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1SWASP J200503.05-343726.5: A high mass ratio eclipsing binary near the period limit
Zhang B(张斌)1,2,3; Qian SB(钱声帮)1,2,3; Zejda, Miloslav4; Zhu LY(朱俐颖)1,2,3; Liu NP(刘念平)1,2
Source PublicationNEW ASTRONOMY
2017-07-01
Volume54Pages:52-55
DOI10.1016/j.newast.2017.01.007
Contribution Rank第1完成单位
Indexed BySCI
KeywordBinary Eclipsing Binary Short-period Limit Light Curves
Abstract

First CCD photometric light curves of the eclipsing binary system 1SWASP J200503.05-343726.5 are presented. Our complete light curves in V, R and I bands using the Bessell filter show an out-of-eclipsing distortion, which means that the components of the system may be active. The preliminary photometric solutions with a cool star-spot are derived by using the 2013 version of the Wilson-Devinney (W-D) code. The photometric solutions suggest that 1SWASP J200503.05-343726.5 is a shallow-contact eclipsing binary(f = 9.0%) with a mass ratio of q= 1.0705, which is very high for late-type binary systems near the period limit. The primary component is about 230 K hotter than the secondary component. Based on our new CCD eclipse times, the orbital period change was analyzed. According to 0 C diagram, the orbital period of the 1SWASP 1200503.05-343726.5 shows an increase at a rate of <(P)over dot> = +5.43 x 10(-8) days year(-1). The period increase may be caused by mass transfer from the less massive component to the more massive one. This shallow-contact system may be formed from a detached short-period binary via orbital shrinkage because of dynamical interactions with a third component or by magnetic braking. (C) 2017 Elsevier B.V. All rights reserved.

Funding ProjectChinese Natural Science Foundation[11133007] ; Chinese Natural Science Foundation[11325315] ; Chinese Natural Science Foundation[11203066] ; Strategic Priority Research Program[XDB09010202] ; Science Foundation of Yunnan Province[2012HC011] ; Ministry of Education, Youth and Sports of the Czech Republic[LG15010]
Funding OrganizationChinese Natural Science Foundation[11133007, 11325315, 11203066] ; Strategic Priority Research Program[XDB09010202] ; Science Foundation of Yunnan Province[2012HC011] ; Ministry of Education, Youth and Sports of the Czech Republic[LG15010]
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
PublisherELSEVIER SCIENCE BV
Publication PlacePO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN1384-1076
URL查看原文
Archive Date2017-05-22
WOS IDWOS:000397369300007
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSTAR LIGHT CURVES ; CONTACT BINARY ; RADIAL-VELOCITY ; CLOSE BINARIES ; SYSTEM
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10015
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(张斌)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, PR China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, PR China
3.Graduate University of Chinese Academy of Sciences, Beijing, PR China
4.Department of Theoretical Physics and Astrophysics, Masaryk University, Kotlár̆ská 2, Brno 611 37, Czech Republic
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang B,Qian SB,Zejda, Miloslav,et al. 1SWASP J200503.05-343726.5: A high mass ratio eclipsing binary near the period limit[J]. NEW ASTRONOMY,2017,54:52-55.
APA Zhang B,Qian SB,Zejda, Miloslav,Zhu LY,&Liu NP.(2017).1SWASP J200503.05-343726.5: A high mass ratio eclipsing binary near the period limit.NEW ASTRONOMY,54,52-55.
MLA Zhang B,et al."1SWASP J200503.05-343726.5: A high mass ratio eclipsing binary near the period limit".NEW ASTRONOMY 54(2017):52-55.
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