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A giant planet in orbit around a magnetic-braking hibernating cataclysmic variable
Qian SB(钱声帮)1,2,3; Liao WP(廖文萍)1,2,3; Zhu LY(朱俐颖)1,2,3; Dai ZB(戴智斌)1,2,3; Liu L(刘亮)1,2,3; He JJ(何家佳)1,2,3; Zhao EG(赵二刚)1,2,3; Li LJ(李临甲)1,2,3; Qian, SB (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2010
Volume401Issue:1Pages:L34-L38
DOI10.1111/j.1745-3933.2009.00780.x
Contribution Rank第1完成单位
Indexed BySCI
KeywordBinaries: Close Binaries: Eclipsing Stars: Individual: Qs Vir Planetary Systems White Dwarf
AbstractDetections of Jupiter-like giant planets in orbit around short-period white dwarf binaries should provide insight into the formation and evolution of circumbinary planets (planets orbiting both components of short-period binaries), as well as into the ultimate fate of planets and the late evolutionary stage of binary stars (e.g. the evolution of the common envelope). However, to date no planets have been detected as companions to such close binaries. Here, we report the discovery of a giant planet orbiting the only known hibernating cataclysmic variable (CV), QS Vir, with a period of 7.86 yr. We analysed the variations of the orbital period of the eclipsing white dwarf-red dwarf binary, and a very small-amplitude cyclic change is found to be superimposed on a long-term period decrease. The period oscillation has the smallest amplitude among close binary stars and can be plausibly interpreted as the light-travel time effect via the presence of a third body. We found that the tertiary component is a giant planet with a mass of similar to 6.4 M(Jupiter) at a distance of similar to 4.2 astronomical units (au) from the binary. The continuous decrease is explained as angular momentum loss via magnetic braking which is driving the evolution of the hibernating CV into a normal cataclysmic binary.
Funding OrganizationChinese Natural Science Foundation [10973037, 10903026, 10778718] ; National Key Fundamental Research Project [2007CB815406] ; Yunnan Natural Science Foundation [2008CD157] ; Special Foundation of President and West Light Foundation of the Chinese Academy of Sciences
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0035-8711
URL查看原文
Archive Date2010-01-26
WOS IDWOS:000272867100008
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordBROWN DWARF COMPANION ; WHITE-DWARFS ; BINARY-SYSTEMS ; STAR ; EVOLUTION ; CONFIRMATION ; SUBSTELLAR ; YOUNG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5844
Collection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
Corresponding AuthorQian, SB (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
Affiliation1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, PO Box 110, 650011 Kunming, China
2.Graduate University of the Chinese Academy of Sciences, Yuquan Road 19, Sijingshang Block, 100049 Beijing, China
3.Laboratory for the Structure and Evolution of Celestial Bodies, Chinese Academy of Sciences, PO Box 110, 650011 Kunming, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Qian SB,Liao WP,Zhu LY,et al. A giant planet in orbit around a magnetic-braking hibernating cataclysmic variable[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2010,401(1):L34-L38.
APA Qian SB.,Liao WP.,Zhu LY.,Dai ZB.,Liu L.,...&Qian, SB .(2010).A giant planet in orbit around a magnetic-braking hibernating cataclysmic variable.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,401(1),L34-L38.
MLA Qian SB,et al."A giant planet in orbit around a magnetic-braking hibernating cataclysmic variable".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 401.1(2010):L34-L38.
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