1SWASP J075102.16+342405.3: A deep overcontact binary system with a period under the short period cut-off

	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
刊名	PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
	2015-12
卷号	67 期号:6
关键词	binaries: close binaries: eclipsing stars: individual (1SWASP J075102.16+342405.3)
ISSN号	0004-6264
通讯作者	Jiang, LQ (reprint author), Sichuan Univ Sci & Engn, Sch Sci, Dept Phys, Zigong 643000, Peoples R China.
产权排序	第2完成单位
英文摘要	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.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	CC-COMAE BERENICES ; CONTACT BINARY ; SDSS J001641-000925 ; ECLIPSING BINARIES ; VELOCITY CURVES ; LIGHT CURVES ; STAR LIGHT ; LIMIT ; MASS ; PARAMETERS
收录类别	SCI
原文出处	http://pasj.oxfordjournals.org/content/67/6/118
语种	英语
WOS记录号	WOS:000366859800018
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/9392]
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
作者单位	1.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
推荐引用方式 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).