The Astronomical Journal (Jan 2024)
Systematic KMTNet Planetary Anomaly Search. XI. Complete Sample of 2016 Subprime Field Planets
- In-Gu Shin,
- Jennifer C. Yee,
- Weicheng Zang,
- Cheongho Han,
- Hongjing Yang,
- Andrew Gould,
- Chung-Uk Lee,
- Andrzej Udalski,
- Takahiro Sumi,
- Leading authors,
- Michael D. Albrow,
- Sun-Ju Chung,
- Kyu-Ha Hwang,
- Youn Kil Jung,
- Yoon-Hyun Ryu,
- Yossi Shvartzvald,
- Sang-Mok Cha,
- Dong-Jin Kim,
- Hyoun-Woo Kim,
- Seung-Lee Kim,
- Dong-Joo Lee,
- Yongseok Lee,
- Byeong-Gon Park,
- Richard W. Pogge,
- The KMTNet Collaboration,
- Przemek Mróz,
- Michał K. Szymański,
- Jan Skowron,
- Radosław Poleski,
- Igor Soszyński,
- Paweł Pietrukowicz,
- Szymon Kozłowski,
- Krzysztof A. Rybicki,
- Patryk Iwanek,
- Krzysztof Ulaczyk,
- Marcin Wrona,
- Mariusz Gromadzki,
- The OGLE Collaboration,
- Fumio Abe,
- Ken Bando,
- Richard Barry,
- David P. Bennett,
- Aparna Bhattacharya,
- Ian A. Bond,
- Hirosane Fujii,
- Akihiko Fukui,
- Ryusei Hamada,
- Shunya Hamada,
- Naoto Hamasaki,
- Yuki Hirao,
- Stela Ishitani Silva,
- Yoshitaka Itow,
- Rintaro Kirikawa,
- Naoki Koshimoto,
- Yutaka Matsubara,
- Shota Miyazaki,
- Yasushi Muraki,
- Tutumi Nagai,
- Kansuke Nunota,
- Greg Olmschenk,
- Clément Ranc,
- Nicholas J. Rattenbury,
- Yuki Satoh,
- Daisuke Suzuki,
- Mio Tomoyoshi,
- Paul. J. Tristram,
- Aikaterini Vandorou,
- Hibiki Yama,
- Kansuke Yamashita,
- The MOA Collaboration
Affiliations
- In-Gu Shin
- ORCiD
- Center for Astrophysics, Center for Astrophysics | Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
- Jennifer C. Yee
- ORCiD
- Center for Astrophysics, Center for Astrophysics | Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
- Weicheng Zang
- ORCiD
- Center for Astrophysics, Center for Astrophysics | Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA; Department of Astronomy, Tsinghua University , Beijing 100084, People's Republic of China
- Cheongho Han
- ORCiD
- Department of Physics, Chungbuk National University , Cheongju 28644, Republic of Korea
- Hongjing Yang
- ORCiD
- Department of Astronomy, Tsinghua University , Beijing 100084, People's Republic of China
- Andrew Gould
- Max Planck Institute for Astronomy , Königstuhl 17, D-69117 Heidelberg, Germany; Department of Astronomy, The Ohio State University , 140 W. 18th Avenue, Columbus, OH 43210, USA
- Chung-Uk Lee
- ORCiD
- Korea Astronomy and Space Science Institute , Daejeon 34055, Republic of Korea
- Andrzej Udalski
- ORCiD
- Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, 00-478 Warszawa, Poland
- Takahiro Sumi
- ORCiD
- Department of Earth and Space Science, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan
- 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 , Daejeon 34055, Republic of Korea
- Kyu-Ha Hwang
- Korea Astronomy and Space Science Institute , Daejeon 34055, Republic of Korea
- Youn Kil Jung
- Korea Astronomy and Space Science Institute , Daejeon 34055, Republic of Korea; Korea University of Science and Technology (UST) , 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
- Yoon-Hyun Ryu
- Korea Astronomy and Space Science Institute , Daejeon 34055, Republic of Korea
- 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 , Daejeon 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 , Daejeon 34055, Republic of Korea
- Hyoun-Woo Kim
- Korea Astronomy and Space Science Institute , Daejeon 34055, Republic of Korea
- Seung-Lee Kim
- Korea Astronomy and Space Science Institute , Daejeon 34055, Republic of Korea
- Dong-Joo Lee
- Korea Astronomy and Space Science Institute , Daejeon 34055, Republic of Korea
- Yongseok Lee
- Korea Astronomy and Space Science Institute , Daejeon 34055, Republic of Korea; School of Space Research, Kyung Hee University , Yongin, Kyeonggi 17104, Republic of Korea
- Byeong-Gon Park
- Korea Astronomy and Space Science Institute , Daejeon 34055, Republic of Korea
- Richard W. Pogge
- Department of Astronomy, The Ohio State University , 140 W. 18th Avenue, Columbus, OH 43210, USA
- The KMTNet Collaboration
- Przemek Mróz
- 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
- Jan Skowron
- ORCiD
- Astronomical Observatory, University of Warsaw , Al. Ujazdowskie 4, 00-478 Warszawa, Poland
- Radosław Poleski
- 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 A. Rybicki
- ORCiD
- Astronomical Observatory, University of Warsaw , Al. 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 , Al. Ujazdowskie 4, 00-478 Warszawa, Poland
- Krzysztof Ulaczyk
- ORCiD
- Department of Physics, University of Warwick , Gibbet Hill Road, Coventry, CV4 7AL, UK
- 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
- Fumio Abe
- Institute for Space-Earth Environmental Research, Nagoya University , Nagoya 464-8601, Japan
- Ken Bando
- Department of Earth and Space Science, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan
- Richard Barry
- Code 667, NASA Goddard Space Flight Center , Greenbelt, MD 20771, USA
- David P. Bennett
- ORCiD
