VZ CVn: a close binary system with γ Doradus-like variations

Details VZ CVn: a close binary system with γ Doradus-like variations VZ CVn: a close binary system with γ Doradus-like variations

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007mnras.376..573i&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 376, Issue 2, pp. 573-579.

Astronomy and Astrophysics

Astronomy

7

Binaries: Eclipsing, Stars: Individual: Vz Cvn, Stars: Oscillations

Scientific paper

We present new photometric two-colour observations of the double-lined close binary star VZ CVn. Combining two data sets obtained in 1971-72 and in 2006, the physical parameters of both components were derived. After removing the light variations due to the eclipses and proximity effects, a periodic variation in the more massive component with a dominant period of 1.06876 d could be detected in the first photometric data set. In accordance with its position on the Hertzsprung-Russell diagram and both its pulsation period and pulsation constant of 0.62 d, the primary component of VZ CVn should be an excellent γ Doradus candidate. The less massive secondary component seems to have smaller radius with respect to its mass. Both components appear to have lower luminosities with respect to their masses; hence, their radiative properties seem to be different. The evolutionary status of the components is also discussed.

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