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THE FIRST PHOTOMETRIC ANALYSIS OF THE OVERCONTACT BINARY MQ UMa WITH AN ADDITIONAL COMPONENT
Zhou X(周肖)1,2,3; Qian SB(钱声帮)1,2,3; Liao WP(廖文萍)1,2; Zhao EG(赵二刚)1,2,3; Wang JJ(王晶晶)1,2,3; Jiang LQ(江林巧)1,2,3; Zhou, X (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650216, Peoples R China.
发表期刊ASTRONOMICAL JOURNAL
2015-09
卷号150期号:3
DOI10.1088/0004-6256/150/3/83
产权排序第1完成单位
收录类别SCI
摘要The first V R-c I-c band light curves of MQ UMa are presented and analyzed using the Wilson-Devinney (W-D) program. It is discovered that MQ UMa is an A-subtype contact binary with a high fill-out (f = 82%) and a low mass ratio (q = 0.195), which indicates that it is in the late evolutionary stage of late-type tidal-locked binary stars. The mass of the primary and secondary stars is estimated and the evolutionary status of the two components are placed on the H-R diagram. The W-D solutions also indicate that MQ UMa may be a triple system with an additional F5V type component. A sample of 16 high fill-out, low mass ratio overcontact binaries is collected and their possible evolution scenarios are discussed. Using the five times of minimum light recently observed together with those collected from the literature, the authors find that the observed-calculated (O-C) curve exhibits cyclic period variation. The cyclic period change also reveals the presence of a tertiary component, which may play an important role in the formation and evolution of this binary system by drawing angular momentum from the central system.
项目资助者Chinese Natural Science Foundation [11133007, 11325315] ; Strategic Priority Research Program "The Emergence of Cosmological Structure" of the Chinese Academy of Sciences [XDB09010202] ; Science Foundation of Yunnan Province [2012HC011]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-6256
URL查看原文
归档日期2015-09-14
WOS记录号WOS:000364008100020
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]STAR LIGHT CURVES ; HIGH FILL-OUT ; VELOCITY CURVES ; DEEP ; CONTACT ; SYSTEMS ; PARAMETERS ; COMPANION ; BOOTIS ; CYGNI
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被引频次:5[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/114a53/5914
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Zhou, X (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650216, Peoples R China.
作者单位1.Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, 650216 Kunming, China
2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. Box 110, 650216 Kunming, China
3.University of the Chinese Academy of Science, Yuquan Road 19#, Sijingshang Block, 100049 Beijing, China
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GB/T 7714
Zhou X,Qian SB,Liao WP,et al. THE FIRST PHOTOMETRIC ANALYSIS OF THE OVERCONTACT BINARY MQ UMa WITH AN ADDITIONAL COMPONENT[J]. ASTRONOMICAL JOURNAL,2015,150(3).
APA Zhou X.,Qian SB.,Liao WP.,Zhao EG.,Wang JJ.,...&Zhou, X .(2015).THE FIRST PHOTOMETRIC ANALYSIS OF THE OVERCONTACT BINARY MQ UMa WITH AN ADDITIONAL COMPONENT.ASTRONOMICAL JOURNAL,150(3).
MLA Zhou X,et al."THE FIRST PHOTOMETRIC ANALYSIS OF THE OVERCONTACT BINARY MQ UMa WITH AN ADDITIONAL COMPONENT".ASTRONOMICAL JOURNAL 150.3(2015).
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