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The Evolution of Massive Close Binaries with Mass Loss and Overshooting. An Application to V729 Cyg (=BD+40 4220)

Published online by Cambridge University Press:  04 August 2017

Christiaan H. B. Sybesma
Christiaan H. B. Sybesma*
Affiliation:
Astrophysical Institute Vrije Universiteit Brussel Pleinlaan 2, B-1050 Brussels

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The evolution of massive close binaries is altered if the effects of mass loss through a stellar wind and overshooting from the convective core are taken into account. The occurrence of mass transfer as well as the extent of the mass transfer itself differs from the classical case (Doom and De Greve 1983, Doom 1984). The main-sequence widening due to the enlargement of the convective core results in an enhancement of the frequency of case A of mass transfer. It occurs for initial periods much longer than in the classical case. A cosiderable number of early-type systems will therefore undergo this type of mass transfer (Sybesma, 1985b). Systems with primary masses larger than 35 M will most likely not undergo mass transfer at all as these stars do not form red supergiants if overshooting is coupled to the effects of mass loss through stellar wind. These systems will only be able to undergo case A of mass transfer, and then only for initial periods below 2–3 days.

Type
Poster Papers 3
Information
Symposium - International Astronomical Union , Volume 116: Luminous Stars and Associations in Galaxies , 1986 , pp. 399 - 400
Copyright
Copyright © Reidel 1986 

References

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