论文标题
K型W UMA型二元系统V0842 CEP的第一个光度分析和周期研究
The first photometric analysis and period investigation of the K-type W UMa type binary system V0842 Cep
论文作者
论文摘要
V0842 CEP是自发现以来一直被忽略的W UMA型二元星。我们使用Wilson-Devinney Code分析了由1 m望远镜在山东大学Weihai天文台获得的VR $ _C $ i $ _C $灯曲线。 V0842 CEP被发现是浅二进制二进制系统（F = 8.7 $ \％$），质量比为2.281。由于其轨道倾斜度大于80 $^\ Circ $，因此光度法是可靠的。包括一项周期研究，该研究揭示了轨道时期的不断减小（$ \ frac {\ mathrm {d} p} {\ mathrm {d} t} $ = 1.50（$ \ pm $ 0.42）$ \ times $ 10 $^{ - 7} $^{-7} $ DYR $^{ - DYR $^{ - 1} $）。这种趋势可以归因于通过恒星风的角动量损失。
V0842 Cep is a W UMa-type binary star that has been neglected since its discovery. We analysed the VR$_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.
