NAOC Open IR
OGLE-2019-BLG-0960 Lb: the Smallest Microlensing Planet
Yee, Jennifer C.1; Zang, Weicheng2; Udalski, Andrzej3; Ryu, Yoon-Hyun4; Green, Jonathan5; Hennerley, Steve5; Marmont, Andrew5; Sumi, Takahiro6; Mao, Shude2,7; Gromadzki, Mariusz3; Mroz, Przemek3,8; Skowron, Jan3; Poleski, Radoslaw3; Szymanski, Michal K.3; Soszynski, Igor3; Pietrukowicz, Pawel3; Kozlowski, Szymon3; Ulaczyk, Krzysztof9; Rybicki, Krzysztof A.3; Iwanek, Patryk3; Wrona, Marcin3; Albrow, Michael D.10; Chung, Sun-Ju4,11; Gould, Andrew12,13; Han, Cheongho14; Hwang, Kyu-Ha4; Jung, Youn Kil4; Kim, Hyoun-Woo4; Shin, In-Gu4; Shvartzvald, Yossi15; Cha, Sang-Mok4,16; Kim, Dong-Jin4; Kim, Seung-Lee4,11; Lee, Chung-Uk4,11; Lee, Dong-Joo4; Lee, Yongseok4,16; Park, Byeong-Gon4,11; Pogge, Richard W.13; Bachelet, Etienne17; Christie, Grant18; Hundertmark, Markus P. G.19; Maoz, Dan20; McCormick, Jennie21; Natusch, Tim18,22; Penny, Matthew T.23; Street, Rachel A.17; Tsapras, Yiannis19; Beichman, Charles A.24; Bryden, Geoffery25; Novati, Sebastiano Calchi24; Carey, Sean24; Gaudi, B. Scott13; Henderson, Calen B.24; Johnson, Samson13; Zhu, Wei26; Bond, Ian A.27; Abe, Fumio28; Barry, Richard29; Bennett, David P.29,30; Bhattacharya, Aparna29,30; Donachie, Martin31; Fujii, Hirosane6; Fukui, Akihiko32,33; Hirao, Yuki6; Silva, Stela Ishitani29,34; Itow, Yoshitaka28; Kirikawa, Rintaro6; Kondo, Iona6; Koshimoto, Naoki35,36; Alex Li, Man Cheung31; Matsubara, Yutaka28; Muraki, Yasushi28; Miyazaki, Shota6; Olmschenk, Greg37; Ranc, Clement29; Rattenbury, Nicholas J.31; Satoh, Yuki6; Shoji, Hikaru6; Suzuki, Daisuke38; Tanaka, Yuzuru6; Tristram, Paul J.39; Yamawaki, Tsubasa6; Yonehara, Atsunori40
2021-11-01
Source PublicationASTRONOMICAL JOURNAL
ISSN0004-6256
Volume162Issue:5Pages:22
AbstractWe report the analysis of OGLE-2019-BLG-0960, which contains the smallest mass-ratio microlensing planet found to date (q = 1.2-1.6 x 10(-5) at 1 sigma). Although there is substantial uncertainty in the satellite parallax measured by Spitzer, the measurement of the annual parallax effect combined with the finite source effect allows us to determine the mass of the host star (M-L = 0.3-0.6 M-circle dot), the mass of its planet (m(p) = 1.4-3.1 M-circle plus), the projected separation between the host and planet (a(perpendicular to) = 1.2-2.3 au), and the distance to the lens system (D-L = 0.6-1.2 kpc). The lens is plausibly the blend, which could be checked with adaptive optics observations. As the smallest planet clearly below the break in the mass-ratio function, it demonstrates that current experiments are powerful enough to robustly measure the slope of the mass-ratio function below that break. We find that the cross-section for detecting small planets is maximized for planets with separations just outside of the boundary for resonant caustics and that sensitivity to such planets can be maximized by intensively monitoring events whenever they are magnified by a factor A > 5. Finally, an empirical investigation demonstrates that most planets showing a degeneracy between (s > 1) and (s < 1) solutions are not in the regime (vertical bar log s vertical bar >> 0) for which the "close"/"wide" degeneracy was derived. This investigation suggests that there is a link between the "close"/"wide" and "inner/outer" degeneracies and also that the symmetry in the lens equation goes much deeper than symmetries uncovered for the limiting cases.
