Chapter

Activity of relatively close binaries

01/2006; DOI:10.1007/3-540-53955-7_174 pp.435-439

ABSTRACT 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.

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Keywords

atmospheric heating
 
dynamo
 
fundamental stellar properties
 
rotation-activity relationship
 
single cool stars
 
single stars
 
stars