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First Photometric Investigations of the Solar-type Binary FV CVn in Multiple Systems
Liao WP(廖文萍)1,2,3; Sarotsakulchai, T.1,4,5
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
2019
卷号131期号:995页码:7
DOI10.1088/1538-3873/aaeae2
产权排序第1完成单位
收录类别SCI
关键词(stars:) binaries (including multiple): close (stars:) binaries: spectroscopic (stars:) binaries: eclipsing stars: solar-type stars: evolution stars: individual (...,...)
摘要

FV CVn is a solar-type (G7) eclipsing binary whose analysis has so far been ignored. We observed it from 2014 January to 2018 May. The first photometric and orbital period investigation are presented here, combined with spectroscopic observations obtained by the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST). The current preliminary solutions show that FV CVn is a new W-subtype contact binary with a mass ratio of q = M-2/M-1 = 2.44(+/- 0.20) and a temperature difference of Delta T = T-2 -T-1 similar or equal to -315 K. The orbital period investigation suggests that a cyclic variation of A = 0.0184(+/- 0.0034) days and P-3 = 17.65(+/- 0.076) years exists in FV CVn. This cyclic variation is analyzed for the light-travel-time effect (LTTE) via the presence of a third body with a minimum mass of M-3min = 0.73(+/- 0.018) M-circle dot, and an orbital semimajor axis shorter than 5.27(+/- 1.62) au. This is in agreement with the presence of a large quantity of a third light in the system. Photometric solutions suggest that the third body contributes about 26.4(+/- 6.3)% in R-c, and 29.0(+/- 5.9)% in I-c to the total light of the multiple system. The additional component may play an important role in the origin and evolution of central close binary. New radial velocities are needed in the future to check the accuracy of the absolute parameters.

资助项目National Natural Science Foundation of China[11873017] ; National Natural Science Foundation of China[11503077] ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
项目资助者National Natural Science Foundation of China[11873017, 11503077] ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
语种英语
学科领域天文学 ; 恒星与银河系
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6280
URL查看原文
WOS记录号WOS:000452773700001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CONTACT BINARIES ; PERIOD CHANGES ; ADDITIONAL COMPONENTS ; STARS ; LIGHT
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/18600
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Liao WP(廖文萍)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences (CAS), 650216 Kunming, People's Republic of China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650216 Kunming, People's Republic of China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China
4.University of the Chinese Academy of Sciences, Yuquan Road 19#, Shijingshan Block, 100049 Beijing, People's Republic of China
5.National Astronomical Research Institute of Thailand, 191 Siripanich Bldg., Chiang Mai 50200, Thailand
推荐引用方式
GB/T 7714
Liao WP,Sarotsakulchai, T.. First Photometric Investigations of the Solar-type Binary FV CVn in Multiple Systems[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,2019,131(995):7.
APA Liao WP,&Sarotsakulchai, T..(2019).First Photometric Investigations of the Solar-type Binary FV CVn in Multiple Systems.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC,131(995),7.
MLA Liao WP,et al."First Photometric Investigations of the Solar-type Binary FV CVn in Multiple Systems".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC 131.995(2019):7.
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