THE PAN-PACIFIC PLANET SEARCH. VI. GIANT PLANETS ORBITING HD 86950 AND HD 222076

	THE PAN-PACIFIC PLANET SEARCH. VI. GIANT PLANETS ORBITING HD 86950 AND HD 222076
	Wittenmyer, Robert A.1,2; Jones, M. I.3,4; Zhao, Jinglin 2; Marshall, J. P.2; Butler, R. P.5; Tinney, C. G.2; Wang, Liang6 ; Johnson, John Asher 7
刊名	ASTRONOMICAL JOURNAL
	2017-02-01
卷号	153 期号:2
关键词	planetary systems stars: individual(HD 29399, HD 86950, HD 222076) techniques: radial velocities
英文摘要	We report the detection of two new planets orbiting the K giants HD 86950 and HD 222076, based on precise radial velocities obtained with three instruments: AAT/UCLES, FEROS, and CHIRON. HD 86950b has a period of 1270 +/- 57 days at a=2.72 +/- 0.08 AU, and m sin i=3.6 +/- 0.7 M-Jup. HD 222076b has P=871 +/- 19 days at a=1.83 +/- 0.03 AU, and m sin i=1.56 +/- 0.11 M-Jup. These two giant planets are typical of the population of planets known to orbit evolved stars. In addition, we find a high-amplitude periodic velocity signal (K similar to 50 m/s(-1)) in HD 29399, and show that it is due to stellar variability rather than Keplerian reflex motion. We also investigate the relation between planet occurrence and host-star metallicity for the 164-star Pan-Pacific Planet Search sample of evolved stars. In spite of the small sample of PPPS detections, we confirm the trend of increasing planet occurrence as a function of metallicity found by other studies of planets orbiting evolved stars.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	PRECISE RADIAL-VELOCITIES ; SPECTROSCOPIC STELLAR PARAMETERS ; ALL-SKY SURVEY ; EVOLVED STARS ; HOST STAR ; FUNDAMENTAL PARAMETERS ; HABITABLE-ZONE ; MASS STARS ; METALLICITY ; COMPANIONS
收录类别	SCI
语种	英语
WOS记录号	WOS:000405781100001
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/8872]
专题	国家天文台_光学天文研究部
作者单位	1.Univ Southern Queensland, Computat Engn & Sci Res Ctr, Toowoomba, Qld 4350, Australia 2.UNSW Australia, Sch Phys & Australian Ctr Astrobiol, Sydney, NSW 2052, Australia 3.European Southern Observ, Casilla 19001, Santiago, Chile 4.Pontificia Univ Catolica Chile, Ctr Astroengn UC, Av Vicuna Mackenna 4860, Santiago 7820436, Chile 5.Carnegie Inst Sci, Dept Terr Magnetism, 5241 Broad Branch Rd NW, Washington, DC 20015 USA 6.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, A20 Datun Rd, Beijing 100012, Peoples R China 7.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
推荐引用方式 GB/T 7714	Wittenmyer, Robert A.,Jones, M. I.,Zhao, Jinglin,et al. THE PAN-PACIFIC PLANET SEARCH. VI. GIANT PLANETS ORBITING HD 86950 AND HD 222076[J]. ASTRONOMICAL JOURNAL,2017,153(2).
APA	Wittenmyer, Robert A..,Jones, M. I..,Zhao, Jinglin.,Marshall, J. P..,Butler, R. P..,...&Johnson, John Asher.(2017).THE PAN-PACIFIC PLANET SEARCH. VI. GIANT PLANETS ORBITING HD 86950 AND HD 222076.ASTRONOMICAL JOURNAL,153(2).
MLA	Wittenmyer, Robert A.,et al."THE PAN-PACIFIC PLANET SEARCH. VI. GIANT PLANETS ORBITING HD 86950 AND HD 222076".ASTRONOMICAL JOURNAL 153.2(2017).