Period Change and Possible Magnetic Braking in WY Cancri

Details Period Change and Possible Magnetic Braking in WY Cancri Period Change and Possible Magnetic Braking in WY Cancri

Aug 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009pasj...61..675t&link_type=abstract

Publications of the Astronomical Society of Japan, Vol.61, No.4, pp.675--677

Astronomy and Astrophysics

Astronomy

Binaries: Close, Binaries: Eclipsing, Stars: Individual (Wy Cancri), Stars: Mass-Loss, Stars: Period

Scientific paper

In this paper, the orbital period change of the RS CVn-type binary system WY Cnc is analyzed through a detailed description of the O - C curve by a weighted least-squares method. It is found that the period variation is suffering a secular period decrease at a rate of dp/dt = -1.20 × 10-7 dy-1. Since WY Cnc is a typical detached binary system, and both components are late-type stars, the long-term period decrease may be caused by angular momentum loss via magnetic braking.

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