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THE FIRST PHOTOMETRIC INVESTIGATION OF THE NEGLECTED W-UMa-TYPE BINARY STAR V532 MONOCEROTIS
He JJ(何家佳)1,2,3; Qian SB(钱声帮)1,2,4; Soonthornthum, B.3; He, JJ
发表期刊ASTRONOMICAL JOURNAL
2016-11-01
卷号152期号:5页码:120-127
DOI10.3847/0004-6256/152/5/120
产权排序第1完成单位
收录类别SCI
关键词Binaries: Close Binaries: Eclipsing Stars: Evolution Stars: Individual (V532 Mon)
摘要The first two sets of complete charge-coupled device light curves in the B and V bands of the short-period binary system, V532 Mon, are presented. The light curves are analyzed with spot models using the Wilson-Devinney code. V532 Mon is found to be an A-subtype intermediate-contact binary with a degree of contact factor of f= 47.1%(+/- 2.7%), a mass ratio of q= 0.2502(+/- 0.0019), and a cool spot on the primary component. The period changes of the system are investigated by combining newly determined times of light minimum with others published in the literature. We found that the general trend of the observed-calculated (O - C) curve shows a downward parabolic variation that corresponds to a long-term decrease in the orbital period at a rate of dP dt = -1.716(+/- 0.002) x 10(-7) dyr(-1). The long-term decrease of the orbital period can be explained by mass transfer from the more-massive component to the less massive one. The long-time period decrease, the intermediate-contact configuration, and the astrophysical parameters of the binary system suggest that V532 Mon will evolve into high fill-out, extreme mass-ratio overcontact binaries.
项目资助者Chinese Natural Science Foundation(11203066, 11133007, 11325315) ; Science Foundation of Yunnan Province(2012HC011) ; Strategic Priority Research Program "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences(XDB09010202) ; Key Laboratory Foundation of Chinese Academy of Sciences
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2017-06-15
WOS记录号WOS:000386614500001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]LIGHT ; CATALOG ; CURVES
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9755
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He, JJ
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.National Astronomical Research Institute of Thailand, 191 Siriphanich Bidg. 2nd Fl. Huay Kaew Rd. Suthep District, Muang, Chiang Mai 50200, Thailand
4.University of the Chinese Academy of Science, Yuquan Road 19#, Sijingshang Block, 100049 Beijing, China
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He JJ,Qian SB,Soonthornthum, B.,et al. THE FIRST PHOTOMETRIC INVESTIGATION OF THE NEGLECTED W-UMa-TYPE BINARY STAR V532 MONOCEROTIS[J]. ASTRONOMICAL JOURNAL,2016,152(5):120-127.
APA He JJ,Qian SB,Soonthornthum, B.,&He, JJ.(2016).THE FIRST PHOTOMETRIC INVESTIGATION OF THE NEGLECTED W-UMa-TYPE BINARY STAR V532 MONOCEROTIS.ASTRONOMICAL JOURNAL,152(5),120-127.
MLA He JJ,et al."THE FIRST PHOTOMETRIC INVESTIGATION OF THE NEGLECTED W-UMa-TYPE BINARY STAR V532 MONOCEROTIS".ASTRONOMICAL JOURNAL 152.5(2016):120-127.
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