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Photometric investigation of the contact binary GU Orionis with high metallicity
Zhou X(周肖)1,2,3,4; Qian SB(钱声帮)1,2,3,5; Boonrucksar, Soonthornthum4; Poshyachinda, Saran4; Zhu LY(朱俐颖)1,2,3,5; Liu NP(刘念平)1,2,3; Sarotsakulchai, Thawicharat1,2,3,5; Fang XH(方小慧)1,2,3,5
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2018-10-01
卷号70期号:5页码:9
DOI10.1093/pasj/psy084
产权排序第1完成单位
收录类别SCI ; EI
关键词binaries: photometric stars: formation stars: individual (GU Orionis)
摘要

GU Ori was observed with the 1 m telescope at Yunnan Observatories in 2005. To determine its physical properties, the Wilson-Devinney program was used. The results reveal that GU Ori is a W-subtype shallow contact binary with a more massive but cooler second star. The masses of its two component stars are estimated to be M-1 = 0.45 M-circle dot, M-2 = 1.05 M-circle dot. The O'Connell effect was reported to be negative on the light curves observed in 2005. However, it changed to a positive one on the light curves observed from 2011 to 2012. The mean surface temperatures of star 2 (T-2) determined by the two sets of light curves were different, which may result from stellar activity. The O - C diagram shows that the period of GU Ori is decreasing at a rate of dP/dt = -6.24 x 10(-8) dyr(-1), which may be caused by mass transfer from star 2 to star 1 with a rate of dM(2)/dt = -2.98 x 10(-8) M-circle dot yr(-1). GUOri is a contact binary with quite high metallicity.

资助项目Chinese Natural Science Foundation[11703080] ; Chinese Natural Science Foundation[11703082] ; Yunnan Natural Science Foundation[2018FB006] ; National Development and Reform Commission
项目资助者Chinese Natural Science Foundation[11703080, 11703082] ; Yunnan Natural Science Foundation[2018FB006] ; National Development and Reform Commission
语种英语
学科领域天文学 ; 恒星与银河系 ; 恒星天文学 ; 恒星形成与演化
学科门类理学 ; 理学::天文学
文章类型Article
出版者OXFORD UNIV PRESS
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0004-6264
URL查看原文
WOS记录号WOS:000456070400008
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]EVOLUTIONARY STATE ; DATA RELEASE ; ORIGIN ; STARS ; LIGHT
EI入藏号20215211380068
EI主题词Photometry
EI分类号641.3 Mass Transfer - 657.2 Extraterrestrial Physics and Stellar Phenomena - 941.4 Optical Variables Measurements
引用统计
被引频次:11[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/114a53/19160
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Zhou X(周肖)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences (CAS), P.O. Box 110, 650216 Kunming, P. R. China
2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P. O. Box 110, 650216 Kunming, P. R. China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, P. R. China
4.National Astronomical Research Institute of Thailand, 260 Moo 4, T. Donkaew, A. Maerim, Chiangmai, 50180, Thailand
5.University of the Chinese Academy of Sciences, Yuquan Road 19#, Sijingshang Block, 100049 Beijing, P. R. China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
推荐引用方式
GB/T 7714
Zhou X,Qian SB,Boonrucksar, Soonthornthum,et al. Photometric investigation of the contact binary GU Orionis with high metallicity[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2018,70(5):9.
APA Zhou X.,Qian SB.,Boonrucksar, Soonthornthum.,Poshyachinda, Saran.,Zhu LY.,...&Fang XH.(2018).Photometric investigation of the contact binary GU Orionis with high metallicity.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,70(5),9.
MLA Zhou X,et al."Photometric investigation of the contact binary GU Orionis with high metallicity".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 70.5(2018):9.
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