A possible giant planet orbiting the cataclysmic variable LX Ser
Li, Kai1,2; Hu, Shaoming1; Zhou, Jilin3; Wu, Donghong3; Guo, Difu1; Jiang, Yunguo1; Gao, Dongyang1; Chen, Xu1; Wang, Xianyu1; Li, Kai(Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China)
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2017-04-01
卷号69期号:2
DOI10.1093/pasj/psw134
收录类别SCI
关键词Binaries: Eclipsing Stars: Individual (Lx Ser) Novae Cataclysmic Variables
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.
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
文章类型Article
ISSN0004-6264
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
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被引频次:1[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(Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China)
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
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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.,...&Li, Kai.(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).
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