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arXiv · 2012.11133

The first photometric analysis and period investigation of the K-type W UMa type binary system V0842 Cep

Yu-Yang Li·Kai Li·Yuan Liu
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Abstract

V0842 Cep is a W UMa-type binary star that has been neglected since its discovery. We analysed the VR$_c$I$_c$ light curves, obtained by the 1 m telescope at the Weihai Observatory of Shandong University, using the Wilson-Devinney code. V0842 Cep was found to be a shallow contact binary system (f=8.7$\%$) with a mass ratio of 2.281. Because its orbital inclination is greater than 80$^\circ$, the photometric results are reliable. A period study is included which reveals a continually decreasing orbital period ($\frac{\mathrm{d}p}{\mathrm{d}t}$=1.50($\pm$0.42)$\times$10$^{-7}$dyr$^{-1}$). This trend could be attributed to the angular momentum loss via stellar wind.

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Yu-Yang Li, Kai Li, Yuan Liu. 2020-12-21. The first photometric analysis and period investigation of the K-type W UMa type binary system V0842 Cep. https://doi.org/10.1088/1674-4527/21/5/122

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