Funding OrganizationJPL grant ; JPL grant ; National Science Foundation of China ; National Science Foundation of China ; National Science Centre, Poland ; National Science Centre, Poland ; 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 ; JSPS KAKENHI ; JSPS KAKENHI ; NASA through JPL/Caltech ; NASA through JPL/Caltech ; 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 ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; DFG ; DFG ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory ; JPL grant ; JPL grant ; National Science Foundation of China ; National Science Foundation of China ; National Science Centre, Poland ; National Science Centre, Poland ; 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 ; JSPS KAKENHI ; JSPS KAKENHI ; NASA through JPL/Caltech ; NASA through JPL/Caltech ; 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 ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; DFG ; DFG ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory ; JPL grant ; JPL grant ; National Science Foundation of China ; National Science Foundation of China ; National Science Centre, Poland ; National Science Centre, Poland ; 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 ; JSPS KAKENHI ; JSPS KAKENHI ; NASA through JPL/Caltech ; NASA through JPL/Caltech ; 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 ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; DFG ; DFG ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory ; JPL grant ; JPL grant ; National Science Foundation of China ; National Science Foundation of China ; National Science Centre, Poland ; National Science Centre, Poland ; 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 ; JSPS KAKENHI ; JSPS KAKENHI ; NASA through JPL/Caltech ; NASA through JPL/Caltech ; 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 ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; DFG ; DFG ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory
DOI10.3847/1538-3881/ac1582
WOS KeywordMASS PLANET ; GRAVITATIONAL LENS ; GALACTIC BULGE ; EARTH-MASS ; MILKY-WAY ; PARALLAX ; EVENTS ; DWARF ; PHOTOMETRY ; STARS
Language英语
Funding ProjectJPL grant[1500811] ; JPL grant[1571564] ; National Science Foundation of China[11821303] ; National Science Foundation of China[11761131004] ; National Science Centre, Poland[MAESTRO 2014/14/A/ST9/00121] ; National Astronomical Observatories of China ; Chinese Academy of Sciences ; Special Fund for Astronomy from the Ministry of Finance ; JSPS KAKENHI[JSPS24253004] ; JSPS KAKENHI[JSPS26247023] ; JSPS KAKENHI[JSPS23340064] ; JSPS KAKENHI[JSPS15H00781] ; JSPS KAKENHI[JP16H06287] ; JSPS KAKENHI[JP17H02871] ; NASA through JPL/Caltech ; European Research Council under the European Unions Seventh Framework Programme (FP 7) ERC[321035] ; National Research Foundation of Korea[2019R1A2C2085965] ; National Research Foundation of Korea[2020R1A4A2002885] ; Beatrice and Vincent Tremaine Fellowship at CITA ; DFG[WA 1047/11-1] ; DFG[SPP 1992] ; ESO Telescopes at the La Silla Paranal Observatory[179.B-2002] ; [AST-1516842]
Funding OrganizationJPL grant ; JPL grant ; National Science Foundation of China ; National Science Foundation of China ; National Science Centre, Poland ; National Science Centre, Poland ; 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 ; JSPS KAKENHI ; JSPS KAKENHI ; NASA through JPL/Caltech ; NASA through JPL/Caltech ; 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 ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; DFG ; DFG ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory ; JPL grant ; JPL grant ; National Science Foundation of China ; National Science Foundation of China ; National Science Centre, Poland ; National Science Centre, Poland ; 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 ; JSPS KAKENHI ; JSPS KAKENHI ; NASA through JPL/Caltech ; NASA through JPL/Caltech ; 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 ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; DFG ; DFG ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory ; JPL grant ; JPL grant ; National Science Foundation of China ; National Science Foundation of China ; National Science Centre, Poland ; National Science Centre, Poland ; 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 ; JSPS KAKENHI ; JSPS KAKENHI ; NASA through JPL/Caltech ; NASA through JPL/Caltech ; 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 ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; DFG ; DFG ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory ; JPL grant ; JPL grant ; National Science Foundation of China ; National Science Foundation of China ; National Science Centre, Poland ; National Science Centre, Poland ; 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 ; JSPS KAKENHI ; JSPS KAKENHI ; NASA through JPL/Caltech ; NASA through JPL/Caltech ; 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 ; Beatrice and Vincent Tremaine Fellowship at CITA ; Beatrice and Vincent Tremaine Fellowship at CITA ; DFG ; DFG ; ESO Telescopes at the La Silla Paranal Observatory ; ESO Telescopes at the La Silla Paranal Observatory
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000704145700001
PublisherIOP Publishing Ltd
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/75223
Collection中国科学院国家天文台
Corresponding AuthorYee, Jennifer C.
