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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, Jinglin2; Marshall, J. P.2; Butler, R. P.5; Tinney, C. G.2; Wang, Liang6; Johnson, John Asher7
2017-02-01
发表期刊ASTRONOMICAL JOURNAL
卷号153期号:2
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.
文章类型Article
关键词Planetary Systems Techniques: Radial Velocities Stars: Individual(Hd 29399 Hd 86950 Hd 222076)
WOS标题词Science & Technology ; Physical Sciences
资助者FONDECYT(3140607) ; FONDECYT(3140607) ; FONDECYT(3140607) ; FONDECYT(3140607)
DOI10.3847/1538-3881/153/2/51
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
资助者FONDECYT(3140607) ; FONDECYT(3140607) ; FONDECYT(3140607) ; FONDECYT(3140607)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000405781100001
引用统计
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8872
专题光学天文研究部
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
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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).
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