Photometric study of the pulsating, eclipsing binary OO Dra

Abstract

We present a comprehensive photometric study of the pulsating, eclipsing binary OO Dra. Simultaneous B- and V-band photometry of the star was carried out on 14 nights. Revised orbital period and a new ephemeris were derived from the data. The first photometric solution of the binary system and the physical parameters of the component stars are determined. It reveals that OO Dra could be a detached system with the less-massive secondary component nearly filling in its Roche lobe. By subtracting the eclipsing light changes from the data, we obtained the intrinsic pulsating light curves of the hotter and massive primary component. Frequency analysis of the residuals light yields two confident pulsation modes in both B- and V-band data with the dominant frequency detected at 41.865 c/d. A brief discussion concerning the evolutionary status and the pulsation nature of the binary system is finally given.

19 Pages, 4 figures

References in corpus (2)

• Kepler photometry of KIC 10661783: a binary star with total eclipses and delta Scuti pulsations
• Survey for δ Sct components in eclipsing binaries and new correlations between pulsation frequency and fundamental stellar characteristics

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• KIC 6220497: A New Algol-type Eclipsing Binary with Multiperiodic Pulsations
• Optical Observing Conditions at Delingha Station
• Asteroseismology of two Kepler detached eclipsing binaries
• OO Dra: an Algol-type binary formed through an extremely helium-poor mass accretion revealed by asteroseismology