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

천문학회지 (Journal of The Korean Astronomical Society)
한국천문학회 (Korean Astronomical Society)
초록

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 Δχ2 = 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 Mp = 3.26+0.83 −0.58 MJ orbiting an M dwarf Mh = 0.42+0.34 −0.23 M⊙ at a distance DL = 5.83+1.04 −1.55 kpc. The projected star-planet separation is a⊥ = 2.18+0.58 −0.72 AU, which indicates that the planet lies beyond the snow line of the host star.

목차
Abstract
1. INTRODUCTION
2. OBSERVATIONS
3. LIGHT CURVE ANALYSIS
    3.1. Binary Lens Model (2L1S)
    3.2. Binary Source Model (1L2S)
4. ANGULAR EINSTEIN RADIUS
5. PHYSICAL LENS PROPERTIES
6. SUMMARY
ACKNOWLEDGMENTS
REFERENCES
저자
  • Sun-Ju Chung(Korea Astronomy and Space Science Institute,Center for Astrophysics | Harvard & Smithsonian,The KMTNet Collaboration) Corresponding Author
  • Jennifer C Yee(Center for Astrophysics | Harvard & Smithsonian,The KMTNet Collaboration)
  • Andrej Udalski(Astronomical Observatory, University of Warsaw,The OGLE Collaboration)
  • Andrew Gould(Department of Astronomy, Ohio State University,Max-Planck-Institute for Astronomy,The KMTNet Collaboration)
  • Michael D Albrow(Department of Physics and Astronomy, University of Canterbury,The KMTNet Collaboration)
  • Youn Kil Jung(Korea Astronomy and Space Science Institute,University of Science and Technology (UST),The KMTNet Collaboration)
  • Kyu-Ha Hwang(Korea Astronomy and Space Science Institute,The KMTNet Collaboration)
  • Cheongho Han(Department of Physics, Chungbuk National University,The KMTNet Collaboration)
  • Yoon-Hyun Ryu(Korea Astronomy and Space Science Institute,The KMTNet Collaboration)
  • In-Gu Shin(Department of Physics, Chungbuk National University,The KMTNet Collaboration)
  • Yossi Shvartzvald(Department of Particle Physics and Astrophysics, Weizmann Institute of Science,The KMTNet Collaboration)
  • Weicheng Zang(Department of Astronomy and Tsinghua Centre for Astrophysics, Tsinghua University,The KMTNet Collaboration)
  • Sang-Mok Cha(Korea Astronomy and Space Science Institute,School of Space Research, Kyung Hee University,The KMTNet Collaboration)
  • Dong-Jin Kim(Korea Astronomy and Space Science Institute,The KMTNet Collaboration)
  • Seung-Lee Kim(Korea Astronomy and Space Science Institute,The KMTNet Collaboration)
  • Chung-Uk Lee(Korea Astronomy and Space Science Institute,The KMTNet Collaboration)
  • Dong-Joo Lee(Korea Astronomy and Space Science Institute,The KMTNet Collaboration)
  • Yongseok Lee(Korea Astronomy and Space Science Institute,School of Space Research, Kyung Hee University,The KMTNet Collaboration)
  • Byeong-Gon Park(Korea Astronomy and Space Science Institute,University of Science and Technology (UST),The KMTNet Collaboration)
  • Richard W Pogge(Department of Astronomy, Ohio State University,The KMTNet Collaboration)
  • Radek Poleski(Astronomical Observatory, University of Warsaw,The OGLE Collaboration)
  • Przemek Mr´oz(Astronomical Observatory, University of Warsaw,The OGLE Collaboration)
  • Pawe l Pietrukowicz(Astronomical Observatory, University of Warsaw,The OGLE Collaboration)
  • Jan Skowron(Astronomical Observatory, University of Warsaw,The OGLE Collaboration)
  • Micha l K Szyma´nski(Astronomical Observatory, University of Warsaw,The OGLE Collaboration)
  • Igor Soszy´nski(Astronomical Observatory, University of Warsaw,The OGLE Collaboration)
  • Szymon Koz lowski(Astronomical Observatory, University of Warsaw,The OGLE Collaboration)
  • Krzysztof A Rybicki(Astronomical Observatory, University of Warsaw,The OGLE Collaboration)
  • Patryk Iwanek(Astronomical Observatory, University of Warsaw,The OGLE Collaboration)
  • Marcin Wrona(Astronomical Observatory, University of Warsaw,The OGLE Collaboration)
  • Mariusz Gromadzki(Astronomical Observatory, University of Warsaw,The OGLE Collaboration)
  • Krzysztof Ulaczyk(Department of Physics, University of Warwick,The OGLE Collaboration)