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The Evolution of Close Binaries and the Formation of the Wolf-Rayet Stars

Published online by Cambridge University Press:  30 March 2016

Bohdan Paczyński
Bohdan Paczyński*
Affiliation:
Institute of Astronomy, Polish Academy of Sciences, Warsaw, Poland

Extract

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I shall discuss here the evolution of massive binaries in the case B. In this case the initially more massive component fills up the Roche lobe after the exhaustion of hydrogen in the core. By a massive binary I understand the binary in which the phase of a rapid mass exchange is terminated by helium ignition in the core of the initially more massive star. The helium ignition stops the contraction of the core and the expansion of the envelope of that component. In a small mass star the degeneracy plays the role of helium ignition in this respect. The last case will be discussed by Dr. A. Weigert in his lecture.

Type
Joint Discussions
Information
Highlights of Astronomy , Volume 1: Highlights of Astronomy. As presented at the XIIIth General Assembly of the IAU, 1967 , 1968 , pp. 409 - 413
Copyright
Copyright © Reidel 1968

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