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

TL;DR

This paper reports the discovery and analysis of a deep, low mass ratio overcontact binary star GSC 03517-00663, revealing its physical parameters and light curve characteristics through observational data and modeling.

Contribution

It presents the first detailed analysis of GSC 03517-00663 as a deep, low mass ratio overcontact binary using new observational data and the Wilson-Devinney modeling approach.

Findings

Mass ratio q=0.164

Contact degree f=69.2%

Presence of a dark spot explaining the O'Connell effect

Abstract

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