The Astronomical Journal (Jan 2023)
OGLE-2019-BLG-1180Lb: Discovery of a Wide-orbit Jupiter-mass Planet around a Late-type Star
- Sun-Ju Chung,
- Andrzej Udalski,
- Jennifer C. Yee,
- Andrew Gould,
- Leading Authors,
- Michael D. Albrow,
- Youn Kil Jung,
- Kyu-Ha Hwang,
- Cheongho Han,
- Yoon-Hyun Ryu,
- In-Gu Shin,
- Yossi Shvartzvald,
- Hongjing Yang,
- Weicheng Zang,
- Sang-Mok Cha,
- Dong-Jin Kim,
- Seung-Lee Kim,
- Chung-Uk Lee,
- Dong-Joo Lee,
- Yongseok Lee,
- Byeong-Gon Park,
- Richard W. Pogge,
- The KMTNet collaboration,
- Radek Poleski,
- Przemek Mróz,
- Jan Skowron,
- Michał K. Szymański,
- Igor Soszyński,
- Paweł Pietrukowicz,
- Szymon Kozłowski,
- Krzysztof Ulaczyk,
- Krzysztof A. Rybicki,
- Patryk Iwanek,
- Marcin Wrona,
- Mariusz Gromadzki,
- The OGLE collaboration
Affiliations
- Sun-Ju Chung
- ORCiD
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-Gu, Daejeon 34055, Republic of Korea ; [email protected]; Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
- Andrzej Udalski
- ORCiD
- Astronomical Observatory, University of Warsaw , AI. Ujazdowskie 4, 00-478 Warszawa, Poland
- Jennifer C. Yee
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
- Andrew Gould
- Department of Astronomy, Ohio State University , 140 W. 18th Avenue, Columbus, OH 43210, USA; Max-Planck-Institute for Astronomy , Königstuhl 17, D-69117 Heidelberg, Germany
- Leading Authors
- Michael D. Albrow
- ORCiD
- Department of Physics and Astronomy, University of Canterbury , Private Bag, 4800 Christchurch, New Zealand
- Youn Kil Jung
- ORCiD
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-Gu, Daejeon 34055, Republic of Korea ; [email protected]; University of Science and Technology , Korea, (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
- Kyu-Ha Hwang
- ORCiD
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-Gu, Daejeon 34055, Republic of Korea ; [email protected]
- Cheongho Han
- ORCiD
- Department of Physics, Chungbuk National University , Cheongju 361-763, Republic of Korea
- Yoon-Hyun Ryu
- ORCiD
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-Gu, Daejeon 34055, Republic of Korea ; [email protected]
- In-Gu Shin
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
- Yossi Shvartzvald
- ORCiD
- Department of Particle Physics and Astrophysics, Weizmann Institute of Science , Rehovot 76100, Israel
- Hongjing Yang
- ORCiD
- Department of Astronomy and Tsinghua Centre for Astrophysics, Tsinghua University , Beijing 100084, People's Republic of China
- Weicheng Zang
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
- Sang-Mok Cha
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-Gu, Daejeon 34055, Republic of Korea ; [email protected]; School of Space Research, Kyung Hee University , Giheung-gu, Yongin, Kyeonggi 17104, Republic of Korea
- Dong-Jin Kim
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-Gu, Daejeon 34055, Republic of Korea ; [email protected]
- Seung-Lee Kim
- ORCiD
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-Gu, Daejeon 34055, Republic of Korea ; [email protected]
- Chung-Uk Lee
- ORCiD
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-Gu, Daejeon 34055, Republic of Korea ; [email protected]
- Dong-Joo Lee
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-Gu, Daejeon 34055, Republic of Korea ; [email protected]
- Yongseok Lee
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-Gu, Daejeon 34055, Republic of Korea ; [email protected]; School of Space Research, Kyung Hee University , Giheung-gu, Yongin, Kyeonggi 17104, Republic of Korea
- Byeong-Gon Park
- ORCiD
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-Gu, Daejeon 34055, Republic of Korea ; [email protected]; University of Science and Technology , Korea, (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
