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1SWASP J075102.16+342405.3: A deep overcontact binary system with a period under the short period cut-off
Jiang, LQ1; Qian SB(钱声帮)2,3,4; Zhang J(张嘉)2,3; Liu NP(刘念平)2,3
Source PublicationPUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2015-12
Volume67Issue:6
DOI10.1093/pasj/psv092
Contribution Rank第2完成单位
Indexed BySCI
KeywordBinaries: Close Binaries: Eclipsing Stars: Individual (1swasp j075102.16+342405.3)
Abstract

New photometry of two different seasons for the extremely short period eclipsing binary 1SWASP J075102.16+342405.3 were performed. The two sets of derived light curves show a large difference in their shape, i.e., the 2013 light curves show big asymmetry, whereas the 2014 light curve is almost symmetric. All light curves were analysed using the 2013 version of the Wilson-Devinney (W-D) code. The obtained solutions show that 1SWASP J075102.16+342405.3 is of the A subtype WUMa contact system with an extremely high fill-out of f approximate to 96% and a high mass ratio of 0.70-0.78. Furthermore, a third light contributing to the total flux of the system was found. All these properties make the system a very special short-period source. The analysis of the 2013 light curves proved that the changes in the light curve shape are caused by magnetic activities. By means of all available times of minimum light, the variation of the orbital period was studied. It was found that the O-C diagram implies an increasing orbital period over a time span of eight years, which may be caused by the mass transfer from the less massive component to the more massive one; however, we are more inclined to say that it is only a part of a long period cyclic variation which can be explained by the light-travel time effect (LTTE) via the third body.

Funding ProjectChinese Natural Science Foundation[11133007] ; Chinese Natural Science Foundation[11325315] ; Strategic Priority Research Program "The Emergence of Cosmological Structure" of the Chinese Academy of Sciences[XDB09010202] ; Science Foundation of Yunnan Province[2012HC011]
Funding OrganizationChinese Natural Science Foundation[11133007, 11325315] ; Strategic Priority Research Program "The Emergence of Cosmological Structure" of the Chinese Academy of Sciences[XDB09010202] ; Science Foundation of Yunnan Province[2012HC011]
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
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0004-6264
URL查看原文
WOS IDWOS:000366859800018
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCC-COMAE BERENICES ; CONTACT BINARY ; SDSS J001641-000925 ; ECLIPSING BINARIES ; VELOCITY CURVES ; LIGHT CURVES ; STAR LIGHT ; LIMIT ; MASS ; PARAMETERS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9392
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 AuthorJiang, LQ
Affiliation1.Department of Physics, School of Science, Sichuan University of Science & Engineering, Zigong, 643000, China
2.Yunnan Observatories, Chinese Academy of Sciences, PO Box 110, 650011 Kunming, China
3.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, PO Box 110, 650011 Kunming, China
4.Graduate University of the Chinese Academy of Sciences, Yuquan Road 19, Sijingshang Block, 100049 Beijing City, China
Recommended Citation
GB/T 7714
Jiang, LQ,Qian SB,Zhang J,et al. 1SWASP J075102.16+342405.3: A deep overcontact binary system with a period under the short period cut-off[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2015,67(6).
APA Jiang, LQ,Qian SB,Zhang J,&Liu NP.(2015).1SWASP J075102.16+342405.3: A deep overcontact binary system with a period under the short period cut-off.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,67(6).
MLA Jiang, LQ,et al."1SWASP J075102.16+342405.3: A deep overcontact binary system with a period under the short period cut-off".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 67.6(2015).
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