Systematic KMTNet Planetary Anomaly Search. XI. Complete Sample of 2016 Sub-Prime Field Planets
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2024
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| author | Shin, In-Gu Yee, Jennifer C. Zang, Weicheng Han, Cheongho Yang, Hongjing Gould, Andrew Lee, Chung-Uk Udalski, Andrzej Sumi, Takahiro Albrow, Michael D. Chung, Sun-Ju Hwang, Kyu-Ha Jung, Youn Kil Ryu, Yoon-Hyun Shvartzvald, Yossi Cha, Sang-Mok Kim, Dong-Jin Kim, Hyoun-Woo Kim, Seung-Lee Lee, Dong-Joo Lee, Yongseok Park, Byeong-Gon Pogge, Richard W. Mróz, Przemek Szymański, Michał K. Skowron, Jan Poleski, Radosław Soszyński, Igor Pietrukowicz, Paweł Kozłowski, Szymon Rybicki, Krzysztof A. Iwanek, Patryk Ulaczyk, Krzysztof Wrona, Marcin Gromadzki, Mariusz Abe, Fumio Bando, Ken Barry, Richard Bennett, David P. Bhattacharya, Aparna Bond, Ian A. Fujii, Hirosane Fukui, Akihiko Hamada, Ryusei Hamada, Shunya Hamasaki, Naoto Hirao, Yuki Silva, Stela Ishitani Itow, Yoshitaka Kirikawa, Rintaro Koshimoto, Naoki Matsubara, Yutaka Miyazaki, Shota Muraki, Yasushi Nagai, Tutumi Nunota, Kansuke Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas J. Satoh, Yuki Suzuki, Daisuke Tomoyoshi, Mio Tristram, Paul . J. Vandorou, Aikaterini Yama, Hibiki Yamashita, Kansuke |
| author_facet | Shin, In-Gu Yee, Jennifer C. Zang, Weicheng Han, Cheongho Yang, Hongjing Gould, Andrew Lee, Chung-Uk Udalski, Andrzej Sumi, Takahiro Albrow, Michael D. Chung, Sun-Ju Hwang, Kyu-Ha Jung, Youn Kil Ryu, Yoon-Hyun Shvartzvald, Yossi Cha, Sang-Mok Kim, Dong-Jin Kim, Hyoun-Woo Kim, Seung-Lee Lee, Dong-Joo Lee, Yongseok Park, Byeong-Gon Pogge, Richard W. Mróz, Przemek Szymański, Michał K. Skowron, Jan Poleski, Radosław Soszyński, Igor Pietrukowicz, Paweł Kozłowski, Szymon Rybicki, Krzysztof A. Iwanek, Patryk Ulaczyk, Krzysztof Wrona, Marcin Gromadzki, Mariusz Abe, Fumio Bando, Ken Barry, Richard Bennett, David P. Bhattacharya, Aparna Bond, Ian A. Fujii, Hirosane Fukui, Akihiko Hamada, Ryusei Hamada, Shunya Hamasaki, Naoto Hirao, Yuki Silva, Stela Ishitani Itow, Yoshitaka Kirikawa, Rintaro Koshimoto, Naoki Matsubara, Yutaka Miyazaki, Shota Muraki, Yasushi Nagai, Tutumi Nunota, Kansuke Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas J. Satoh, Yuki Suzuki, Daisuke Tomoyoshi, Mio Tristram, Paul . J. Vandorou, Aikaterini Yama, Hibiki Yamashita, Kansuke |
| contents | 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 sub-prime 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_04256 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Systematic KMTNet Planetary Anomaly Search. XI. Complete Sample of 2016 Sub-Prime Field Planets Shin, In-Gu Yee, Jennifer C. Zang, Weicheng Han, Cheongho Yang, Hongjing Gould, Andrew Lee, Chung-Uk Udalski, Andrzej Sumi, Takahiro Albrow, Michael D. Chung, Sun-Ju Hwang, Kyu-Ha Jung, Youn Kil Ryu, Yoon-Hyun Shvartzvald, Yossi Cha, Sang-Mok Kim, Dong-Jin Kim, Hyoun-Woo Kim, Seung-Lee Lee, Dong-Joo Lee, Yongseok Park, Byeong-Gon Pogge, Richard W. Mróz, Przemek Szymański, Michał K. Skowron, Jan Poleski, Radosław Soszyński, Igor Pietrukowicz, Paweł Kozłowski, Szymon Rybicki, Krzysztof A. Iwanek, Patryk Ulaczyk, Krzysztof Wrona, Marcin Gromadzki, Mariusz Abe, Fumio Bando, Ken Barry, Richard Bennett, David P. Bhattacharya, Aparna Bond, Ian A. Fujii, Hirosane Fukui, Akihiko Hamada, Ryusei Hamada, Shunya Hamasaki, Naoto Hirao, Yuki Silva, Stela Ishitani Itow, Yoshitaka Kirikawa, Rintaro Koshimoto, Naoki Matsubara, Yutaka Miyazaki, Shota Muraki, Yasushi Nagai, Tutumi Nunota, Kansuke Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas J. Satoh, Yuki Suzuki, Daisuke Tomoyoshi, Mio Tristram, Paul . J. Vandorou, Aikaterini Yama, Hibiki Yamashita, Kansuke Earth and Planetary Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics 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 sub-prime 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. |
| title | Systematic KMTNet Planetary Anomaly Search. XI. Complete Sample of 2016 Sub-Prime Field Planets |
| topic | Earth and Planetary Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2401.04256 |