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The lifetime of contact binaries

Published online by Cambridge University Press:  21 February 2013

D. K. Jiang ,
Z. W. Han ,
L. H. Yang  and
L. F. Li
D. K. Jiang
Affiliation:
National Astronomical Observatories, Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming. e-mail: dengkai@ynao.ac.cn Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences
Z. W. Han
Affiliation:
National Astronomical Observatories, Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming. e-mail: dengkai@ynao.ac.cn Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences
L. H. Yang
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
L. F. Li
Affiliation:
National Astronomical Observatories, Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming. e-mail: dengkai@ynao.ac.cn Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences
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Abstract

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The lifetime of contact binaries is an important parameter for studying the evolution of contact binaries. By reproducing the relative frequency of occurrence for contact binaries, we found that the lifetime of contact binaries decreases with increasing mass of the primaries. The lifetime of contact binaries is about 4%–10% of the main sequence lifetime of the primaries, and is about 0.006–0.65 Gyr. This suggests that the lifetime of contact binaries strongly depends on the mass of the primaries.

Keywords

Binaries: closebinaries: eclipsingstars: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S290: Feeding Compact Objects: Accretion on All Scales , August 2012 , pp. 229 - 230
Copyright
Copyright © International Astronomical Union 2013

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