Physical properties and evolutionary status of the W-subtype contact binary V502 Oph with a stellar companion

Xiao Zhou, Shengbang Qian, Binghe Huang +2

Multi-color ($B$ $V$ $R_c$ $I_c$) CCD photometric light curves of the contact binary V502 Oph are analyzed using the Wilson-Devinney (W-D) program. The solutions reveal that V502 O…