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High Mass Ratio Contact Binaries: Recent Evolution into Contact?

Published online by Cambridge University Press:  12 April 2016

Bruce J. Hrivnak
Bruce J. Hrivnak*
Affiliation:
Physics Department Valparaiso University Valparaiso,, Indiana 46383 U.S.A.

Extract

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Recent theories of the origin and evolution of contact binaries suggest that the two stars evolve into contact through angular momentum loss (AML; Mochnacki 1981, Vilhu 1982). When in contact, the system then evolves toward smaller mass ratio through mass transfer from the secondary to the primary component (Webbink 1976, Rahunen and Vilhu 1982). Most contact binaries have mass ratios of 0.3 to 0.5.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 107: Algols , 1989 , pp. 348 - 349
Copyright
Copyright © Kluwer 1989

References

Hrivnak, B.J, and Milone, E.F. 1989, A.J.. in press.Google Scholar
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Rahunen, T., and Vilhu, O. 1982, in Binary and Multiple Stars as Tracers of Stellar Evolution, ed. Kopal, Z. and Rahe, J. (Dordrecht: Reidel), p. 289.CrossRefGoogle Scholar
Vilhu, O. 1982, Astr. Ap., 109, 17.Google Scholar
Webbink, R.F. 1976, Ap. J., 209, 829.CrossRefGoogle Scholar