Orbital circularization in early-type detached close binaries

Details Orbital circularization in early-type detached close binaries Orbital circularization in early-type detached close binaries

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...134..365g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 134, no. 2, May 1984, p. 365-367.

Astronomy and Astrophysics

Astrophysics

49

Circular Orbits, Early Stars, Eccentric Orbits, Eclipsing Binary Stars, Orbital Elements, A Stars, B Stars, O Stars, Stellar Evolution

Scientific paper

The population of the e (orbital eccentricity) - Log P (orbital period) and e-r (r = primary fractional radius) planes are discussed for a sample of about 200 early-type (eclipsing and double-lined spectroscopic) close binaries, which are probably in a prior-to-mass exchange stage of evolution. The observed degree of orbital circularization (e less than about 0.05 is practically the rule for P less than about 2 days and r greater than about 0.25) appears to be substantially compatible with Zahn's (1977) current theory of circularization by tidal friction.

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