Mass Production of 2023 KMTNet Microlensing Planets. II: Two Planets and A Brown Dwarf
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2026
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| author | Li, Zhixing Li, Hongyu Zang, Weicheng Ryu, Yoon-Hyun Udalski, Andrzej Sumi, Takahiro Yang, Hongjing Tang, Yuchen Zhang, Jiyuan Mao, Shude Albrow, Michael D. Chung, Sun-Ju Gould, Andrew Han, Cheongho Hwang, Kyu-Ha Jung, Youn Kil Shin, In-Gu Shvartzvald, Yossi Yee, Jennifer C. Cha, Sang-Mok Kim, Dong-Jin Kim, Seung-Lee Lee, Chung-Uk Lee, Dong-Joo Lee, Yongseok Park, Byeong-Gon Pogge, Richard W. Mróz, Przemek Szymański, Michał K. Skowron, Jan Poleski, Radoslaw Soszyński, Igor Pietrukowicz, Paweł Kozłowski, Szymon Rybicki, Krzysztof A. Iwanek, Patryk Ulaczyk, Krzysztof Wrona, Marcin Gromadzki, Mariusz Mróz, Mateusz J. Abe, Fumio Bando, Ken Bennett, David P. Bhattacharya, Aparna Bond, Ian A. Fukui, Akihiko Hamada, Ryusei Hamada, Shunya Hamasak, Naoto Hirao, Yuki Silva, Stela Ishitani Koshimoto, Naoki Matsubara, Yutaka Miyazaki, Shota Muraki, Yasushi Nagai, Tutumi Nunota, Kansuke Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas J. Satoh, Yuki Suzuki, Daisuke Terry, Sean Tristram, Paul J. Vandorou, Aikaterini Yama, Hibiki |
| author_facet | Li, Zhixing Li, Hongyu Zang, Weicheng Ryu, Yoon-Hyun Udalski, Andrzej Sumi, Takahiro Yang, Hongjing Tang, Yuchen Zhang, Jiyuan Mao, Shude Albrow, Michael D. Chung, Sun-Ju Gould, Andrew Han, Cheongho Hwang, Kyu-Ha Jung, Youn Kil Shin, In-Gu Shvartzvald, Yossi Yee, Jennifer C. Cha, Sang-Mok Kim, Dong-Jin Kim, Seung-Lee Lee, Chung-Uk Lee, Dong-Joo Lee, Yongseok Park, Byeong-Gon Pogge, Richard W. Mróz, Przemek Szymański, Michał K. Skowron, Jan Poleski, Radoslaw Soszyński, Igor Pietrukowicz, Paweł Kozłowski, Szymon Rybicki, Krzysztof A. Iwanek, Patryk Ulaczyk, Krzysztof Wrona, Marcin Gromadzki, Mariusz Mróz, Mateusz J. Abe, Fumio Bando, Ken Bennett, David P. Bhattacharya, Aparna Bond, Ian A. Fukui, Akihiko Hamada, Ryusei Hamada, Shunya Hamasak, Naoto Hirao, Yuki Silva, Stela Ishitani Koshimoto, Naoki Matsubara, Yutaka Miyazaki, Shota Muraki, Yasushi Nagai, Tutumi Nunota, Kansuke Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas J. Satoh, Yuki Suzuki, Daisuke Terry, Sean Tristram, Paul J. Vandorou, Aikaterini Yama, Hibiki |
| contents | To expand the homogeneous microlensing planetary sample of the Korea Microlensing Telescope Network (KMTNet), we investigate six planetary candidates identified by the AnomalyFinder search in the 2023 prime-field data, namely KMT-2023-BLG-1592, OGLE-2023-BLG-0766, KMT-2023-BLG-0332, KMT-2023-BLG-0486, KMT-2023-BLG-0792, and OGLE-2023-BLG-1043. Light-curve modeling indicates that the first two events have planetary mass ratios of $\log q \sim -3.0$ and $-2.6$, while the third exhibits a brown dwarf mass ratio of $\log q \sim -1.4$. The remaining three events show the well-known degeneracy between the binary-lens single-source (2L1S) and single-lens binary-source (1L2S) interpretations. A Bayesian analysis yields companion masses of about 0.6 and 1.2 Jupiter masses for the two planetary systems, likely orbiting beyond the snow lines of M- or K-dwarf hosts. A review of the KMTNet planetary sample shows that candidates discovered by AnomalyFinder are significantly more likely to exhibit the 2L1S/1L2S degeneracy, consistent with the tendency of AnomalyFinder to detect subtler planetary signals. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_13887 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Mass Production of 2023 KMTNet Microlensing Planets. II: Two Planets and A Brown Dwarf Li, Zhixing Li, Hongyu Zang, Weicheng Ryu, Yoon-Hyun Udalski, Andrzej Sumi, Takahiro Yang, Hongjing Tang, Yuchen Zhang, Jiyuan Mao, Shude Albrow, Michael D. Chung, Sun-Ju Gould, Andrew Han, Cheongho Hwang, Kyu-Ha Jung, Youn Kil Shin, In-Gu Shvartzvald, Yossi Yee, Jennifer C. Cha, Sang-Mok Kim, Dong-Jin Kim, Seung-Lee Lee, Chung-Uk Lee, Dong-Joo Lee, Yongseok Park, Byeong-Gon Pogge, Richard W. Mróz, Przemek Szymański, Michał K. Skowron, Jan Poleski, Radoslaw Soszyński, Igor Pietrukowicz, Paweł Kozłowski, Szymon Rybicki, Krzysztof A. Iwanek, Patryk Ulaczyk, Krzysztof Wrona, Marcin Gromadzki, Mariusz Mróz, Mateusz J. Abe, Fumio Bando, Ken Bennett, David P. Bhattacharya, Aparna Bond, Ian A. Fukui, Akihiko Hamada, Ryusei Hamada, Shunya Hamasak, Naoto Hirao, Yuki Silva, Stela Ishitani Koshimoto, Naoki Matsubara, Yutaka Miyazaki, Shota Muraki, Yasushi Nagai, Tutumi Nunota, Kansuke Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas J. Satoh, Yuki Suzuki, Daisuke Terry, Sean Tristram, Paul J. Vandorou, Aikaterini Yama, Hibiki Earth and Planetary Astrophysics Astrophysics of Galaxies To expand the homogeneous microlensing planetary sample of the Korea Microlensing Telescope Network (KMTNet), we investigate six planetary candidates identified by the AnomalyFinder search in the 2023 prime-field data, namely KMT-2023-BLG-1592, OGLE-2023-BLG-0766, KMT-2023-BLG-0332, KMT-2023-BLG-0486, KMT-2023-BLG-0792, and OGLE-2023-BLG-1043. Light-curve modeling indicates that the first two events have planetary mass ratios of $\log q \sim -3.0$ and $-2.6$, while the third exhibits a brown dwarf mass ratio of $\log q \sim -1.4$. The remaining three events show the well-known degeneracy between the binary-lens single-source (2L1S) and single-lens binary-source (1L2S) interpretations. A Bayesian analysis yields companion masses of about 0.6 and 1.2 Jupiter masses for the two planetary systems, likely orbiting beyond the snow lines of M- or K-dwarf hosts. A review of the KMTNet planetary sample shows that candidates discovered by AnomalyFinder are significantly more likely to exhibit the 2L1S/1L2S degeneracy, consistent with the tendency of AnomalyFinder to detect subtler planetary signals. |
| title | Mass Production of 2023 KMTNet Microlensing Planets. II: Two Planets and A Brown Dwarf |
| topic | Earth and Planetary Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2603.13887 |