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Red dwarf contact binary V0627 Hydrae
Xu HS(徐虎山)1,2; Zhu LY(朱俐颖)1,2,4; Thawicharat, Sarotsakulchai3; Boonrucksar, Soonthornthum3; Liu L(刘亮)1,2,4
刊名PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2022-02-17
关键词binaries: close binaries: eclipsing stars: individual (V0627 Hydrae) star: late-type
ISSN号0004-6264
DOI10.1093/pasj/psab128
产权排序第1完成单位
文献子类Article; Early Access
英文摘要

New complete light curves in B, V, R-C, and I-C bands for the short-period eclipsing binary V0627 Hya (period shorter than 0.22 d) are presented. From the longer wavelength to the shorter one, the amplitudes of the light variation become larger. The different height of the successive maxima in each band's light curve could be seen clearly. We analyzed those multi-wavelength light curves using the Wilson-Devinney code and derived the photometric solutions of V0627 Hya for the first time. It is found that V0627 Hya is a W-type shallow-contact binary. Combined with the GAIA parallax, the absolute parameters of this system are obtained: M-1 = 0.31 M-circle dot, M-2 = 0.64 M-circle dot, R-1 = 0.50 R-circle dot, R-2 = 0.69 R-circle dot, L-1 = 0.06 L-circle dot, L-2 = 0.08 L-circle dot. Thus, V0627 Hya is a new member of the red dwarf contact binary class. The asymmetry in the light curves could be explained by the spot model due to the magnetic activity of its late-type component. The amplitude differences in the different bands' light curves imply the existence of a cool third body, which is supported by the third light contribution in the photometric solutions. The third body in this system may play an important role in its formation and evolution by removing the angular momentum. More red dwarf contact binaries need to be found and studied, since they are rare and not enough is known to reveal their mysteries at present.

学科主题天文学 ; 恒星与银河系 ; 恒星形成与演化
URL标识查看原文
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
资助项目National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11922306] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11933008] ; Chinese Academy of Sciences(CAS) Interdisciplinary Innovation Team - National Development and Reform Commission
WOS关键词SHORT-PERIOD LIMIT ; SYSTEMS
WOS研究方向Astronomy & Astrophysics
语种英语
出版者OXFORD UNIV PRESS
WOS记录号WOS:000756649200001
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC)[11922306, 11933008] ; Chinese Academy of Sciences(CAS) Interdisciplinary Innovation Team - National Development and Reform Commission
内容类型期刊论文
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/24909]  
专题云南天文台_双星与变星研究组
通讯作者Xu HS(徐虎山)
作者单位1.University of the Chinese Academy of Sciences, Yuquan Road 19, Sijingshang Block, Beijing 100049, China;
2.Yunnan Observatories, Chinese Academy of Sciences (CAS), Kunming, P. O. Box 110, 650216, China;
3.National Astronomical Research Institute of Thailand, 191 Siriphanich Bldg., Huay Kaew Rd., Chiang Mai 50200, Thailand
4.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China;
推荐引用方式
GB/T 7714
Xu HS,Zhu LY,Thawicharat, Sarotsakulchai,et al. Red dwarf contact binary V0627 Hydrae[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2022.
APA Xu HS,Zhu LY,Thawicharat, Sarotsakulchai,Boonrucksar, Soonthornthum,&Liu L.(2022).Red dwarf contact binary V0627 Hydrae.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN.
MLA Xu HS,et al."Red dwarf contact binary V0627 Hydrae".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN (2022).
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