A study of the distortion wave in the RS CVn eclipsing binary SV Camelopardalis

Details A study of the distortion wave in the RS CVn eclipsing binary SV Camelopardalis A study of the distortion wave in the RS CVn eclipsing binary SV Camelopardalis

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991japa...12...49s&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 12, March 1991, p. 49-67. ISRO-supported research.

Astronomy and Astrophysics

Astrophysics

6

Distortion, Eclipsing Binary Stars, Starspots, Astronomical Models, Fourier Analysis, Light Curve, Stellar Flares, Stellar Rotation

Scientific paper

A Fourier analysis is carried out and the amplitudes of the distortion waves are determined for the light found around the totally eclipsing RS CVn binary SV Cam. The distortion waves are modelled in the manner of Budding (1977) to characterize spot parameters such as longitude, latitude, temperature, and size. The source of the distortion waves is shown to be the hotter binary component. The parameters obtained show that symmetric waves with two minima can be fitted, but asymmetric waves with more than two minima cannot be fitted satisfactorily. The migration periods of four spot groups, found with the longitudes of the minima of the best fitted curves, are employed to deduce the rotation periods of the four spot groups. A rotation period of 0.5934209 day is found for a spot group having direct motion, and the periods of the three groups which have retrograde motion are given. The latitude of the spot which has a rotation period equal to the orbital period is found to be approximately 30 percent.

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