Differential rotation and activity cycles in RS CVn binaries. II - Model results for short and intermediate period members

Details Differential rotation and activity cycles in RS CVn binaries. II - Model results for short and intermediate period members Differential rotation and activity cycles in RS CVn binaries. II - Model results for short and intermediate period members

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...148...29b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 148, no. 1, July 1985, p. 29-34.

Astronomy and Astrophysics

Astrophysics

25

Binary Stars, Light Curve, Starspots, Stellar Activity, Stellar Orbits, Stellar Rotation, Variable Stars, Angular Velocity, Curve Fitting, Late Stars, Stellar Models

Scientific paper

Three active binaries of the RS CVn class with short period (SV Cam) and intermediate period (VV Mon and SS Boo) are studied by applying the statistical procedure of Busso and Scaltriti (1983) and the analytical method of Busso et al. (1984; Paper I) to a collection of photometric light curves extending for some years. The behaviour of the wave distortion for the studied systems can be reproduced fairly well by the model and allows to determine relevant parameters, such as the angular velocity at the equator, the rate of differential rotation, the rate of latitude shear of spots and the latitude of spots at formation. Though based on a small sample of objects, the results seem to indicate that short-period and intermediate-period binaries can behave quite similarly for what concerns spot cycles.

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