- Code 667, NASA Goddard Space Flight Center , Greenbelt, MD 20771, USA; Department of Astronomy, University of Maryland , College Park, MD 20742, USA
- Aparna Bhattacharya
- Code 667, NASA Goddard Space Flight Center , Greenbelt, MD 20771, USA; Department of Astronomy, University of Maryland , College Park, MD 20742, USA
- Ian A. Bond
- Institute of Natural and Mathematical Sciences, Massey University , Auckland 0745, New Zealand
- Hirosane Fujii
- Institute for Space-Earth Environmental Research, Nagoya University , Nagoya 464-8601, Japan
- Akihiko Fukui
- ORCiD
- Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Instituto de Astrofísica de Canarias , Vía Láctea s/n, E-38205 La Laguna, Tenerife, Spain
- Ryusei Hamada
- Department of Earth and Space Science, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan
- Shunya Hamada
- Department of Earth and Space Science, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan
- Naoto Hamasaki
- Department of Earth and Space Science, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan
- Yuki Hirao
- ORCiD
- Institute of Astronomy, Graduate School of Science, The University of Tokyo , 2-21-1 Osawa, Mitaka, Tokyo 181-0015, Japan
- Stela Ishitani Silva
- Code 667, NASA Goddard Space Flight Center , Greenbelt, MD 20771, USA; Department of Physics, The Catholic University of America , Washington, DC 20064, USA
- Yoshitaka Itow
- ORCiD
- Institute for Space-Earth Environmental Research, Nagoya University , Nagoya 464-8601, Japan
- Rintaro Kirikawa
- Department of Earth and Space Science, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan
- Naoki Koshimoto
- ORCiD
- Department of Earth and Space Science, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan
- Yutaka Matsubara
- ORCiD
- Institute for Space-Earth Environmental Research, Nagoya University , Nagoya 464-8601, Japan
- Shota Miyazaki
- ORCiD
- Institute of Space and Astronautical Science , Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa 252-5210, Japan
- Yasushi Muraki
- ORCiD
- Institute for Space-Earth Environmental Research, Nagoya University , Nagoya 464-8601, Japan
- Tutumi Nagai
- Department of Earth and Space Science, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan
- Kansuke Nunota
- ORCiD
- Department of Earth and Space Science, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan
- Greg Olmschenk
- ORCiD
- Code 667, NASA Goddard Space Flight Center , Greenbelt, MD 20771, USA
- Clément Ranc
- Sorbonne Université , CNRS, UMR 7095, Institut d’Astrophysique de Paris, 98 bis bd Arago, 75014 Paris, France
- Nicholas J. Rattenbury
- Department of Physics, University of Auckland , Private Bag 92019, Auckland, New Zealand
- Yuki Satoh
- ORCiD
- Department of Earth and Space Science, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan
- Daisuke Suzuki
- ORCiD
- Department of Earth and Space Science, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan
- Mio Tomoyoshi
- Department of Earth and Space Science, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan
- Paul. J. Tristram
- University of Canterbury Mt. John Observatory , P.O. Box 56, Lake Tekapo 8770, New Zealand
- Aikaterini Vandorou
- Code 667, NASA Goddard Space Flight Center , Greenbelt, MD 20771, USA; Department of Astronomy, University of Maryland , College Park, MD 20742, USA
- Hibiki Yama
- Department of Earth and Space Science, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan
- Kansuke Yamashita
- Department of Earth and Space Science, Graduate School of Science, Osaka University , Toyonaka, Osaka 560-0043, Japan
- The MOA Collaboration
- DOI
- https://doi.org/10.3847/1538-3881/ad3ba3
- Journal volume & issue
-
Vol. 167,
no. 6
p. 269
Abstract
Following Shin et al. (2023b), which is a part of the “Systematic KMTNet Planetary Anomaly Search” series (i.e., a search for planets in the 2016 KMTNet prime fields), we conduct a systematic search of the 2016 KMTNet subprime fields using a semi-machine-based algorithm to identify hidden anomalous events missed by the conventional by-eye search. We find four new planets and seven planet candidates that were buried in the KMTNet archive. The new planets are OGLE-2016-BLG-1598Lb, OGLE-2016-BLG-1800Lb, MOA-2016-BLG-526Lb, and KMT-2016-BLG-2321Lb, which show typical properties of microlensing planets, i.e., giant planets orbit M-dwarf host stars beyond their snow lines. For the planet candidates, we find planet/binary or 2L1S/1L2S degeneracies, which are an obstacle to firmly claiming planet detections. By combining the results of Shin et al. (2023b) and this work, we find a total of nine hidden planets, which is about half the number of planets discovered by eye in 2016. With this work, we have met the goal of the systematic search series for 2016, which is to build a complete microlensing planet sample. We also show that our systematic searches significantly contribute to completing the planet sample, especially for planet/host mass ratios smaller than 10 ^−3 , which were incomplete in previous by-eye searches of the KMTNet archive.
Keywords
