Vol 15, No 6

Discovery of a deep, low mass ratio overcontact binary GSC 03517–00663

Di-Fu Guo, Kai Li, Shao-Ming Hu, Yun-Guo Jiang, Dong-Yang Gao, Xu Chen


Abstract When observing blazars, we identified a new eclipsing binary named GSC 03517–00663. The light curves of GSC 03517–00663 are typical of EW-type light curves. Based on the observation using the 1 m telescope at the Weihai Observatory of Shandong University, complete VRI light curves were determined. Then, we analyzed the multiple light curves using the Wilson-Devinney program. It was found that GSC 03517–00663 has a mass ratio of q = 0.164 and a degree of contact of f = 69.2%. GSC 03517–00663 is a deep, low mass ratio overcontact binary. The light curves of GSC 03517–00663 show a strong O’Connell effect, which was explained by employing a dark spot on the secondary component.


Keywords stars: binaries: close — stars: binaries: eclipsing — stars: individual (GSC 03517–00663)

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