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KMT-2016-BLG-1397b: KMTNET-only Discovery of a Microlens Giant Planet

文献类型：期刊论文

作者Zang, Weicheng2,3; Hwang, Kyu-Ha4; Kim, Hyoun-Woo4; Gould, Andrew4,5,6; Wang, Tianshu2,3; Zhu, Wei7; Mao, Shude2,3,8,9; Albrow, Michael D.10; Chung, Sun-Ju4,11; Han, Cheongho12
刊名ASTRONOMICAL JOURNAL
出版日期2018-11-01
卷号156期号:5页码:9
关键词gravitational lensing: micro planets and satellites: detection stars: individual (KMT-2016-BLG-1397)
ISSN号0004-6256
DOI10.3847/1538-3881/aae537
英文摘要We report the discovery of a giant planet in the KMT-2016-BLG-1397 microlensing event, which was found by The Korea Microlensing Telescope Network alone. The timescale of this event is t(E) = 40.0 +/- 0.5 days, and the mass ratio between the lens star and its companion is q = 0.016 +/- 0.002. The planetary perturbation in the light curve is a smooth bump, resulting in the classical binary-lens/binary-source (2L1S/1L2S) degeneracy. We measure the V - I color of the (putative) two sources in the 1L2S model, and then effectively rule out the binary-source solution. The finite-source effect is marginally detected. Combined with the limits on the blend flux and the probability distribution of the source size normalized by the Einstein radius rho, a Bayesian analysis yields the lens mass M-L = 0.45(-0.28)(+0.33) M-circle dot, at distance of D-L = 6.60(-1.30)(+1.10) kpc. Thus, the companion is a super-Jupiter of a mass M-p = 7.0(-4.3)(+0.33) M-circle dot, at a projected separation r(perpendicular to) = 5.1(-1.7)(+1.5) au, indicating that the planet is well beyond the snow line of the host star.
WOS关键词GRAVITATIONAL LENSING EXPERIMENT ; BINARY-SOURCE ; MASSIVE PLANET ; GALACTIC BULGE ; STARS ; DWARF ; DEGENERACY ; SYSTEMS ; MASSES ; PERTURBATIONS
资助项目National Science Foundation of China[11333003] ; National Science Foundation of China[11390372] ; National Science Foundation of China[11761131004] ; US NSF[AST-1516842] ; JPL grant[1500811] ; KASI grant[2016-1-832-01] ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC[321035] ; National Research Foundation of Korea[2017R1A4A1015178]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000449182800004
出版者IOP PUBLISHING LTD
资助机构National Science Foundation of China ; National Science Foundation of China ; US NSF ; US NSF ; JPL grant ; JPL grant ; KASI grant ; KASI grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; National Research Foundation of Korea ; National Research Foundation of Korea ; National Science Foundation of China ; National Science Foundation of China ; US NSF ; US NSF ; JPL grant ; JPL grant ; KASI grant ; KASI grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; National Research Foundation of Korea ; National Research Foundation of Korea ; National Science Foundation of China ; National Science Foundation of China ; US NSF ; US NSF ; JPL grant ; JPL grant ; KASI grant ; KASI grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; National Research Foundation of Korea ; National Research Foundation of Korea ; National Science Foundation of China ; National Science Foundation of China ; US NSF ; US NSF ; JPL grant ; JPL grant ; KASI grant ; KASI grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC ; National Research Foundation of Korea ; National Research Foundation of Korea
源URL[http://ir.bao.ac.cn/handle/114a11/23369]  
专题中国科学院国家天文台
通讯作者Zang, Weicheng
作者单位1.Kyung Hee Univ, Sch Space Res, Yongin 17104, South Korea
2.Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China
3.Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China
4.Korea Astron & Space Sci Inst, Daejon 34055, South Korea
5.Ohio State Univ, Dept Astron, 140 W 18th Ave, Columbus, OH 43210 USA
6.Max Planck Inst Astron, Knigstuhl 17, D-69117 Heidelberg, Germany
7.Univ Toronto, Canadian Inst Theoret Astrophys, 60 St George St, Toronto, ON M5S 3H8, Canada
8.Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100012, Peoples R China
9.Univ Manchester, Jodrell Bank Ctr Astrophys, Alan Turing Bldg, Manchester M13 9PL, Lancs, England
10.Univ Canterbury, Dept Phys & Astron, Private Bag 4800, Christchurch 8020, New Zealand
推荐引用方式
GB/T 7714		 Zang, Weicheng,Hwang, Kyu-Ha,Kim, Hyoun-Woo,et al. KMT-2016-BLG-1397b: KMTNET-only Discovery of a Microlens Giant Planet[J]. ASTRONOMICAL JOURNAL,2018,156(5):9.
APA Zang, Weicheng.,Hwang, Kyu-Ha.,Kim, Hyoun-Woo.,Gould, Andrew.,Wang, Tianshu.,...&Pogge, Richard W..(2018).KMT-2016-BLG-1397b: KMTNET-only Discovery of a Microlens Giant Planet.ASTRONOMICAL JOURNAL,156(5),9.
MLA Zang, Weicheng,et al."KMT-2016-BLG-1397b: KMTNET-only Discovery of a Microlens Giant Planet".ASTRONOMICAL JOURNAL 156.5(2018):9.

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来源：国家天文台

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