干旱区生态环境知识资源中心(Arid): A Massive Substellar Companion to the Massive Giant HD 119445

Arid

DOI	10.1093/pasj/61.4.825
	A Massive Substellar Companion to the Massive Giant HD 119445
	Omiya, Masashi 1; Izumiura, Hideyuki 2,3; Han, Inwoo 4; Lee, Byeong-Cheol 4,5; Sato, Bun’ei 6; Kambe, Eiji 2; Kim, Kang-Min 4; Yoon, Tae Seog 5; Yoshida, Michitoshi 2; Masuda, Seiji 7; Toyota, Eri 8; Urakawa, Seitaro 9; Takada-Hidai, Masahide 10
通讯作者	Omiya, Masashi
来源期刊	PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
ISSN	0004-6264
EISSN	2053-051X
出版年	2009
卷号	61 期号:4 页码:825-831
英文摘要	We detected a brown dwarf-mass companion around the intermediate-mass giant star HD 119445 (G6111) using the Doppler technique. This discovery is the first result from a Korean-Japanese planet search program based on precise radial velocity measurements. The radial velocity of this star exhibits a periodic Keplerian variation with a period, semiamplitude, and eccentricity of 410.2 d, 413.5 m s(-1), and 0.082, respectively. Adopting a stellar mass of 3.9 M-circle dot, we were able to confirm the presence of a massive substellar companion with a semimajor axis of 1.71 AU and a minimum mass of 37.6 M-J, which falls in the middle of the brown dwarf-mass region. This substellar companion is the most massive ever discovered within 3 AU of a central intermediate-mass star. The host star also ranks among the most massive stars with substellar companions ever detected by the Doppler technique. This result supports the current view of substellar systems that more massive substellar companions tend to exist around more massive stars, and may further constrain substellar system formation mechanisms.
英文关键词	stars: individual (HD 119445) star: low-mass, brown dwarfs techniques: radial velocities
类型	Article
语种	英语
国家	Japan ; South Korea
收录类别	SCI-E
WOS记录号	WOS:000271364000026
WOS关键词	BROWN DWARF DESERT ; PLANETARY COMPANION ; EXTRASOLAR PLANETS ; RADIAL-VELOCITIES ; DISC FRAGMENTATION ; EVOLVED STARS ; OKAYAMA HIDES ; IODINE CELLS ; SUBARU HDS ; CANDIDATE
WOS类目	Astronomy & Astrophysics
WOS研究方向	Astronomy & Astrophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/162340
作者单位	1.Tokai Univ, Dept Phys, Kanagawa 2591292, Japan; 2.Natl Astron Observ Japan, Okayama Astrophys Observ, Kamogatacho, Okayama 7190232, Japan; 3.Grad Univ Adv Studies, Dept Astron Sci, Mitaka, Tokyo 1818588, Japan; 4.Korea Astron & Space Sci Inst, Taejon 305348, South Korea; 5.Kyungpook Natl Univ, Dept Astron & Atmospher Sci, Taegu 702701, South Korea; 6.Tokyo Inst Technol, Global Edge Inst, Meguro Ku, Tokyo 1528550, Japan; 7.Asutamu Land Tokushima, Tokushima Sci Museum, Tokushima 7790111, Japan; 8.Kobe Sci Museum, Chuo Ku, Kobe, Hyogo 6500046, Japan; 9.Japan Spaceguard Assoc, Bisei Spaceguard Ctr, Okayama 7141411, Japan; 10.Tokai Univ, Liberal Arts Educ Ctr, Kanagawa 2591292, Japan
推荐引用方式 GB/T 7714	Omiya, Masashi,Izumiura, Hideyuki,Han, Inwoo,et al. A Massive Substellar Companion to the Massive Giant HD 119445[J],2009,61(4):825-831.
APA	Omiya, Masashi.,Izumiura, Hideyuki.,Han, Inwoo.,Lee, Byeong-Cheol.,Sato, Bun’ei.,...&Takada-Hidai, Masahide.(2009).A Massive Substellar Companion to the Massive Giant HD 119445.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,61(4),825-831.
MLA	Omiya, Masashi,et al."A Massive Substellar Companion to the Massive Giant HD 119445".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 61.4(2009):825-831.