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The Nearby Very Low Mass Triple Star LHS 1070
Xia, Fang1; Fu, Yanning1; Wang XL(王晓丽)2,3
Source PublicationASTROPHYSICAL JOURNAL
2019-09-10
Volume882Issue:2Pages:6
DOI10.3847/1538-4357/ab32de
Contribution Rank第2完成单位
Indexed BySCI
Keywordbinaries: close methods: data analysis stars: fundamental parameters stars: individual (LHS 1070) stars: kinematics and dynamics
Abstract

The component masses and kinematic parameters of the triple star LHS 1070 are redetermined by using the three-body model. It is shown that the discrepancy between new observations and the two-body fitting results is due to the three-body effects, which justifies the necessity of using the three-body model. Numerical integration shows that the three-body system remains integrated and its hierarchical configuration remains unchanged since the formation of the components. This implies that the triple star may not be formed by a three-body encounter. Also, the possibility that the most massive component is itself a tightly bounded binary is excluded based on the redetermined dynamical mass. The improved dynamical masses of the three components are greatly helpful to constrain at the lower end of the stellar empirical mass-luminosity relation.

Funding ProjectNational Natural Science Foundation of China[11178006] ; National Natural Science Foundation of China[11673071] ; National Natural Science Foundation of China[11273066] ; National Natural Science Foundation of China[11603072] ; National Natural Science Foundation of China[11727806]
Funding OrganizationNational Natural Science Foundation of China[11178006, 11673071, 11273066, 11603072, 11727806]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000485719800012
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordLUMINOSITY-RELATION ; CD-ROM ; PARALLAXES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/20971
Collection丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
Affiliation1.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, People's Republic of China;
2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People's Republic of China
Recommended Citation
GB/T 7714
Xia, Fang,Fu, Yanning,Wang XL. The Nearby Very Low Mass Triple Star LHS 1070[J]. ASTROPHYSICAL JOURNAL,2019,882(2):6.
APA Xia, Fang,Fu, Yanning,&Wang XL.(2019).The Nearby Very Low Mass Triple Star LHS 1070.ASTROPHYSICAL JOURNAL,882(2),6.
MLA Xia, Fang,et al."The Nearby Very Low Mass Triple Star LHS 1070".ASTROPHYSICAL JOURNAL 882.2(2019):6.
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