On the stability of age-zero contact binaries. I

Details On the stability of age-zero contact binaries. I On the stability of age-zero contact binaries. I

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....84..200h&link_type=abstract

Astronomy and Astrophysics, vol. 84, no. 1-2, Apr. 1980, p. 200-211. Deutsche Forschungsgemeinschaft

Astronomy and Astrophysics

Astrophysics

21

Binary Stars, Main Sequence Stars, Stellar Evolution, Systems Stability, Energy Transfer, Secular Variations, Stellar Models

Scientific paper

A method is developed for investigating the secular stability of contact binaries and applied to a system of 1.0 solar mass and 0.6 solar mass. The system is found to be unstable with an e-folding time of about 30,000 yr. The possible influence on this result of the form of the equation describing the energy transport between the two stars is investigated. It is however found that the instability occurs in all cases. The relevance of this result for the theory of W UMa stars is discussed.

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