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Out-of-Eclipse Light Variation of RS CVn Stars

Published online by Cambridge University Press:  14 August 2015

S. Catalano ,
A. Frisina  and
M. Rodonò
S. Catalano
Affiliation:
+Istituto di Astronomia, Università di Catania
A. Frisina
Affiliation:
+Istituto di Astronomia, Università di Catania
M. Rodonò
Affiliation:
++Osservatoria Astrofisico, 95125 Catania, Italia

Abstract

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The photoelectric observations of the close binary RS CVn carried out at Catania Observatory from 1963 to 1973 are presented. A new period of 9.48 years for the retrograde migration of the wave-like distortion on the light-curve has been determined. The wave amplitude is found to undergo cyclic changes with a period of about 4.74 years.

Possible correlation between the wave amplitude and the inclination of the rotational axis and the spectral type of the spotted component for several RS CVn and BY Dra binaries is investigated.

Type
VII. The RS Canum Venaticorum Stars
Information
Symposium - International Astronomical Union , Volume 88: Close Binary Stars: Observations and Interpretation , 1980 , pp. 405 - 412
Copyright
Copyright © Reidel 1980 

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