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Detection of a planetary system orbiting the eclipsing polar HU Aqr
Qian SB(钱声帮)1,2,3; Liu L(刘亮)1,2,3; Liao WP(廖文萍)1,2; Li LJ(李临甲)1,2,3; Zhu LY(朱俐颖)1,2,3; Dai ZB(戴智斌)1,2; He JJ(何家佳)1,2; Zhao EG(赵二刚)1,2; Zhang J(张嘉)1,2,3; Li K(李凯)1,2,3; Qian, SB (reprint author), Chinese Acad Sci, Yunnan Observ, Natl Astron Observ, POB 110, Kunming 650011, Peoples R China.
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2011-06
Volume414Issue:1Pages:L16-L20
DOI10.1111/j.1745-3933.2011.01045.x
Contribution Rank第1完成单位
Indexed BySCI
KeywordBinaries: Close Binaries: Eclipsing Stars: Individual: Hu Aqr Planetary Systems White Dwarfs
AbstractUsing the precise times of mid-egress of the eclipsing polar HU Aqr, we discovered that this polar is orbited by two or more giant planets. The two planets detected so far have masses of at least 5.9 and 4.5M(Jup). Their respective distances from the polar are 3.6 and 5.4 au with periods of 6.54 and 11.96 yr, respectively. The observed rate of decrease of period derived from the downward parabolic change in the observed - calculated (O - C) curve is a factor of 15 larger than the value expected for gravitational radiation. This indicates that it may be only a part of a long-period cyclic variation, revealing the presence of one more planet. It is interesting to note that the two detected circumbinary planets follow the Titus-Bode law of solar planets with n = 5 and 6. We estimate that another 10 yr of observations will reveal the presence of the predicted third planet.
Funding OrganizationChinese Natural Science Foundation [10973037, 10903026, 11003040] ; National Key Fundamental Research Project [2007CB815406] ; Yunnan Natural Science Foundation [2008CD157] ; West Light Foundation of the Chinese Academy of Sciences
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0035-8711
URL查看原文
Archive Date2011-11-28
WOS IDWOS:000292141600004
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordMAGNETIC BRAKING ; CATACLYSMIC VARIABLES ; WHITE-DWARF ; EVOLUTION ; COMPANION ; AQUARII ; STREAM ; STARS ; FIELD
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5855
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, Yunnan Observ, Natl Astron 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.Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, PO Box 110, 650011 Kunming, China
3.Graduate University of the Chinese Academy of Sciences, Yuquan Road 19, Sijingshang Block, 100049 Beijing, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Qian SB,Liu L,Liao WP,et al. Detection of a planetary system orbiting the eclipsing polar HU Aqr[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2011,414(1):L16-L20.
APA Qian SB.,Liu L.,Liao WP.,Li LJ.,Zhu LY.,...&Qian, SB .(2011).Detection of a planetary system orbiting the eclipsing polar HU Aqr.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,414(1),L16-L20.
MLA Qian SB,et al."Detection of a planetary system orbiting the eclipsing polar HU Aqr".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 414.1(2011):L16-L20.
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