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First multi-color photometric investigation of the shortest-period semi-detached binary SWASPJ222302.02+195031.8

文献类型:期刊论文

作者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
刊名NEW ASTRONOMY
出版日期2019-04-01
卷号68页码:76-80
ISSN号1384-1076
关键词Close-binaries Eclipsing-binaries Individual (J2223)
DOI10.1016/j.newast.2018.11.001
产权排序第1完成单位
文献子类Article
英文摘要

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.

学科主题天文学 ; 恒星与银河系 ; 恒星物理学
URL标识查看原文
出版地PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
WOS关键词STAR LIGHT
资助项目National Natural Science Foundation of China[11573063] ; National Natural Science Foundation of China[11611530685] ; Key Science Foundation of Yunnan Province[2017FA001]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者ELSEVIER SCIENCE BV
WOS记录号WOS:000454466200010
资助机构National Natural Science Foundation of China[11573063, 11611530685] ; Key Science Foundation of Yunnan Province[2017FA001]
源URL[http://ir.ynao.ac.cn/handle/114a53/18807]  
专题云南天文台_双星与变星研究组
云南天文台_中国科学院天体结构与演化重点实验室
通讯作者Fang XH(方小慧)
作者单位1.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
推荐引用方式
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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来源:云南天文台

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