The Astronomical Journal (Jan 2023)
Systematic KMTNet Planetary Anomaly Search. VII. Complete Sample of q < 10−4 Planets from the First 4 yr Survey
- Weicheng Zang,
- Youn Kil Jung,
- Hongjing Yang,
- Xiangyu Zhang,
- Andrzej Udalski,
- Jennifer C. Yee,
- Andrew Gould,
- Shude Mao,
- Leading Authors,
- Michael D. Albrow,
- Sun-Ju Chung,
- Cheongho Han,
- Kyu-Ha Hwang,
- Yoon-Hyun Ryu,
- In-Gu Shin,
- Yossi Shvartzvald,
- Sang-Mok Cha,
- Dong-Jin Kim,
- Hyoun-Woo Kim,
- Seung-Lee Kim,
- Chung-Uk Lee,
- Dong-Joo Lee,
- Yongseok Lee,
- Byeong-Gon Park,
- Richard W. Pogge,
- The KMTNet Collaboration,
- Przemek Mróz,
- Jan Skowron,
- Radoslaw Poleski,
- Michał K. Szymański,
- Igor Soszyński,
- Paweł Pietrukowicz,
- Szymon Kozłowski,
- Krzysztof Ulaczyk,
- Krzysztof A. Rybicki,
- Patryk Iwanek,
- Marcin Wrona,
- Mariusz Gromadzki,
- The OGLE Collaboration,
- Hanyue Wang,
- Jiyuan Zhang,
- Wei Zhu,
- The MAP Collaboration
Affiliations
- Weicheng Zang
- ORCiD
- Department of Astronomy, Tsinghua University , Beijing 100084, People’s Republic of China ; [email protected]; Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
- Youn Kil Jung
- ORCiD
- Korea Astronomy and Space Science Institute , Daejon 34055, Republic of Korea; University of Science and Technology , Korea, (UST), 217 Gajeong-ro Yuseong-gu, Daejeon 34113, Republic of Korea
- Hongjing Yang
- ORCiD
- Department of Astronomy, Tsinghua University , Beijing 100084, People’s Republic of China ; [email protected]
- Xiangyu Zhang
- Max-Planck-Institute for Astronomy , Königstuhl 17, D-69117 Heidelberg, Germany
- Andrzej Udalski
- ORCiD
- Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, 00-478 Warszawa, Poland
- Jennifer C. Yee
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
- Andrew Gould
- Max-Planck-Institute for Astronomy , Königstuhl 17, D-69117 Heidelberg, Germany; Department of Astronomy, Ohio State University , 140 W. 18th Ave., Columbus, OH 43210, USA
- Shude Mao
- ORCiD
- Department of Astronomy, Tsinghua University , Beijing 100084, People’s Republic of China ; [email protected]; National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101, People’s Republic of China
- Leading Authors
- Michael D. Albrow
- ORCiD
- University of Canterbury , Department of Physics and Astronomy, Private Bag 4800, Christchurch 8020, New Zealand
- Sun-Ju Chung
- ORCiD
- Korea Astronomy and Space Science Institute , Daejon 34055, Republic of Korea; University of Science and Technology , Korea, (UST), 217 Gajeong-ro Yuseong-gu, Daejeon 34113, Republic of Korea
- Cheongho Han
- ORCiD
- Department of Physics, Chungbuk National University , Cheongju 28644, Republic of Korea
- Kyu-Ha Hwang
- ORCiD
- Korea Astronomy and Space Science Institute , Daejon 34055, Republic of Korea
- Yoon-Hyun Ryu
- ORCiD
- Korea Astronomy and Space Science Institute , Daejon 34055, Republic of Korea
- 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
- Sang-Mok Cha
- Korea Astronomy and Space Science Institute , Daejon 34055, Republic of Korea; School of Space Research, Kyung Hee University , Yongin, Kyeonggi 17104, Republic of Korea
- Dong-Jin Kim
- Korea Astronomy and Space Science Institute , Daejon 34055, Republic of Korea
- Hyoun-Woo Kim
- ORCiD
- Korea Astronomy and Space Science Institute , Daejon 34055, Republic of Korea
- Seung-Lee Kim
- ORCiD
- Korea Astronomy and Space Science Institute , Daejon 34055, Republic of Korea; University of Science and Technology , Korea, (UST), 217 Gajeong-ro Yuseong-gu, Daejeon 34113, Republic of Korea
- Chung-Uk Lee
- ORCiD
