Mass Production of 2023 KMTNet Microlensing Planets. II. Two Planets and A Brown Dwarf

Bibcode
2026AJ....171..352L
DOI
10.3847/1538-3881/ae6253
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; Ha Hwang, Kyu-; 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.; KMTNet Collaboration; 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.; OGLE Collaboration; Abe, Fumio; Bando, Ken; Bennett, David P.; Bhattacharya, Aparna; Bond, Ian A.; Fukui, Akihiko; Hamada, Ryusei; Hamada, Shunya; Hamasak, Naoto; Hirao, Yuki; Ishitani Silva, Stela; 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; MOA Collaboration
Referencia bibliográfica

The Astronomical Journal

Fecha de publicación:
6
2026
Número de autores
69
Número de autores del IAC
1
Número de citas
0
Número de citas referidas
0
Descripción
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 logq∼−3.0 and −2.6, while the third exhibits a brown dwarf mass ratio of logq∼−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.
Tipo
Con árbitro

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