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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
Source PublicationASTRONOMICAL JOURNAL
2015-09
Volume150Issue:3
DOI10.1088/0004-6256/150/3/83
Contribution Rank第1完成单位
Indexed BySCI
Abstract

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.

Funding ProjectChinese Natural Science Foundation[11133007] ; Chinese Natural Science Foundation[11325315] ; Strategic Priority Research Program "The Emergence of Cosmological Structure" of the Chinese Academy of Sciences[XDB09010202] ; Science Foundation of Yunnan Province[2012HC011]
Funding OrganizationChinese 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]
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
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6256
URL查看原文
Archive Date2015-09-14
WOS IDWOS:000364008100020
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSTAR LIGHT CURVES ; HIGH FILL-OUT ; VELOCITY CURVES ; DEEP ; CONTACT ; SYSTEMS ; PARAMETERS ; COMPANION ; BOOTIS ; CYGNI
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5914
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 AuthorZhou X(周肖)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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,&Jiang LQ.(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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