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Substellar Companions to Evolved Intermediate-Mass Stars: HD 145457 and HD 180314
Sato, Bun'ei1; Omiya, Masashi2; Liu, Yujuan3; Harakawa, Hiroki4; Izumiura, Hideyuki5,6; Kambe, Eiji5; Toyota, Eri7; Murata, Daisuke8; Lee, Byeong-Cheol2,9; Masuda, Seiji10; Takeda, Yoichi6,11; Yoshida, Michitoshi12; Itoh, Yoichi8; Ando, Hiroyasu6,11; Kokubo, Eiichiro6,11; Ida, Shigeru4; Zhao, Gang13; Han, Inwoo2
2010
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
卷号62期号:4页码:1063-1069
摘要We report on the detection of two substellar companions orbiting around evolved intermediate-mass stars by precise Doppler measurements at Subaru Telescope and Okayama Astrophysical Observatory. HD 145457 is a K0 giant with a mass of 1.9 M(circle dot), and has a planet of minimum mass, m(2) sin i = 2.9 M(J), orbiting with a period of P = 176 d and eccentricity of e = 0.11. HD 180314 is also a K0 giant with 2.6 M(circle dot), and hosts a substellar companion of m2 sin i = 22 M(J), which falls in the brown-dwarf mass regime, in an orbit with P = 396 d and e = 0.26. HD 145457b is one of the innermost planets and HD 180314 b is the seventh candidate of a brown-dwarf-mass companion found around evolved intermediate-mass stars.
关键词Stars: Individual (Hd 145457) Stars: Individual (Hd 180314) Stars: Planetary Systems Techniques: Radial Velocities
收录类别SCI
语种英语
WOS记录号WOS:000282485100022
引用统计
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/7750
专题光学天文研究部
作者单位1.Tokyo Inst Technol, Global Edge Inst, Meguro Ku, Tokyo 1528550, Japan
2.Korea Astron & Space Sci Inst, Taejon 305348, South Korea
3.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China
4.Tokyo Inst Technol, Dept Earth & Planetary Sci, Meguro Ku, Tokyo 1528551, Japan
5.Natl Inst Nat Sci, Natl Astron Observ Japan, Okayama Astrophys Observ, Kamogata, Okayama 7190232, Japan
6.Grad Univ Adv Studies, Kanagawa 2400193, Japan
7.Kobe Sci Museum, Chuo Ku, Kobe, Hyogo 6500046, Japan
8.Kobe Univ, Grad Sch Sci, Nada Ku, Kobe, Hyogo 6578501, Japan
9.Kyungpook Natl Univ, Dept Astron & Atmospher Sci, Taegu 702701, South Korea
10.Tokushima Sci Museum, Itano, Tokushima 7790111, Japan
11.Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan
12.Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Hiroshima 7398526, Japan
13.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
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Sato, Bun'ei,Omiya, Masashi,Liu, Yujuan,et al. Substellar Companions to Evolved Intermediate-Mass Stars: HD 145457 and HD 180314[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2010,62(4):1063-1069.
APA Sato, Bun'ei.,Omiya, Masashi.,Liu, Yujuan.,Harakawa, Hiroki.,Izumiura, Hideyuki.,...&Han, Inwoo.(2010).Substellar Companions to Evolved Intermediate-Mass Stars: HD 145457 and HD 180314.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,62(4),1063-1069.
MLA Sato, Bun'ei,et al."Substellar Companions to Evolved Intermediate-Mass Stars: HD 145457 and HD 180314".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 62.4(2010):1063-1069.
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