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Close-in companions to contact binary stars
Qian SB(钱声帮)1,2; Zhu LY(朱俐颖)1,2; M. Zejda3; Z. Mikulášek3; Wang JJ(王晶晶)1,2; Liu NP(刘念平)1,2
会议录名称EAS Publications Series - Proceedings of the conference “Setting a New Standard in the Analysis of Binary Stars”
2013-02
卷号64
页码131-134
DOI10.1051/eas/1364018
会议录编者/会议主办者K. Pavlovski, A. Tkachenko and G. Torres
产权排序第1完成单位
收录类别其他
会议名称Setting a New Standard in the Analysis of Binary Stars
会议日期N/A
会议地点N/A
摘要

W UMa-type contact binaries are composed of two late-type main-sequence stars, where both components are filling their critical Roche Lobes and sharing a common convective envelope. Their formation and evolution are unsolved problems in stellar astrophysics. This kind of binary systems have the lowest angular momentum and shortest orbital periods among main-sequence binaries. One of the possibilities for their origin is that the angular momentums of binary stars are transferred from the central binaries to close-in companions. In this paper, we will summarize some of our recent progresses on searching for close-in companions to contact binary stars, including the closest stellar companion to a contact binary at an orbital separation of about 0.8 AU. Then, based on the observational properties of those close-in companions, the formation and the evolution of contact binaries will be discussed.

资助项目Chinese Natural Science Foundation through a key project[11133007] ; Ministry of Education of the Czech Republic[LH12175]
项目资助者Chinese Natural Science Foundation through a key project ; Ministry of Education of the Czech Republic
语种英语
学科领域天文学 ; 天体物理学 ; 恒星与银河系
学科门类理学 ; 理学::天文学
文章类型Proceedings Paper
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归档日期2014-08-12
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文献类型会议论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9641
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
作者单位1.Yunnan Observatories, Chinese Academy of Sciences (CAS), 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, PR China
3.Department of Theoretical Physics and Astrophysics, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
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Qian SB,Zhu LY,M. Zejda,et al. Close-in companions to contact binary stars[C]//K. Pavlovski, A. Tkachenko and G. Torres,2013:131-134.
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