A possible giant planet orbiting the cataclysmic variable LX Ser

doi:10.1093/pasj/psw134

	A possible giant planet orbiting the cataclysmic variable LX Ser
	Li, Kai1,2 ; Hu, Shaoming 1; Zhou, Jilin 3; Wu, Donghong 3; Guo, Difu 1; Jiang, Yunguo 1; Gao, Dongyang 1; Chen, Xu 1; Wang, Xianyu 1
发表期刊	PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
	2017-04-01
卷号	69 期号:2
DOI	10.1093/pasj/psw134
收录类别	SCI
关键词	binaries: eclipsing novae, cataclysmic variables stars: individual (LX Ser)
摘要	LX Ser is a deeply eclipsing cataclysmic variable with an orbital period of 0.1584325 d. 62 new eclipse times were determined by our observations and the AAVSO International Data base. Combining all available eclipse times, we analyzed the O-C behavior of LX Ser. We found that the O-C diagram of LXSer shows a sinusoidal oscillation with a period of 22.8 yr and an amplitude of 0.00035 d. Two mechanisms (i.e., the Applegate mechanism and the light-travel time effect) are applied to explain the cyclic modulation. We found that it is difficult to apply the Applegate mechanism to explain the cyclic oscillation in the orbital period. Therefore, the cyclic period change is most likely to be caused by the light-travel time effect due to the presence of a third body. The mass of the tertiary component was determined to be M-3 similar to 7.5M(Jup). We supposed that the tertiary companion is plausibly a giant planet. The stability of the giant planet was checked, and we found that the multiple system is stable.
资助项目	National Natural Science Foundation of China[U1431105] ; National Natural Science Foundation of China[11333002] ; Chinese Academy of Sciences[U1431105] ; Natural Science Foundation of Shandong Province[ZR2014AQ019] ; Young Scholars Program of Shandong University, Weihai[2016WHWLJH07] ; Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects[OP201303]
项目资助者	National Natural Science Foundation of China[U1431105, 11333002] ; Chinese Academy of Sciences[U1431105] ; Natural Science Foundation of Shandong Province[ZR2014AQ019] ; Young Scholars Program of Shandong University, Weihai[2016WHWLJH07] ; Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects[OP201303]
语种	英语
学科领域	天文学 ; 恒星与银河系
文章类型	Article
出版者	OXFORD UNIV PRESS
出版地	GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN	0004-6264
URL	查看原文
WOS记录号	WOS:000401118500014
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	STEPANYANS STAR ; CLOSE BINARIES ; PERIOD CHANGES ; NN-SER ; RS CVN ; DWARF ; EVOLUTION ; PHOTOMETRY ; COMPANION ; HERCULIS
引用统计	被引频次：11[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/114a53/10066
专题	中国科学院天体结构与演化重点实验室
通讯作者	Li, Kai
作者单位	1.Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai 264209, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China 3.School of Astronomy and Space Science and Key Laboratory ofModern Astronomy and Astrophysics in Ministry of Education, Nanjing University, Nanjing 210093, China
推荐引用方式 GB/T 7714	Li, Kai,Hu, Shaoming,Zhou, Jilin,et al. A possible giant planet orbiting the cataclysmic variable LX Ser[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2017,69(2).
APA	Li, Kai.,Hu, Shaoming.,Zhou, Jilin.,Wu, Donghong.,Guo, Difu.,...&Wang, Xianyu.(2017).A possible giant planet orbiting the cataclysmic variable LX Ser.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,69(2).
MLA	Li, Kai,et al."A possible giant planet orbiting the cataclysmic variable LX Ser".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 69.2(2017).

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
A possible giant pla（1549KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文