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A CCD PHOTOMETRIC STUDY OF THE CONTACT BINARY STAR GSC 03526-01995
Liao WP(廖文萍)1,2; Qian SB(钱声帮)1,2,3; Liu NP(刘念平)1,2,3; Liao, WP (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
Source PublicationASTRONOMICAL JOURNAL
2012-12
Volume144Issue:6
DOI10.1088/0004-6256/144/6/178
Contribution Rank第1完成单位
Indexed BySCI
KeywordBinaries: Close Binaries: Eclipsing Stars: Individual (Gsc 03526-01995)
AbstractWe present the first two sets of complete light curves in the R and I bands observed in 2011 and 2012 photometrically for the contact binary GSC 03526-01995. The asymmetric light curves are analyzed with spot models using the Wilson-Devinney code. It is discovered that GSC 03526-01995 is a spotted marginal W-type W UMa contact binary system with a mass ratio of q = 2.845(+/- 0.006) and a degree of contact factor f = 18.2%(+/- 1.5%). Combining new determined times of light minimum together with the others published in the literature, the period change of the system is investigated. A cyclic variation, with a period of 7.39 yr and a semiamplitude of 0.00896 days, is discovered. It is plausibly caused by the light-time effect via a third body. The photometric analysis indicates that the suspected third companion might itself be a binary consisting of two stars of 0.285 solar masses, suggesting that GSC 03526-01995 is a quadruple system containing four late-type stars.
Funding OrganizationSpecial Foundation of the President of the Chinese Academy of Sciences ; Yunnan Natural Science Foundation [Y1XB041001] ; Chinese Natural Science Foundation [11133007, 11203066, 11103074]
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-6256
URL查看原文
Archive Date2012-12-10
WOS IDWOS:000311165400021
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordUNSOLVED QUADRUPLE SYSTEM ; PERIOD CHANGES ; ECLIPSING BINARY ; COMAE BERENICES ; URSAE MAJORIS ; PHYSICAL PARAMETERS ; CLOSE BINARIES ; ORBITAL PERIOD ; LIGHT CURVES ; CATALOG
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5860
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 (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
Affiliation1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011 Kunming, P. R. China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, P. R. China
3.Graduate School of the Chinese Academy of Sciences, Yuquan Road 19#, SijingShan Block, 100049 Beijing City, P. R. China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Liao WP,Qian SB,Liu NP,et al. A CCD PHOTOMETRIC STUDY OF THE CONTACT BINARY STAR GSC 03526-01995[J]. ASTRONOMICAL JOURNAL,2012,144(6).
APA Liao WP,Qian SB,Liu NP,&Liao, WP .(2012).A CCD PHOTOMETRIC STUDY OF THE CONTACT BINARY STAR GSC 03526-01995.ASTRONOMICAL JOURNAL,144(6).
MLA Liao WP,et al."A CCD PHOTOMETRIC STUDY OF THE CONTACT BINARY STAR GSC 03526-01995".ASTRONOMICAL JOURNAL 144.6(2012).
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