Discovery of a W UMa type binary GSC 03553-00845

TL;DR

This paper reports the discovery and analysis of a new W UMa type binary star, GSC 03553-00845, including its light curves and physical parameters, using photometric observations and modeling.

Contribution

The study provides the first detailed photometric analysis of GSC 03553-00845, revealing its classification, mass ratio, contact degree, and thermal contact status.

Findings

GSC 03553-00845 is a W-subtype W UMa binary.

The system has a mass ratio of q=2.904.

It is an overcontact binary with a contact degree of 29.5%.

Abstract

When observing the transiting extrasolar planets, we discovered a new W UMa type binary GSC 03553-00845. Following observation was carried out using the 1m telescope at Weihai Observatory of Shandong University. Complete BVR light curves were determined. Using the W-D program, we analyzed the light curves. Photometric solution reveals that GSC 03553-00845 is a W-subtype W UMa type binary with a mass ratio of q=2.904, it is an overcontact binary system by a contact degree of f=29.5% with a small temperature difference between the components (\Delta T=206 K indicating a good thermal contact between the components. More observation of GSC 03553-00845 is needed in order to analyze the light curve variation and orbital period change.