First photometric study of W UMa binary star LU Lac

doi:10.1016/j.newast.2014.03.002

YNAO OpenIR > 双星与变星研究组

	First photometric study of W UMa binary star LU Lac
	Liao WP(廖文萍)1,2 ; Qian SB(钱声帮)1,2,3 ; Zhao EG(赵二刚)1,2,3 ; Jiang LQ(江林巧)1,2,3
发表期刊	NEW ASTRONOMY
	2014-08
卷号	31 页码:65-68
DOI	10.1016/j.newast.2014.03.002
产权排序	第1完成单位
收录类别	SCI
关键词	Stars: Binaries: Close Stars: Binaries: Eclipsing Stars: Individual (Lu Lac)
摘要	LU Lac is a neglected W UMa binary star in photometric investigations. In this paper, we present BVRI CCD photometric light curves obtained on-one night in 2012. The first photometric solutions of this system are computed by using the Wilson-Devinney code. It is shown that LU Lac is a marginal contact W-type system with a degree of contact factor of f = 8.9%, a mass ratio of q = 2.085 and a high inclination of i = 82 degrees.20. From the first analyses of orbital period changes, we found the period variation of the system includes an oscillation (A(3) = 0.0125 days and T-3 = 51.92 years). The cyclic change may be attributed to the light-travel time effect through the presence of a third body. (c) 2014 Elsevier B.V. All rights reserved.
资助项目	Chinese Natural Science Foundation[11133007] ; Chinese Natural Science Foundation[11325315] ; West Light Foundation of the Chinese Academy of Sciences ; Key Laboratory Foundation of Chinese Academy of Sciences
项目资助者	Chinese Natural Science Foundation[11133007, 11325315] ; West Light Foundation of the Chinese Academy of Sciences ; Key Laboratory Foundation of Chinese Academy of Sciences
语种	英语
学科领域	天文学 ; 恒星与银河系 ; 恒星天文学 ; 恒星形成与演化
文章类型	Article
出版者	ELSEVIER SCIENCE BV
出版地	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN	1384-1076
URL	查看原文
归档日期	2014-03-28
WOS记录号	WOS:000335629700012
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	CYCLIC PERIOD CHANGES ; CLOSE BINARIES ; LIGHT CURVES ; RS CVN ; SYSTEMS ; CONTACT ; ALGOL ; CYGNI
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/5899
专题	双星与变星研究组中国科学院天体结构与演化重点实验室
通讯作者	Liao WP(廖文萍)
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, PO Box 110, 650011 Kunming, China 2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, PO Box 110, 650011 Kunming, China 3.University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
第一作者单位	中国科学院云南天文台
通讯作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Liao WP,Qian SB,Zhao EG,et al. First photometric study of W UMa binary star LU Lac[J]. NEW ASTRONOMY,2014,31:65-68.
APA	Liao WP,Qian SB,Zhao EG,&Jiang LQ.(2014).First photometric study of W UMa binary star LU Lac.NEW ASTRONOMY,31,65-68.
MLA	Liao WP,et al."First photometric study of W UMa binary star LU Lac".NEW ASTRONOMY 31(2014):65-68.

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