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http://dx.doi.org/10.5303/JKAS.2022.55.4.123

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

Chung, Sun-Ju (Korea Astronomy and Space Science Institute)
Yee, Jennifer C. (Center for Astrophysics | Harvard & Smithsonian)
Udalski, Andrej (Astronomical Observatory, University of Warsaw)
Gould, Andrew (Department of Astronomy, Ohio State University)
Albrow, Michael D. (Department of Physics and Astronomy, University of Canterbury)
Jung, Youn Kil (Korea Astronomy and Space Science Institute)
Hwang, Kyu-Ha (Korea Astronomy and Space Science Institute)
Han, Cheongho (Department of Physics, Chungbuk National University)
Ryu, Yoon-Hyun (Korea Astronomy and Space Science Institute)
Shin, In-Gu (Center for Astrophysics | Harvard & Smithsonian)
Shvartzvald, Yossi (Department of Particle Physics and Astrophysics, Weizmann Institute of Science)
Zang, Weicheng (Department of Astronomy and Tsinghua Centre for Astrophysics, Tsinghua University)
Cha, Sang-Mok (Korea Astronomy and Space Science Institute)
Kim, Dong-Jin (Korea Astronomy and Space Science Institute)
Kim, Seung-Lee (Korea Astronomy and Space Science Institute)
Lee, Chung-Uk (Korea Astronomy and Space Science Institute)
Lee, Dong-Joo (Korea Astronomy and Space Science Institute)
Lee, Yongseok (Korea Astronomy and Space Science Institute)
Park, Byeong-Gon (Korea Astronomy and Space Science Institute)
Pogge, Richard W. (Department of Astronomy, Ohio State University)
Poleski, Radek (Astronomical Observatory, University of Warsaw)
Mroz, Przemek (Astronomical Observatory, University of Warsaw)
Pietrukowicz, Pawel (Astronomical Observatory, University of Warsaw)
Skowron, Jan (Astronomical Observatory, University of Warsaw)
Szymanski, Michal K. (Astronomical Observatory, University of Warsaw)
Soszynski, Igor (Astronomical Observatory, University of Warsaw)
Kozlowski, Szymon (Astronomical Observatory, University of Warsaw)
Rybicki, Krzysztof A. (Astronomical Observatory, University of Warsaw)
Iwanek, Patryk (Astronomical Observatory, University of Warsaw)
Wrona, Marcin (Astronomical Observatory, University of Warsaw)
Gromadzki, Mariusz (Astronomical Observatory, University of Warsaw)
Ulaczyk, Krzysztof (Department of Physics, University of Warwick)
Publication Information
Journal of The Korean Astronomical Society / v.55, no.4, 2022 , pp. 123-130 More about this Journal
Abstract
We present the analysis of a planetary microlensing event OGLE-2019-BLG-0362 with a shortduration anomaly (~0.4 days) near the peak of the light curve, which is caused by the resonant caustic. The event has a severe degeneracy with ∆𝜒2 = 0.9 between the close and the wide binary lens models both with planet-host mass ratio q ≃ 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^{+0.83}_{-0.58}M_J $ orbiting an M dwarf $M_h=0.42^{+0.34}_{-0.23}M_{\odot}$ at a distance $D_L=5.83^{+1.04}_{-1.55}kpc$. The projected star-planet separation is ${\alpha}_{\bot}= 2.18^{+0.58}_{-0.72}AU$, which indicates that the planet lies beyond the snow line of the host star.
Keywords
gravitational lensing: micro;
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