Orbital Period Study of the RS CVn-Type Binary WW Draconis

Details Orbital Period Study of the RS CVn-Type Binary WW Draconis Orbital Period Study of the RS CVn-Type Binary WW Draconis

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010pasj...62..515t&link_type=abstract

Publications of the Astronomical Society of Japan, Vol.62, No.3, pp.515--519

Astronomy and Astrophysics

Astronomy

Binaries: Eclipsing, Stars: Individual (Ww Draconis), Stars: Magnetic Activity, Stars: Variables: Period

Scientific paper

The orbital period variation of the RS CVn-type binary system WW Dra was studied based on all available times of light minima. We confirmed that the orbital period of the binary shows a cyclical change with a large amplitude of 0.2495 days. We discussed in detail the mechanisms that could explain the period change of the system, especially the light-travel time orbit of a tertiary component or magnetic activity cycle. Of these two mechanisms, we find that the latter is more plausible.

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