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

被引：2

作者：

Li, Yu-Yang ^{[1
]}

Li, Kai ^{[1
]}

Liu, Yuan ^{[2
]}

机构：

[1] Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China

[2] Qilu Inst Technol, Jinan 250200, Peoples R China

来源：

RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2021年 / 21卷 / 05期

关键词：

stars: binaries: close; stars: binaries: eclipsing; stars: individual (V0842 Cep); CONTACT BINARIES; VARIABLE-STARS; EVOLUTION; PARAMETERS; CATALOG; LIMIT;

D O I：

10.1088/1674-4527/21/5/122

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

V0842 Cep is a W UMa-type binary star that has been neglected since its discovery. We analysed the V RcIc light curves, obtained by the 1 m telescope at 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 degrees, the photometric results are reliable. A period study is included which reveals a continually decreasing orbital period (dp/dt = 1.50(+/- 0.42)x10(-7) d yr(-1)). This trend could be attributed to the angular momentum loss via stellar wind.

引用

页数：6

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