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Progenitor models of Wolf-Rayet binaries: short-period WNE+O binaries with mass ratios q ≃ 0.5

Published online by Cambridge University Press:  26 May 2016

Jelena Petrovic  and
Norbert Langer
Jelena Petrovic
Affiliation:
Sterrekundig Instituut, Universiteit Utrecht, Princetonplein 5, NL-3584 CC Utrecht, Nederland
Norbert Langer
Affiliation:
Sterrekundig Instituut, Universiteit Utrecht, Princetonplein 5, NL-3584 CC Utrecht, Nederland

Abstract

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We identify two possible paths for the progenitor evolution of observed WNE+O binaries with WNE/O mass ratios close to 0.5 and periods between 7 and 10 d. We show, through detailed binary evolution models, that with the assumption that the O-type star expels most of the matter flowing at it during mass transfer, one possibility to obtain the observed systems is through Case A mass transfer. We find a second solution using standard common envelope evolution. We conclude that in either case the O-type star in the three investigated systems did not accrete significant amounts of mass. We discuss the intricate situation that in other cases massive close binaries may evolve conservatively.

Type
Part 2. Interiors of Massive Stars
Information
Symposium - International Astronomical Union , Volume 212: A Massive Star Odyssey: From Main Sequence to Supernova , 2003 , pp. 418 - 420
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

Braun, H. 1997, , .Google Scholar
van der Hucht, K.A. 2001, New Astron. Reviews 45, 135.Google Scholar
de Kool, M. 1990, ApJ 358, 189.CrossRefGoogle Scholar
Wellstein, S., Langer, N., Braun, H. 2001, A&A 369, 939.Google Scholar
Wellstein, S., Langer, N. 1999, A&A 350, 148.Google Scholar
Wellstein, S. 2001, , .Google Scholar