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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; Liao, WP (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊NEW ASTRONOMY
2014-08
卷号31页码:65-68
DOI10.1016/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.
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Astronomy & Astrophysics
文章类型Article
ISSN1384-1076
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
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被引频次:4[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 (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
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
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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,&Liao, WP .(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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