The first photometric investigation of the contact binary OQ Cam

被引：2
作者：
Guo, Ya-Ni [1 ]
Li, Kai [1 ,2 ]
Xia, Qi-Qi [1 ]
Gao, Xing [2 ]
Jiang, Lin-Qiao [3 ]
Liu, Yuan [4 ]
机构：
[1] Shandong Univ, Inst Space Sci, Shandong Key Lab Opt Astron & Solar Terr Environm, Sch Space Sci & Phys, Weihai 264209, Peoples R China
[2] Xinjiang Astron Observ, Urumqi 830011, Peoples R China
[3] Sichuan Univ Sci & Engn, Artificial Intelligence Key Lab Sichuan Prov, Zigong 643000, Peoples R China
[4] Qilu Inst Technol, Jinan 250200, Peoples R China
来源：
RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2020年 / 20卷 / 11期
基金：
中国国家自然科学基金;
关键词：
stars; binaries; close; eclipsing; evolution; individual (OQ Cam); ECLIPSING BINARY; MASS-RATIO; STAR LIGHT; EVOLUTION; SYSTEMS; ORIGIN;
D O I：
10.1088/1674-4527/20/11/179
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The first charge-coupled device photometric light curves in B, V, R-c, and I-c bands of the short-period contact binary star OQ Cam are presented. Through analyzing the light curves with the Wilson-Devinney code, it is found that OQ Cam is a W-type shallow contact binary star with a contact degree of f = 20.2%. Based on the O - C analyzing, the orbit period displays a long term increasing with a rate of dP/dt = 4.40 x 10(-7) d yr(-1). The increasing in orbit period can be interpreted by mass transfer from the less massive component to the more massive one. As the orbit period increases, OQ Cam would evolve from the present shallow contact configuration to a non-contact stage. So it may be a potential candidate to confirm the thermal relaxation oscillation theory.
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页数：7
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