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Observed Orbital Eccentricities

Published online by Cambridge University Press:  12 July 2007

Helmut A. Abt
Helmut A. Abt*
Affiliation:
Kitt Peak National Observatory, Box 26732, Tucson, AZ 85726-6732, USA email: abt@noao.edu
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Abstract

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The eccentricities of catalogued binaries show that tidal interactions extend to periods of at least 1000 days. The maximum periods for complete circularization probably depend on age, rather than mass. For the longest periods all eccentricities are equally probable. For shorter periods the highest eccentricities disappear first. For the same periods, the SB2's have larger mean eccentricities than the SB1's, in accord with Keplers Third Law.

Keywords

binaries: spectroscopicbinaries: visualstellar: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S240: Binary Stars as Critical Tools & Tests in Contemporary Astrophysics , August 2006 , pp. 414 - 416
Copyright
Copyright © International Astronomical Union 2007

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