- Korea Astronomy and Space Science Institute , Daejon 34055, Republic of Korea
- Dong-Joo Lee
- Korea Astronomy and Space Science Institute , Daejon 34055, Republic of Korea
- Yongseok Lee
- Korea Astronomy and Space Science Institute , Daejon 34055, Republic of Korea; School of Space Research, Kyung Hee University , Yongin, Kyeonggi 17104, Republic of Korea
- Byeong-Gon Park
- ORCiD
- Korea Astronomy and Space Science Institute , Daejon 34055, Republic of Korea; 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 Ave., Columbus, OH 43210, USA
- The KMTNet Collaboration
- Przemek Mróz
- ORCiD
- Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, 00-478 Warszawa, Poland
- Jan Skowron
- ORCiD
- Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, 00-478 Warszawa, Poland
- Radoslaw Poleski
- ORCiD
- Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, 00-478 Warszawa, Poland
- Michał K. Szymański
- ORCiD
- Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, 00-478 Warszawa, Poland
- Igor Soszyński
- ORCiD
- Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, 00-478 Warszawa, Poland
- Paweł Pietrukowicz
- ORCiD
- Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, 00-478 Warszawa, Poland
- Szymon Kozłowski
- ORCiD
- Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, 00-478 Warszawa, Poland
- Krzysztof Ulaczyk
- ORCiD
- Department of Physics, University of Warwick , Gibbet Hill Road, Coventry, CV4 7AL, UK
- Krzysztof A. Rybicki
- ORCiD
- Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, 00-478 Warszawa, Poland
- Patryk Iwanek
- ORCiD
- Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, 00-478 Warszawa, Poland
- Marcin Wrona
- ORCiD
- Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, 00-478 Warszawa, Poland
- Mariusz Gromadzki
- ORCiD
- Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, 00-478 Warszawa, Poland
- The OGLE Collaboration
- Hanyue Wang
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
- Jiyuan Zhang
- ORCiD
- Department of Astronomy, Tsinghua University , Beijing 100084, People’s Republic of China ; [email protected]
- Wei Zhu
- ORCiD
- Department of Astronomy, Tsinghua University , Beijing 100084, People’s Republic of China ; [email protected]
- The MAP Collaboration
- DOI
- https://doi.org/10.3847/1538-3881/acb34b
- Journal volume & issue
-
Vol. 165,
no. 3
p. 103
Abstract
We present the analysis of seven microlensing planetary events with planet/host mass ratios q < 10 ^−4 : KMT-2017-BLG-1194, KMT-2017-BLG-0428, KMT-2019-BLG-1806, KMT-2017-BLG-1003, KMT-2019-BLG-1367, OGLE-2017-BLG-1806, and KMT-2016-BLG-1105. They were identified by applying the Korea Microlensing Telescope Network (KMTNet) AnomalyFinder algorithm to 2016–2019 KMTNet events. A Bayesian analysis indicates that all the lens systems consist of a cold super-Earth orbiting an M or K dwarf. Together with 17 previously published and three that will be published elsewhere, AnomalyFinder has found a total of 27 planets that have solutions with q < 10 ^−4 from 2016–2019 KMTNet events, which lays the foundation for the first statistical analysis of the planetary mass-ratio function based on KMTNet data. By reviewing the 27 planets, we find that the missing planetary caustics problem in the KMTNet planetary sample has been solved by AnomalyFinder. We also find a desert of high-magnification planetary signals ( A ≳ 65), and a follow-up project for KMTNet high-magnification events could detect at least two more q < 10 ^−4 planets per year and form an independent statistical sample.
Keywords
