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NSVS 11868841: An active detached eclipsing binary system with a substellar object
Zhang, B.1,2; Qian SB(钱声帮)1,2,3,4,5,6; Zhi, Q.-J.1,2; Dong, A.-J.1,2; Zhu LY(朱俐颖)3,4
Source PublicationNEW ASTRONOMY
2022-02
Volume91
DOI10.1016/j.newast.2021.101678
Contribution Rank第3完成单位
Indexed BySCI
KeywordBinary Eclipsing binary Orbital period Light curves
Abstract

Four-color CCD photometric light curves (LCs) of eclipsing binary (EB) NSVS 11868841 are presented in this paper. These LCs are analyzed by using the 2013 version of the Wilson-Devinney (W-D) code. We found that NSVS 11868841 is a late-type low-mass detached EB with an orbit inclination nearly 90 degrees. The LCs are asymmetric, especially in its out-of-eclipse. Based on all available times of the light minimum, we analyzed the variations of the orbital period by using the (O-C) method. The O-C curve shows a cycle oscillation with a period of 11.83(+/- 0.04) years and an amplitude of 0.0009 days (similar to 1.3 min). This cyclic change detected in NSVS 11868841 could be explained by the light-travel time effect (LTTE) via the presence of a third body. Subsequently, we calculated the mass of this third component as M(3)sin(i(3))=0.047(+/- 0.015)M-circle dot. If the third body is coplanar with the central system, it may be a brown dwarf. And this discovery will provide important insights on the formation and evolution of brown dwarf companions.

Funding ProjectNational Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC)[U1931101] ; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC)[U1731238] ; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC)[U1831120] ; Chinese Academy of Sciences (CAS)Chinese Academy of Sciences[U1931101] ; Chinese Academy of Sciences (CAS)Chinese Academy of Sciences[U1731238] ; Chinese Academy of Sciences (CAS)Chinese Academy of Sciences[U1831120] ; NSFCNational Natural Science Foundation of China (NSFC)[11933008] ; Guizhou Normal University ; Guizhou Provincial Science and Technology Foundation ; Open Project Program of the CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
Funding OrganizationNational Natural Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC)[U1931101, U1731238, U1831120] ; Chinese Academy of Sciences (CAS)Chinese Academy of Sciences[U1931101, U1731238, U1831120] ; NSFCNational Natural Science Foundation of China (NSFC)[11933008] ; Guizhou Normal University[2018 (GZNUD[2018] 12] ; Guizhou Provincial Science and Technology Foundation[[2020]1Y017] ; Open Project Program of the CAS 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 ; 恒星形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherELSEVIER
Publication PlaceRADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
ISSN1384-1076
URL查看原文
WOS IDWOS:000701732000008
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordORBITAL PERIOD MODULATION ; LIGHT CURVES ; EVOLUTION
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ynao.ac.cn/handle/114a53/24579
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 AuthorZhang, B.
Affiliation1.School of Physics and Electronic Science, 550025Guizhou Normal University Guiyang, China;
2.Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing, GuiyangGuizhou Normal University 550025, China;
3.Yunnan Observatories, P.O. Box 110, 650216 Chinese Academy of Sciences (CAS) Kunming, China;
4.Key Laboratory for the Structure and Evolution of Celestial Objects, P.O. Box 110, KunmingChinese Academy of Sciences 650216, China;
5.University of Chinese Academy of Sciences , 100049Yuquan Road 19#, Sijingshang Block Beijing, China;
6.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, China
Recommended Citation
GB/T 7714
Zhang, B.,Qian SB,Zhi, Q.-J.,et al. NSVS 11868841: An active detached eclipsing binary system with a substellar object[J]. NEW ASTRONOMY,2022,91.
APA Zhang, B.,Qian SB,Zhi, Q.-J.,Dong, A.-J.,&Zhu LY.(2022).NSVS 11868841: An active detached eclipsing binary system with a substellar object.NEW ASTRONOMY,91.
MLA Zhang, B.,et al."NSVS 11868841: An active detached eclipsing binary system with a substellar object".NEW ASTRONOMY 91(2022).
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