astrophysical Observatory, Herzberg Institute of Astrophysics, National Research Council of Canada, Victoria, BC Canada

Abstract

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This presentation reviews the role that binaries play in the production of Barium, CH, and S stars. New radial velocity observations confirming the binary nature of subgiant CH stars are also discussed. Evidence is presented that the early R-type carbon stars exhibit no binaries. It is suggested that they were once all binaries, but having small separations, a coalescing companion has caused them to mix near the helium core flash.

Type
Session VI — Binarity
Copyright
Copyright © Kluwer 2000 

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