The first photometric investigation of the contact binary OQ Cam

Abstract

The first charge-coupled device photometric light curves in B, V, R${}_c$, and I${}_c$ bands of the short-period contact binary star OQ Cam are presented. Through analyzing the light curves with the Wilson-Devinney code, it is found that OQ Cam is a W-type shallow contact binary star with a contact degree of f =20.2%. Based on the O-C analyzing, the orbit period displays a long term increasing with a rate of $dP/dt=4.40\times 10{}^{-7}day\cdot year{}^{-1}$. The increasing in orbit period can be interpreted by mass transfer from the less massive component to the more massive one. As the orbit period increasing, OQ Cam would evolve from the present shallow contact configuration to a none contact stage. So it may be a potential candidate to confirm the thermal relaxation oscillation theory.

11 pages, 6 figures, and 5 tables, accepted by RAA

References in corpus (9)

• The Gaia mission
• The first WASP public data release
• Physical Properties and Catalogue of EW-type Eclipsing Binaries Observed by LAMOST
• Dynamical evolution of active detached binaries on log Jo - log M diagram and contact binary formation
• Masses and angular momenta of contact binary stars
• A new mechanism of long-term period variations for W UMa-type contact binaries
• Photometric and period investigation of the late F-type overcontact binary II UMa
• Photometric investigation and orbital period analyses of the W UMa binaries FP Lyn, FV CVn and V354 UMa
• Multi-color photometric investigation of the totally eclipsing binary NO Cam

Cited by in corpus (1)

• Investigation of the Orbital Period and Mass Relations for W UMa-type Contact Systems