KMT-2018-BLG-0029LB: A VERY LOW MASS-RATIO Spitzer MICROLENS PLANET

doi:10.5303/JKAS.2020.53.1.9

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	KMT-2018-BLG-0029LB: A VERY LOW MASS-RATIO Spitzer MICROLENS PLANET
	Gould, Andrew 1,2; Ryu, Yoon-Hyun 3; Novati, Sebastiano Calchi 4; Zang, Weicheng 5,6; Albrow, Michael D.7; Chung, Sun-Ju 3,8; Han, Cheongho 9; Hwang, Kyu-Ha 3; Jung, Youn Kil 3; Shin, In-Gu 3
刊名	JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY
	2020-02-01
卷号	53 期号:1 页码:9-26
关键词	gravitational lensing: micro planetary systems
ISSN号	1225-4614
DOI	10.5303/JKAS.2020.53.1.9
英文摘要	At q = 1.81 +/- 0.20 x 10 KMT-2018-BLG-0029Lb has the lowest planet-host mass ratio q of any microlensing planet to date by more than a factor of two. Hence, it is the first planet that probes below the apparent "pile-up" at q = 5-10 x 10(-5) The event was observed by Spitzer, yielding a microlens-parallax pi(E) measurement. Combined with a measurement of the Einstein radius theta(E) from finite-source effects during the caustic crossings, these measurements imply masses of the host M-host = 1.14(-0.12)(+0.10) M-circle dot and planet M-planet = 7.59(-0.69)(+0.75) M-circle plus system distance D-L = 3.38(-0.26)(+0.22) kpc and projected separation a(perpendicular to) = 4.27(-0.23)(+0.21) AU. The blended light, which is substantially brighter than the microlensed source, is plausibly due to the lens and could be observed at high resolution immediately.
资助项目	US NSF[AST-1516842] ; JPL grant[1500811] ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC Grant[321035] ; National Research Foundation of Korea[2017R1A4A1015178] ; National Science Foundation of China[11821303] ; National Science Foundation of China[11761131004] ; NASA[NNX14AF63G] ; NASA[NNG16PJ32C] ; Thomas Jefferson Chair for Discovery and Space Exploration ; National Astronomical Observatories of China ; Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance
WOS关键词	GRAVITATIONAL LENSING EXPERIMENT ; JUPITER/SATURN ANALOG ; PHOTOMETRY ; SYSTEMS ; EVENTS ; STARS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	KOREAN ASTRONOMICAL SOCIETY
WOS记录号	WOS:000517825400002
资助机构	US NSF ; US NSF ; JPL grant ; JPL grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC Grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC Grant ; National Research Foundation of Korea ; National Research Foundation of Korea ; National Science Foundation of China ; National Science Foundation of China ; NASA ; NASA ; Thomas Jefferson Chair for Discovery and Space Exploration ; Thomas Jefferson Chair for Discovery and Space Exploration ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; US NSF ; US NSF ; JPL grant ; JPL grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC Grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC Grant ; National Research Foundation of Korea ; National Research Foundation of Korea ; National Science Foundation of China ; National Science Foundation of China ; NASA ; NASA ; Thomas Jefferson Chair for Discovery and Space Exploration ; Thomas Jefferson Chair for Discovery and Space Exploration ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; US NSF ; US NSF ; JPL grant ; JPL grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC Grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC Grant ; National Research Foundation of Korea ; National Research Foundation of Korea ; National Science Foundation of China ; National Science Foundation of China ; NASA ; NASA ; Thomas Jefferson Chair for Discovery and Space Exploration ; Thomas Jefferson Chair for Discovery and Space Exploration ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance ; US NSF ; US NSF ; JPL grant ; JPL grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC Grant ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC Grant ; National Research Foundation of Korea ; National Research Foundation of Korea ; National Science Foundation of China ; National Science Foundation of China ; NASA ; NASA ; Thomas Jefferson Chair for Discovery and Space Exploration ; Thomas Jefferson Chair for Discovery and Space Exploration ; National Astronomical Observatories of China ; National Astronomical Observatories of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; Special Fund for Astronomy from the Ministry of Finance
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/54284]
专题	中国科学院国家天文台
通讯作者	Gould, Andrew
作者单位	1.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany 2.Ohio State Univ, Dept Astron, 140 W 18th Ave, Columbus, OH 43210 USA 3.Korea Astron & Space Sci Inst, Daejon 34055, South Korea 4.CALTECH, IPAC, Mail Code 100-22,1200 E Calif Blvd, Pasadena, CA 91125 USA 5.Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China 6.Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China 7.Univ Canterbury, Dept Phys & Astron, Private Bag 4800, Christchurch 8020, New Zealand 8.Univ Sci & Technol Korea UST Gajeong Ro, Daejeon 34113, South Korea 9.Chungbuk Natl Univ, Dept Phys, Cheongju 28644, South Korea 10.Harvard & Smithsonian, Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
推荐引用方式 GB/T 7714	Gould, Andrew,Ryu, Yoon-Hyun,Novati, Sebastiano Calchi,et al. KMT-2018-BLG-0029LB: A VERY LOW MASS-RATIO Spitzer MICROLENS PLANET[J]. JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY,2020,53(1):9-26.
APA	Gould, Andrew.,Ryu, Yoon-Hyun.,Novati, Sebastiano Calchi.,Zang, Weicheng.,Albrow, Michael D..,...&Mao, Shude.(2020).KMT-2018-BLG-0029LB: A VERY LOW MASS-RATIO Spitzer MICROLENS PLANET.JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY,53(1),9-26.
MLA	Gould, Andrew,et al."KMT-2018-BLG-0029LB: A VERY LOW MASS-RATIO Spitzer MICROLENS PLANET".JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY 53.1(2020):9-26.