OGLE-2019-BLG-0362Lb: A SUPER-JOVIAN-MASS PLANET AROUND A LOW-MASS STAR

被引：2

作者：

Chung, Sun-Ju ^{[1
,2
]}

Yee, Jennifer C. ^{[2
]}

Udalski, Andrej ^{[3
]}

Gould, Andrew ^{[4
,5
]}

Albrow, Michael D. ^{[6
]}

Jung, Youn Kil ^{[1
,7
]}

Hwang, Kyu-Ha ^{[1
]}

Han, Cheongho ^{[8
]}

Ryu, Yoon-Hyun ^{[1
]}

Shin, In-Gu ^{[2
,8
]}

Shvartzvald, Yossi ^{[9
]}

Zang, Weicheng ^{[10
,11
]}

Cha, Sang-Mok ^{[1
,12
]}

Kim, Dong-Jin ^{[1
]}

Kim, Seung-Lee ^{[1
]}

Lee, Chung-Uk ^{[1
]}

Lee, Dong-Joo ^{[1
]}

Lee, Yongseok ^{[1
,12
]}

Park, Byeong-Gon ^{[1
,7
]}

Pogge, Richard W. ^{[4
]}

Poleski, Radek ^{[3
]}

Mroz, Przemek ^{[3
]}

Pietrukowicz, Pawel ^{[3
]}

Skowron, Jan ^{[3
]}

Szymanski, Michal K. ^{[3
]}

Soszynski, Igor ^{[3
]}

Kozlowski, Szymon ^{[3
]}

Rybicki, Krzysztof A. ^{[3
]}

Iwamek, Patryk ^{[3
]}

Wrona, Marcin ^{[3
]}

Gromadzki, Mariusz ^{[3
]}

Ulaczyk, Krzysztof ^{[13
]}

机构：

[1] Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea

[2] Ctr Astrophys Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138 USA

[3] Univ Warsaw, Astron Observ, AI Ujazdowskie 4, PL-00478 Warsaw, Poland

[4] Ohio State Univ, Dept Astron, 140 W 18th Ave, Columbus, OH 43210 USA

[5] Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany

[6] Univ Canterbury, Dept Phys & Astron, Private Bag 4800, Christchurch, New Zealand

[7] UST, 217 Gajeong Ro, Daejeon 34113, South Korea

[8] Chungbuk Natl Univ, Dept Phys, Cheongju 361763, South Korea

[9] Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-76100 Rehovot, Israel

[10] Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China

[11] Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China

[12] Kyung Hee Univ, Sch Space Res, Yongin 17104, Gyeonggi Do, South Korea

[13] Univ Warwick, Dept Phys, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands, England

来源：

JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY | 2022年 / 55卷 / 04期

关键词：

gravitational lensing; micro; MICROLENSING EVENTS; BINARY-SOURCE; SEARCH; KMTNET; PHOTOMETRY; FREQUENCY; NETWORK; SYSTEMS;

D O I：

10.5303/JKAS.2022.55.4.123

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the analysis of a planetary microlensing event OGLE-2019-BLG-0362 with a short -duration anomaly (similar to 0.4 days) near the peak of the light curve, which is caused by the resonant caustic. The event has a severe degeneracy with Delta chi(2) = 0.9 between the close and the wide binary lens models both with planet-host mass ratio q similar or equal to 0.007. We measure the angular Einstein radius but not the microlens parallax, and thus we perform a Bayesian analysis to estimate the physical parameters of the lens. We find that the OGLE-2019-BLG-0362L system is a super-Jovian-mass planet M-p = 3.26(0.58)(+0.83) M-J orbiting an M dwarf M-h = 0.42(+0.34) (-0.23) M-circle dot at a distance DL = 5.83(+1.04) (-1.55) kpc. The projected star-planet separation is a(perpendicular to) = 2.18(-0.72)(+0.58) AU, which indicates that the lies the snow line of the host star.

引用

页码：123 / 130

页数：8

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