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Models for Contact Binaries

Published online by Cambridge University Press:  12 April 2016

Peter Biermann  and
H.-C. Thomas
Peter Biermann
Affiliation:
Göttingen, München
H.-C. Thomas
Affiliation:
Göttingen, München

Extract

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The well-known problem one has in constructing zero age contact binaries stems from the fact that given two mass values, the ratio of the radii for zero age stellar models differs from that derived from the Roche model (KUIPER 1941). Therefore one cannot achieve contact by adjusting just the distance of the two stars, since if for instance the distance would be such that the critical equipotential surface is of the right volume for the primary to fill it completely, then the secondary would be smaller than its critical equipotential surface and one would end up with a semidetached system.

Type
IV. Duplicity and its Consequences among the Intrinsic Variable Stars
Information
International Astronomical Union Colloquium , Volume 15: New Directions and Frontiers in Variable Stars Research , 1971 , pp. 285 - 288
Copyright
Copyright © Cambridge University Press 1971

References

Eggen, O. J., 1967, Mem. R.A.S. 70, 111.Google Scholar
Lucy, L. B., 1967, Z. f. Astrophys. 65, 89.Google Scholar
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Mauder, H., 1971, submitted to Astron. & Astrophys. Google Scholar
Moss, D. L., Whelan, J.A.J., 1970, M.N.R.A.S. 149, 147.Google Scholar