The first photometric analysis of the totally eclipsing contact binary V811 Cep

doi:10.1088/1674-4527/21/8/193

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	The first photometric analysis of the totally eclipsing contact binary V811 Cep
	Gao, Xiang 1; Li, Kai 1; Gao, Xing 2; Liu, Yuan 3
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2021-10-01
卷号	21 期号:8 页码:7
关键词	binaries: close binaries: eclipsing stars: evolution stars: individual (V811 Cep)
ISSN号	1674-4527
DOI	10.1088/1674-4527/21/8/193
通讯作者	Li, Kai(kaili@sdu.edu.cn)
英文摘要	The first photometric analysis of V811 Cep was carried out. The first complete light curves of V, R and I bands are given. The analysis was carried out by the Wilson-Devinney (W-D) program, and the results show that V811 Cep is a median-contact binary (f = 33.9(+/- 4.9)%) with a mass ratio of 0.285. It is a W-subtype contact binary, that is, the component with less mass is hotter than the component with more mass, and the light curves are asymmetric (O'Connell effect), which can be explained by the existence of a hot spot on the component with less mass. The orbital inclination is i = 88.3 degrees, indicating that it is a totally eclipsing binary, so the parameters obtained are reliable. Through the O-C analyzing, it is found that the orbital period decreases at the rate of (P) over dot = -3.90(+/- 0.06) x 10(-7)d yr(-1), which indicates that the mass transfer occurs from the more massive component to the less massive one.
资助项目	National Natural Science Foundation of China (NSFC)[U1931103] ; Chinese Academy of Sciences (CAS)[U1931103] ; NSFC[11703016] ; Young Scholars Program of Shandong University, Weihai[20820171006] ; Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects[OP201704]
WOS关键词	LIGHT CURVES ; STAR LIGHT ; CATALOG ; UMA
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号	WOS:000711656500001
资助机构	National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; NSFC ; Young Scholars Program of Shandong University, Weihai ; Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/4301]
专题	研究单元未命名
通讯作者	Li, Kai
作者单位	1.Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China 2.Xinjiang Astron Observ, Urumqi 830011, Peoples R China 3.Qilu Inst Technol, Jinan 250200, Peoples R China
推荐引用方式 GB/T 7714	Gao, Xiang,Li, Kai,Gao, Xing,et al. The first photometric analysis of the totally eclipsing contact binary V811 Cep[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(8):7.
APA	Gao, Xiang,Li, Kai,Gao, Xing,&Liu, Yuan.(2021).The first photometric analysis of the totally eclipsing contact binary V811 Cep.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(8),7.
MLA	Gao, Xiang,et al."The first photometric analysis of the totally eclipsing contact binary V811 Cep".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.8(2021):7.