First CCD photometric investigation of the eclipsing binary V737 Per

被引:9
作者
Hu, Ke [1 ]
Cai, Jin-Ting [1 ]
Yu, Yun-Xia [1 ]
Xiang, Fu-Yuan [1 ]
机构
[1] Xiangtan Univ, Dept Phys, Xiangtan 411105, Hunan, Peoples R China
基金
中国国家自然科学基金;
关键词
Binaries: close; Binaries: eclipsing; Stars: evolution; Stars: individual (V737 Per); URSAE MAJORIS; LIGHT CURVES; STARS; EVOLUTION; SYSTEMS;
D O I
10.1016/j.newast.2018.06.007
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
New CCD photometric observations of the eclipsing binary V737 Per have been performed in 2015 and complete BV bands light curves are obtained. From the observations, four times of light minimum are determined. By combining these times of light minimum with those collected from literature, we derive a new linear ephemeris and investigate the orbital period variation. The result shows that no significant period variation can be found during the past twelve years. The present light curves are analyzed by using the Wilson Devinney code. The photometric solutions indicate that the system is an A-type, shallow-contact binary with a mass ratio of 0.41 and a degree of contact of 8.73%. Also, the asymmetry of the light curves is observed. It can be explained by a cool spot on the secondary component. Finally, we estimate the absolute parameters of V737 Per and discuss its evolutionary status. The results suggest that the primary of V737 Per has evolved away from the zero age main sequence.
引用
收藏
页码:52 / 58
页数:7
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