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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
Source PublicationNEW ASTRONOMY
2014-08
Volume31Pages:65-68
DOI10.1016/j.newast.2014.03.002
Contribution Rank第1完成单位
Indexed BySCI
KeywordStars: Binaries: Close Stars: Binaries: Eclipsing Stars: Individual (Lu Lac)
Abstract

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.

Funding ProjectChinese 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
Funding OrganizationChinese Natural Science Foundation[11133007, 11325315] ; West Light Foundation of the Chinese Academy of Sciences ; Key Laboratory Foundation of Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学 ; 恒星形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherELSEVIER SCIENCE BV
Publication PlacePO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN1384-1076
URL查看原文
Archive Date2014-03-28
WOS IDWOS:000335629700012
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCYCLIC PERIOD CHANGES ; CLOSE BINARIES ; LIGHT CURVES ; RS CVN ; SYSTEMS ; CONTACT ; ALGOL ; CYGNI
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5899
Collection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
Corresponding AuthorLiao WP(廖文萍)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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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