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A search for substellar objects orbiting the sdB eclipsing binary HS 0705+6700
Qian SB(钱声帮)1,2,3; Shi G(时光)1,2,3; Zola, S4,5; Koziel-Wierzbowska, D4; Winiarski, M5; Szymanski, T4; Ogloza, W5; Li LJ(李临甲)1,2,3; Zhu LY(朱俐颖)1,2,3; Liu L(刘亮)1,2; He JJ(何家佳)1,2; Liao WP(廖文萍)1,2; Zhao EG(赵二刚)1,2; Wang JJ(王晶晶)1,2,3; Zhang J(张嘉)1,2,3; Jiang LQ(江林巧)1,2,3
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2013-12
Volume436Issue:2Pages:1408-1414
DOI10.1093/mnras/stt1659
Contribution Rank第1完成单位
Indexed BySCI
KeywordBinaries: Close Binaries: Eclipsing Brown Dwarfs Stars: Individual: Hs 0705+6700 Subdwarfs
Abstract

By using 78 newly determined timings of light minima together with those collected from the literature, we analysed the changes in the observed minus calculated (O-C) diagram in HS 0705+6700, a short-period (2.3 h) eclipsing binary that consists of a very hot subdwarf B-type (sdB) star and a very cool fully convective red dwarf. We confirmed the cyclic variation in the O-C and refined the parameters of the circumbinary brown dwarf (reported to orbit the binary system in 2009) by analysing the changes for the light travel time effect that arises from the gravitational influence of the third body. Our results indicate the lower mass limit of the third body to be M-3 sin i(') = 33.7(+/- 1.6) M-Jup. This companion would be a brown dwarf if its orbital inclination is larger than 27 degrees.7 and it is orbiting the central eclipsing binary with an eccentricity e similar to 0.2 at a separation of about 3.7(+/- 0.1) au.

Funding ProjectChinese Natural Science Foundation through a key project[11133007]
Funding OrganizationChinese Natural Science Foundation through a key project[11133007]
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
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
Archive Date2013-11-19
WOS IDWOS:000327461100038
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordPRE-CATACLYSMIC BINARY ; SUBDWARF-B STARS ; SYSTEM HW VIR ; CIRCUMBINARY PLANETS ; SPECTRAL-ANALYSIS ; NY VIR ; PERIOD ; COMPANION
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5873
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 AuthorQian SB(钱声帮)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, PO Box 110, 650011 Kunming, People's Republic of China
2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, PO Box 110, 650011 Kunming, People's Republic of China
3.University of the Chinese Academy of Sciences, Yuquan Road 19#, Sijingshang Block, 100049 Beijing, People's Republic of China
4.Astronomical Observatory, Jagiellonian University, ul. Orla 171, PL-30-244 Krakow, Poland
5.Mt Suhora Observatory, Pedagogical University, ul. Podchorazych 2, PL-30-084 Krakow, Poland
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Qian SB,Shi G,Zola, S,et al. A search for substellar objects orbiting the sdB eclipsing binary HS 0705+6700[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,436(2):1408-1414.
APA Qian SB.,Shi G.,Zola, S.,Koziel-Wierzbowska, D.,Winiarski, M.,...&Jiang LQ.(2013).A search for substellar objects orbiting the sdB eclipsing binary HS 0705+6700.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,436(2),1408-1414.
MLA Qian SB,et al."A search for substellar objects orbiting the sdB eclipsing binary HS 0705+6700".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 436.2(2013):1408-1414.
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