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Periods of Unevolved Late-Type Close Binaries: Evidence of Magnetic Activity

Published online by Cambridge University Press:  12 April 2016

G. Giuricin ,
S. Catalano ,
F. Mardirossian  and
M. Mezzetti
G. Giuricin
Affiliation:
Astronomical Observatory of Trieste, Trieste, Italy
S. Catalano
Affiliation:
Astronomical Observatory of Trieste, Trieste, Italy
F. Mardirossian
Affiliation:
Astronomical Observatory of Trieste, Trieste, Italy
M. Mezzetti
Affiliation:
Astronomical Observatory of Trieste, Trieste, Italy

Abstract

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Our study of the period distribution of about 200 FGKM-type unevolved close binaries has revealed a strong deficit of short-period systems.This finding may be connected with the occurrence of a very efficient mechanism of orbital angular momentum loss via magnetic braking by stellar wind, in the earliest evolutionary phases.

Type
Session III: Observed Activity in Related Objects
Information
International Astronomical Union Colloquium , Volume 71: Activity in Red-Dwarf Stars , 1983 , pp. 391 - 392
Copyright
Copyright © Reidel 1983

References

REFERENCE

Popova, E.I., Tutukov, A.V., Shustov, B.M. and Yungelson, L.R., 1982, in “Binary Stars and Multiple Stars as Traces of Stellar Evolution”, IAU Colloquium No. 69 , Kopal, Z. and Rahe, J. eds. (Dordrecht:Reidel)Google Scholar