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A possible expanding component in the extreme mass ratio deep contact binary V710 Monocerotis
Liu L(刘亮)1,2; Chen, WP3,4; Na, WW5,6; Qian SB(钱声帮)1,2; Zhang, L5; Soonthornthum, B7; Neelam, P3; Zhu LY(朱俐颖)1,2; He JJ(何家佳)1,2; Han ZT(韩忠涛)1,2; Liu, L (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
发表期刊NEW ASTRONOMY
2014-08
卷号31页码:60-64
DOI10.1016/j.newast.2014.03.001
产权排序第1完成单位
收录类别SCI
关键词Stars: Binaries: Close Stars: Binaries: Eclipsing Stars: Binaries: Evolution Stars: Individual: V710 Mon
摘要We present CCD light curves of V710 Mon obtained in 2007 and 2013. By using the 2010 version of the W-D code, it is found that the star is a deep (59.5-62.7%) contact binary system, with an extreme mass ratio (0.143-0.183). The period of the system increases with a rate dP/dt = +1.95( +/- 0.06) x 10(-7) days/year. We propose that the system contains a post-main-sequence component which may be in an expanding phase. The time scale of the orbital increase nearly equals to the time for the post-main-sequence star to evolve into a subgiant. The age of the primary is estimated to be 5.34 Gyr. (c) 2014 Published by Elsevier B.V.
项目资助者Chinese Natural Science Foundation [11103074, 11325315, 11133007] ; West Light Foundation of the Chinese Academy of Sciences
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1384-1076
URL查看原文
归档日期2015-07-20
WOS记录号WOS:000335629700011
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]OLD OPEN CLUSTERS ; VELOCITY CURVES ; CCD PHOTOMETRY ; STARS ; LIGHT ; CALIBRATION ; PARAMETERS ; EVOLUTION
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被引频次:4[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/114a53/5898
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Liu, L (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
作者单位1.Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, 650011 Kunming, PR China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, PR China
3.Graduate Institute of Astronomy, National Central University, Taiwan
4.Department of Physics, National Central University, Taiwan
5.Department of Physics, Yunnan University, 650091 Kunming, Yunnan province, PR China
6.Department of Physics, Yuxi Normal University, 653100 Yuxi, Yunnan province, PR China
7.National Astronomical Research Institute of Thailand, 191 Siriphanich Bldg., Huay Kaew Rd., Chiang Mai 50200, Thailand
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Liu L,Chen, WP,Na, WW,et al. A possible expanding component in the extreme mass ratio deep contact binary V710 Monocerotis[J]. NEW ASTRONOMY,2014,31:60-64.
APA Liu L.,Chen, WP.,Na, WW.,Qian SB.,Zhang, L.,...&Liu, L .(2014).A possible expanding component in the extreme mass ratio deep contact binary V710 Monocerotis.NEW ASTRONOMY,31,60-64.
MLA Liu L,et al."A possible expanding component in the extreme mass ratio deep contact binary V710 Monocerotis".NEW ASTRONOMY 31(2014):60-64.
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