THE FIRST PHOTOMETRIC ANALYSIS OF THE OVERCONTACT BINARY MQ UMa WITH AN ADDITIONAL COMPONENT
文献类型：期刊论文
| 作者 | 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
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| 刊名 | ASTRONOMICAL JOURNAL
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| 出版日期 | 2015-09 |
| 卷号 | 150期号:3 |
| ISSN号 | 0004-6256 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Zhou, X (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650216, Peoples R China. |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | STAR LIGHT CURVES ; HIGH FILL-OUT ; VELOCITY CURVES ; DEEP ; CONTACT ; SYSTEMS ; PARAMETERS ; COMPANION ; BOOTIS ; CYGNI |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/1538-3881/150/3/83/ |
| 语种 | 英语 |
| WOS记录号 | WOS:000364008100020 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/5914]  |
| 专题 | 云南天文台_双星与变星研究组 云南天文台_中国科学院天体结构与演化重点实验室 |
| 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 |
| 推荐引用方式 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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来源：云南天文台
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