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First multi-color photometric investigation of the shortest-period semi-detached binary SWASPJ222302.02+195031.8
Fang XH(方小慧)1,2,3; Qian SB(钱声帮)1,2,3,4; Zhu LY(朱俐颖)1,2,3,4; Xu HS(徐虎山)1,2,3
Source PublicationNEW ASTRONOMY
2019-04-01
Volume68Pages:76-80
DOI10.1016/j.newast.2018.11.001
Contribution Rank第1完成单位
Indexed BySCI
KeywordClose-binaries Eclipsing-binaries Individual (J2223)
Abstract

SuperWASPJ222302.02 + 195031.8 is an eclipsing binary with an orbital period about 0.22517657 days that is close to the short-period limit of contact binaries. Multi-color photometric light curves of the short-period binary in B, V, R-c, and I-c, bands are presented and analyzed by using the Wilson-Devinney (W-D) method. It is discovered that the system is a semi-detached binary where the secondary component is already filling the critical Roche lobe, while the primary is filling just 77.1% of its Roche lobe. The temperature of the primary is about 4300 K, and the temperature difference between the two components is about 500 K. The asymmetries in the light curves are explained by the coverage of stellar dark spots on the less massive component via magnetic activity. An analysis of all available eclipse times suggests that there are no any changes in the O-C diagram. This may indicate that there are no mass transfers between the two components. The semi-detached configuration with the dark spot on the surface of the lobe-filling secondary and no variations in the orbital period make the binary an interesting target for further investigations.

Funding ProjectNational Natural Science Foundation of China[11573063] ; National Natural Science Foundation of China[11611530685] ; Key Science Foundation of Yunnan Province[2017FA001]
Funding OrganizationNational Natural Science Foundation of China[11573063, 11611530685] ; Key Science Foundation of Yunnan Province[2017FA001]
Language英语
Subject Area天文学 ; 恒星与银河系 ; 恒星物理学
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
WOS IDWOS:000454466200010
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSTAR LIGHT
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/18807
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 AuthorFang XH(方小慧)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences (CAS), Kunming, P. O. Box 110, 650216, China
2.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, P. O. Box 110, 650216, China
3.University of Chinese Academy of Sciences, Yuquan Road 19#, Sijingshang Block, Beijing 100049, China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, PR China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Fang XH,Qian SB,Zhu LY,et al. First multi-color photometric investigation of the shortest-period semi-detached binary SWASPJ222302.02+195031.8[J]. NEW ASTRONOMY,2019,68:76-80.
APA Fang XH,Qian SB,Zhu LY,&Xu HS.(2019).First multi-color photometric investigation of the shortest-period semi-detached binary SWASPJ222302.02+195031.8.NEW ASTRONOMY,68,76-80.
MLA Fang XH,et al."First multi-color photometric investigation of the shortest-period semi-detached binary SWASPJ222302.02+195031.8".NEW ASTRONOMY 68(2019):76-80.
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