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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
Source PublicationASTRONOMICAL JOURNAL
Volume153Issue:2
AbstractWe 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.
SubtypeArticle
KeywordPlanetary Systems Techniques: Radial Velocities Stars: Individual(Hd 29399 Hd 86950 Hd 222076)
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationFONDECYT(3140607) ; FONDECYT(3140607) ; FONDECYT(3140607) ; FONDECYT(3140607)
DOI10.3847/1538-3881/153/2/51
WOS KeywordPRECISE RADIAL-VELOCITIES ; SPECTROSCOPIC STELLAR PARAMETERS ; ALL-SKY SURVEY ; EVOLVED STARS ; HOST STAR ; FUNDAMENTAL PARAMETERS ; HABITABLE-ZONE ; MASS STARS ; METALLICITY ; COMPANIONS
Indexed BySCI
Language英语
Funding OrganizationFONDECYT(3140607) ; FONDECYT(3140607) ; FONDECYT(3140607) ; FONDECYT(3140607)
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000405781100001
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/8872
Collection光学天文研究部
Affiliation1.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
Recommended Citation
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).
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