- Richard W. Pogge
- ORCiD
- Department of Astronomy, Ohio State University , 140 W. 18th Avenue, Columbus, OH 43210, USA
- The KMTNet collaboration
- Radek Poleski
- Astronomical Observatory, University of Warsaw , AI. Ujazdowskie 4, 00-478 Warszawa, Poland
- Przemek Mróz
- Astronomical Observatory, University of Warsaw , AI. Ujazdowskie 4, 00-478 Warszawa, Poland
- Jan Skowron
- ORCiD
- Astronomical Observatory, University of Warsaw , AI. Ujazdowskie 4, 00-478 Warszawa, Poland
- Michał K. Szymański
- ORCiD
- Astronomical Observatory, University of Warsaw , AI. Ujazdowskie 4, 00-478 Warszawa, Poland
- Igor Soszyński
- ORCiD
- Astronomical Observatory, University of Warsaw , AI. Ujazdowskie 4, 00-478 Warszawa, Poland
- Paweł Pietrukowicz
- ORCiD
- Astronomical Observatory, University of Warsaw , AI. Ujazdowskie 4, 00-478 Warszawa, Poland
- Szymon Kozłowski
- ORCiD
- Astronomical Observatory, University of Warsaw , AI. Ujazdowskie 4, 00-478 Warszawa, Poland
- Krzysztof Ulaczyk
- ORCiD
- Astronomical Observatory, University of Warsaw , AI. Ujazdowskie 4, 00-478 Warszawa, Poland; Department of Physics, University of Warwick , Gibbet Hill Road, Coventry CV4 7AL, UK
- Krzysztof A. Rybicki
- Astronomical Observatory, University of Warsaw , AI. Ujazdowskie 4, 00-478 Warszawa, Poland; Department of Particle Physics and Astrophysics, Weizmann Institute of Science , Rehovot 76100, Israel
- Patryk Iwanek
- ORCiD
- Astronomical Observatory, University of Warsaw , AI. Ujazdowskie 4, 00-478 Warszawa, Poland
- Marcin Wrona
- ORCiD
- Astronomical Observatory, University of Warsaw , AI. Ujazdowskie 4, 00-478 Warszawa, Poland
- Mariusz Gromadzki
- ORCiD
- Astronomical Observatory, University of Warsaw , AI. Ujazdowskie 4, 00-478 Warszawa, Poland
- The OGLE collaboration
- DOI
- https://doi.org/10.3847/1538-3881/ad0723
- Journal volume & issue
-
Vol. 166,
no. 6
p. 253
Abstract
We report on the discovery and analysis of the planetary microlensing event OGLE-2019-BLG-1180 with a planet-to-star mass ratio q ∼ 0.003. The event OGLE-2019-BLG-1180 has unambiguous cusp-passing and caustic-crossing anomalies, which were caused by a wide planetary caustic with s ≃ 2, where s is the star–planet separation in units of the angular Einstein radius θ _E . Thanks to well-covered anomalies by the Korea Micorolensing Telescope Network (KMTNet), we measure both the angular Einstein radius and the microlens parallax in spite of a relatively short event timescale of t _E = 28 days. However, because of a weak constraint on the parallax, we conduct a Bayesian analysis to estimate the physical lens parameters. We find that the lens system is a super-Jupiter-mass planet of ${M}_{{\rm{p}}}={1.75}_{-0.51}^{+0.53}\,{M}_{{\rm{J}}}$ orbiting a late-type star of ${M}_{{\rm{h}}}={0.55}_{-0.26}^{+0.27}\,{M}_{\odot }$ at a distance ${D}_{{\rm{L}}}={6.1}_{-1.3}^{+0.9}\,\mathrm{kpc}$ . The projected star–planet separation is ${a}_{\perp }={5.19}_{-1.23}^{+0.90}\,\mathrm{au}$ , which means that the planet orbits at about four times the snow line of the host star. Considering the relative lens–source proper motion of μ _rel = 6 mas yr ^−1 , the lens will be separated from the source by 60 mas in 2029. At that time one can measure the lens flux from adaptive optics imaging of Keck or a next-generation 30 m class telescope. OGLE-2019-BLG-1180Lb represents a growing population of wide-orbit planets detected by KMTNet, so we also present a general investigation into prospects for further expanding the sample of such planets.
Keywords
- Exoplanet detection methods
- Gravitational microlensing
- Gravitational microlensing exoplanet detection