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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
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
2019
Volume131Issue:995Pages:7
DOI10.1088/1538-3873/aaeae2
Contribution Rank第1完成单位
Indexed BySCI
Keyword(stars:) binaries (including multiple): close (stars:) binaries: spectroscopic (stars:) binaries: eclipsing stars: solar-type stars: evolution stars: individual (...,...)
Abstract

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.

Funding ProjectNational 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
Funding OrganizationNational Natural Science Foundation of China[11873017, 11503077] ; Open Project Program of the Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-6280
URL查看原文
WOS IDWOS:000452773700001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCONTACT BINARIES ; PERIOD CHANGES ; ADDITIONAL COMPONENTS ; STARS ; LIGHT
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/18600
Collection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
Corresponding AuthorLiao WP(廖文萍)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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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