A photometric study of the short-period eclipsing binary 1SWASP J204932.94-654025.8, showing strong third light

doi:10.1016/j.newast.2019.101324

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	A photometric study of the short-period eclipsing binary 1SWASP J204932.94-654025.8, showing strong third light
	Zhang, Bin 1,2; Qian SB(钱声帮)1,2,3,4,5,6 ; Zejda, Miloslav 7; Wang, Jing-Jing 8; Zhi, Qi-Jun 1,2; Dong, Ai-Jun 1,2; Xie, Wei 1,2; Zhu LY(朱俐颖)3,4,5 ; Jiang, Lin-Qiao 9
发表期刊	NEW ASTRONOMY
	2020-04-01
卷号	76 页码:5
DOI	10.1016/j.newast.2019.101324
产权排序	第3完成单位
收录类别	SCI
关键词	Binary Eclipsing binary Orbital period Light curves
摘要	1SWASP J204932.94-654025.8 (hereafter J2049) is a newly discovered eclipsing binary system with an orbital period of 0.2299103 days. BVRc light curves (LCs) are presented and analyzed by using the 2013 version of the Wilson-Devinney (W-D) program. Because the observed LCs are asymmetric, a hot star-spot was employed on the secondary component during our analysis. We found that 32049 is a W-subtype shallow contact eclipsing binary system with an orbit inclination of 62.69 +/- 0.95 and a mass ratio of q =1.326 +/- 0.056. More importantly, we found the presence of a strong third light, with an average luminosity contribution of 31.3% of the total light. Based on times of the light minima, the orbital period changes of J2049 are studied for the first time, and there is no evidence for any significant dp/dt now. Considering the presence of the third light and the short time span of the eclipse times, more observations are needed in the future.
资助项目	Chinese Natural Science Foundation[U1931101] ; Chinese Natural Science Foundation[11933008] ; Chinese Natural Science Foundation[11573063] ; Chinese Natural Science Foundation[U1731238] ; Chinese Natural Science Foundation[U1831120] ; Chinese Natural Science Foundation[11565010] ; Key Science Foundation of Yunnan Province[2017FA001] ; Special Funds for Theoretical Physics of the National Natural Science Foundation of China[11847102] ; National Natural Science Foundation of China (NSFC)[U1631108] ; National Natural Science Foundation of China (NSFC)[U1831109] ; Chinese Academy of Sciences (CAS)[U1631108] ; Chinese Academy of Sciences (CAS)[U1831109] ; Sichuan University of Science and Engineering[2015RC42] ; Science Foundation of China University of Petroleum-Beijing At Karamay[RCYJ2016B-03-006] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences[OP201708] ; Doctoral Starting up Foundation of Guizhou Normal University[GZNUD [2018] 12] ; Guizhou province's innovation and entrepreneurial project for high-level overseas talents[[2019] 02]
项目资助者	Chinese Natural Science Foundation[U1931101, 11933008, 11573063, U1731238, U1831120, 11565010] ; Key Science Foundation of Yunnan Province[2017FA001] ; Special Funds for Theoretical Physics of the National Natural Science Foundation of China[11847102] ; National Natural Science Foundation of China (NSFC)[U1631108, U1831109] ; Chinese Academy of Sciences (CAS)[U1631108, U1831109] ; Sichuan University of Science and Engineering[2015RC42] ; Science Foundation of China University of Petroleum-Beijing At Karamay[RCYJ2016B-03-006] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences[OP201708] ; Doctoral Starting up Foundation of Guizhou Normal University[GZNUD [2018] 12] ; Guizhou province's innovation and entrepreneurial project for high-level overseas talents[[2019] 02]
语种	英语
学科领域	天文学 ; 恒星与银河系 ; 恒星天文学 ; 恒星形成与演化
文章类型	Article
出版者	ELSEVIER
出版地	RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
ISSN	1384-1076
URL	查看原文
WOS记录号	WOS:000501406300007
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	CONTACT BINARIES ; CLOSE BINARIES ; STARS ; LIMIT ; MASS ; CURVES
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/21846
专题	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
通讯作者	Zhang, Bin
作者单位	1.School of Physics and Electronic Science, Guizhou Normal University, Guiyang 550001, China 2.Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing, Guizhou Normal University, Guiyang 550001, China 3.Yunnan Observatories, Chinese Academy of Sciences (CAS), P. O. Box 110, Kunming 650216, China 4.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P. O. Box 110, Kunming 650216, China 5.University of Chinese Academy of Sciences, Yuquan Road 19#, Sijingshang Block, Beijing 100049, Chin 6.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China 7.Department of Theoretical Physics and Astrophysics, Masaryk University, Kotlářská 2, Brno 611 37, Czech Republic 8.China University of Petroleum-Beijing at Karamay, Anding Road 355, Karamay 834000, China 9.School of Physics and Electronic Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
推荐引用方式 GB/T 7714	Zhang, Bin,Qian SB,Zejda, Miloslav,et al. A photometric study of the short-period eclipsing binary 1SWASP J204932.94-654025.8, showing strong third light[J]. NEW ASTRONOMY,2020,76:5.
APA	Zhang, Bin.,Qian SB.,Zejda, Miloslav.,Wang, Jing-Jing.,Zhi, Qi-Jun.,...&Jiang, Lin-Qiao.(2020).A photometric study of the short-period eclipsing binary 1SWASP J204932.94-654025.8, showing strong third light.NEW ASTRONOMY,76,5.
MLA	Zhang, Bin,et al."A photometric study of the short-period eclipsing binary 1SWASP J204932.94-654025.8, showing strong third light".NEW ASTRONOMY 76(2020):5.

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