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Active Longitudes and Flip-Flops in Binary Stars

Published online by Cambridge University Press:  12 July 2007

Heidi Korhonen  and
Silva P. Järvinen
Heidi Korhonen
Affiliation:
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany
Silva P. Järvinen
Affiliation:
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany Astronomy Division, P.O.Box 3000, FI-90014 University of Oulu, Finland
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Abstract

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We present results from an investigation where the long-term photometry of several magnetically active RS CVn binaries is studied to see whether or not they show permanent active longitudes and the flip-flop phenomenon. We confirm that it is very common for the active regions to occur on permanent active longitudes. Many of our target stars also show clear flip-flop phenomenon, but often the data set is not long enough for reliable determination of the flip-flop period.

Keywords

stars: activitystars: late-typestars: spots

References

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