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Activity of Relatively Close Binaries

Published online by Cambridge University Press:  12 April 2016

Carolus J. Schrijver  and
Cornelis Zwaan
Carolus J. Schrijver
Affiliation:
Space Science Department of ESA, ESTEC, Mail Box 299, 2200 AG Noordwijk, The Netherlands
Cornelis Zwaan
Affiliation:
Astronomical Institute, University of Utrecht, Mail Box 80 000, 3508 TA Utrecht, The Netherlands

Abstract

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Whereas the rotation-activity relationship for single cool stars can be described in terms of fundamental stellar properties, the activity in relatively close binaries is enhanced with respect to that of single stars by an amount which depends strongly on the properties of the companion. We consider mechanisms which could cause an excess in activity of binaries, and conclude that it is likely that the presence of a companion affects the interior structure of the stars in such a way that either the efficiency of the dynamo or of the atmospheric heating is enhanced.

Type
Part IV Stellar activity
Information
International Astronomical Union Colloquium , Volume 130: The Sun and Cool Stars: activity, magnetism, dynamos , 1991 , pp. 435 - 439
Copyright
Copyright © Springer-Verlag 1991

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