Mass Production of 2023 KMTNet Microlensing Planets. III: Three Planets from the Subprime Field
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| Format: | Preprint |
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2026
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| author | Li, Hongyu Li, Zhixing Zang, Weicheng Ryu, Yoon-Hyun Udalski, Andrzej Sumi, Takahiro Yang, Hongjing Zhang, Jiyuan Mao, Shude Albrow, Michael Chung, Sun-Ju Gould, Andrew Han, Cheongho Hwang, Kyu-Ha Jung, Youn Kil Shin, In-Gu Shvartzvald, Yossi Yee, Jennifer Cha, Sang-Mok Kim, Dong-Jin Kim, Seung-Lee Lee, Chung-Uk Lee, Dong-Joo Lee, Yongseok Park, Byeong-Gon Pogge, Richard Mróz, Przemek Szymański, Michał Skowron, Jan Poleski, Radoslaw Soszyński, Igor Pietrukowicz, Pawel Kozłowski, Szymon Rybicki, Krzysztof Iwanek, Patryk Ulaczyk, Krzysztof Wrona, Marcin Gromadzki, Mariusz Mróz, Mateusz J. Abe, Fumio Bennett, David Bhattacharya, Aparna Bond, Ian Hamada, Ryusei Hirao, Yuki Silva, Stela Miyazaki, Shota Muraki, Yasushi Nunota, Kansuke Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas Satoh, Yuki Suzuki, Daisuke Tamaoki, Takuto Terry, Sean Tristram, Paul Vandorou, Aikaterini Yama, Hibiki |
| author_facet | Li, Hongyu Li, Zhixing Zang, Weicheng Ryu, Yoon-Hyun Udalski, Andrzej Sumi, Takahiro Yang, Hongjing Zhang, Jiyuan Mao, Shude Albrow, Michael Chung, Sun-Ju Gould, Andrew Han, Cheongho Hwang, Kyu-Ha Jung, Youn Kil Shin, In-Gu Shvartzvald, Yossi Yee, Jennifer Cha, Sang-Mok Kim, Dong-Jin Kim, Seung-Lee Lee, Chung-Uk Lee, Dong-Joo Lee, Yongseok Park, Byeong-Gon Pogge, Richard Mróz, Przemek Szymański, Michał Skowron, Jan Poleski, Radoslaw Soszyński, Igor Pietrukowicz, Pawel Kozłowski, Szymon Rybicki, Krzysztof Iwanek, Patryk Ulaczyk, Krzysztof Wrona, Marcin Gromadzki, Mariusz Mróz, Mateusz J. Abe, Fumio Bennett, David Bhattacharya, Aparna Bond, Ian Hamada, Ryusei Hirao, Yuki Silva, Stela Miyazaki, Shota Muraki, Yasushi Nunota, Kansuke Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas Satoh, Yuki Suzuki, Daisuke Tamaoki, Takuto Terry, Sean Tristram, Paul Vandorou, Aikaterini Yama, Hibiki |
| contents | To complete the analysis of the 2023 KMTNet subprime-field microlensing planetary events identified by its AlertFinder system, we present the analysis of six events, KMT-2023-BLG-(1810, 0084, 1118, 0584, 1697, 2218). We find that the first three events are securely confirmed as planetary, with inferred mass ratios of $\log q \sim -1.9$, $-2.0$, and $-2.6$, respectively. The remaining three events exhibit the well-known degeneracy between binary-lens/single-source (2L1S) and single-lens/binary-source (1L2S) models, and two of these also admit viable stellar binary solutions. A Bayesian analysis indicates that the companions in the confirmed planetary events are likely either super-Jupiters orbiting beyond the snow line of M- or K-dwarf hosts or, for two degenerate solutions of KMT-2023-BLG-1118, Saturn-mass planets orbiting late-type M dwarfs. To date, the 2023 KMTNet sample contains 25 unambiguous planetary events, and its mass-ratio distribution is consistent with that of the KMTNet planetary sample from 2016--2019. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_07392 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Mass Production of 2023 KMTNet Microlensing Planets. III: Three Planets from the Subprime Field Li, Hongyu Li, Zhixing Zang, Weicheng Ryu, Yoon-Hyun Udalski, Andrzej Sumi, Takahiro Yang, Hongjing Zhang, Jiyuan Mao, Shude Albrow, Michael Chung, Sun-Ju Gould, Andrew Han, Cheongho Hwang, Kyu-Ha Jung, Youn Kil Shin, In-Gu Shvartzvald, Yossi Yee, Jennifer Cha, Sang-Mok Kim, Dong-Jin Kim, Seung-Lee Lee, Chung-Uk Lee, Dong-Joo Lee, Yongseok Park, Byeong-Gon Pogge, Richard Mróz, Przemek Szymański, Michał Skowron, Jan Poleski, Radoslaw Soszyński, Igor Pietrukowicz, Pawel Kozłowski, Szymon Rybicki, Krzysztof Iwanek, Patryk Ulaczyk, Krzysztof Wrona, Marcin Gromadzki, Mariusz Mróz, Mateusz J. Abe, Fumio Bennett, David Bhattacharya, Aparna Bond, Ian Hamada, Ryusei Hirao, Yuki Silva, Stela Miyazaki, Shota Muraki, Yasushi Nunota, Kansuke Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas Satoh, Yuki Suzuki, Daisuke Tamaoki, Takuto Terry, Sean Tristram, Paul Vandorou, Aikaterini Yama, Hibiki Earth and Planetary Astrophysics Astrophysics of Galaxies To complete the analysis of the 2023 KMTNet subprime-field microlensing planetary events identified by its AlertFinder system, we present the analysis of six events, KMT-2023-BLG-(1810, 0084, 1118, 0584, 1697, 2218). We find that the first three events are securely confirmed as planetary, with inferred mass ratios of $\log q \sim -1.9$, $-2.0$, and $-2.6$, respectively. The remaining three events exhibit the well-known degeneracy between binary-lens/single-source (2L1S) and single-lens/binary-source (1L2S) models, and two of these also admit viable stellar binary solutions. A Bayesian analysis indicates that the companions in the confirmed planetary events are likely either super-Jupiters orbiting beyond the snow line of M- or K-dwarf hosts or, for two degenerate solutions of KMT-2023-BLG-1118, Saturn-mass planets orbiting late-type M dwarfs. To date, the 2023 KMTNet sample contains 25 unambiguous planetary events, and its mass-ratio distribution is consistent with that of the KMTNet planetary sample from 2016--2019. |
| title | Mass Production of 2023 KMTNet Microlensing Planets. III: Three Planets from the Subprime Field |
| topic | Earth and Planetary Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2605.07392 |