Affiliation1.Ctr Astrophys Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138 USA
2.Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China
3.Univ Warsaw, Astron Observ, Al Ujazdowskie 4, PL-00478 Warsaw, Poland
4.Korea Astron & Space Sci Inst, Daejon 34055, South Korea
5.Kumeu Observ, Kumeu, New Zealand
6.Osaka Univ, Grad Sch Sci, Dept Earth & Space Sci, Toyonaka, Osaka 5600043, Japan
7.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
8.CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA
9.Univ Warwick, Dept Phys, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands, England
10.Univ Canterbury, Dept Phys & Astron, Private Bag 4800, Christchurch 8020, New Zealand
11.Univ Sci & Technol, UST, 217 Gajeong Ro, Daejeon 34113, South Korea
12.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany
13.Ohio State Univ, Dept Astron, 140 W 18th Ave, Columbus, OH 43210 USA
14.Chungbuk Natl Univ, Dept Phys, Cheongju 28644, South Korea
15.Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-76100 Rehovot, Israel
16.Kyung Hee Univ, Sch Space Res, Yongin 17104, Kyeonggi, South Korea
17.Las Cumbres Observ, 6740 Cortona Dr,Suite 102, Goleta, CA 93117 USA
18.Auckland Observ, Auckland, New Zealand
19.Univ Heidelberg ZAH, Astron Rechen Inst, Zentrum Astron, D-69120 Heidelberg, Germany
20.Tel Aviv Univ, Sch Phys & Astron, IL-6997801 Tel Aviv, Israel
21.Ctr Backyard Astrophys, Farm Cove Observ, Auckland, New Zealand
22.AUT Univ, Inst Radio Astron & Space Res IRASR, Auckland, New Zealand
23.Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA
24.CALTECH, IPAC, Mail Code 100-22,1200 E Calif Blvd, Pasadena, CA 91125 USA
25.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA
26.Univ Toronto, Canadian Inst Theoret Astrophys, 60 St George St, Toronto, ON M5S 3H8, Canada
27.Massey Univ, Inst Nat & Math Sci, Auckland 0745, New Zealand
28.Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi 4648601, Japan
29.NASA, Goddard Space Flight Ctr, Code 667, Greenbelt, MD 20771 USA
30.Univ Maryland, Dept Astron, College Pk, MD 20742 USA
31.Univ Auckland, Dept Phys, Private Bag 92019, Auckland, New Zealand
32.Univ Tokyo, Grad Sch Sci, Dept Earth & Planetary Sci, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan
33.Inst Astrofis Canarias, Via Lactea S-N, E-38205 Tenerife, Spain
34.Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA
35.Univ Tokyo, Grad Sch Sci, Dept Astron, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan
36.Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
37.Univ Space Res Assoc, Columbia, MD 21046 USA
38.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2525210, Japan
39.Univ Canterbury, Mt John Observ, POB 56, Lake Tekapo 8770, New Zealand
40.Kyoto Sangyo Univ, Dept Phys, Fac Sci, Kyoto 6038555, Japan
Recommended Citation
GB/T 7714
Yee, Jennifer C.,Zang, Weicheng,Udalski, Andrzej,et al. OGLE-2019-BLG-0960 Lb: the Smallest Microlensing Planet[J]. ASTRONOMICAL JOURNAL,2021,162(5):22.
APA Yee, Jennifer C..,Zang, Weicheng.,Udalski, Andrzej.,Ryu, Yoon-Hyun.,Green, Jonathan.,...&Yonehara, Atsunori.(2021).OGLE-2019-BLG-0960 Lb: the Smallest Microlensing Planet.ASTRONOMICAL JOURNAL,162(5),22.
MLA Yee, Jennifer C.,et al."OGLE-2019-BLG-0960 Lb: the Smallest Microlensing Planet".ASTRONOMICAL JOURNAL 162.5(2021):22.
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