Four Giant Planets from 2024 KMTNet Microlensing Campaign
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| Format: | Preprint |
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2025
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| author | Han, Cheongho Udalski, Andrzej Bond, Ian A. Lee, Chung-Uk Zhang, Jiyuan Albrow, Michael D. Chung, Sun-Ju Gould, Andrew Jung, Youn Kil Hwang, Kyu-Ha Ryu, Yoon-Hyun Shvartzvald, Yossi Shin, In-Gu Yee, Jennifer C. Zang, Weicheng Yang, Hongjing Kim, Doeon Kim, Dong-Jin Park, Byeong-Gon 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 Mróz, Mateusz J. Abe, Fumio Bennett, David P. Bhattacharya, Aparna Hamada, Ryusei Silva, Stela Ishitani Hirao, Yuki Idei, Asahi Miyazaki, Shota Muraki, Yasushi Nagai, Tutumi Nunota, Kansuke Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas J. Satoh, Yuki Sumi, Takahiro Suzuki, Daisuke Tamaoki, Takuto Terry, Sean K. Tristram, Paul J. Vandorou, Aikaterini Yama, Hibiki Tang, Yuchen Tang, Yunyi Mao, Shude Maoz, Dan Zhu, Wei |
| author_facet | Han, Cheongho Udalski, Andrzej Bond, Ian A. Lee, Chung-Uk Zhang, Jiyuan Albrow, Michael D. Chung, Sun-Ju Gould, Andrew Jung, Youn Kil Hwang, Kyu-Ha Ryu, Yoon-Hyun Shvartzvald, Yossi Shin, In-Gu Yee, Jennifer C. Zang, Weicheng Yang, Hongjing Kim, Doeon Kim, Dong-Jin Park, Byeong-Gon 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 Mróz, Mateusz J. Abe, Fumio Bennett, David P. Bhattacharya, Aparna Hamada, Ryusei Silva, Stela Ishitani Hirao, Yuki Idei, Asahi Miyazaki, Shota Muraki, Yasushi Nagai, Tutumi Nunota, Kansuke Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas J. Satoh, Yuki Sumi, Takahiro Suzuki, Daisuke Tamaoki, Takuto Terry, Sean K. Tristram, Paul J. Vandorou, Aikaterini Yama, Hibiki Tang, Yuchen Tang, Yunyi Mao, Shude Maoz, Dan Zhu, Wei |
| contents | In this work, we present analyses of four newly discovered planetary microlensing events from the 2024 KMTNet survey season: KMT-2024-BLG-0176, KMT-2024-BLG-0349, KMT-2024-BLG-1870, and KMT-2024-BLG-2087. In each case, the planetary nature was revealed through distinct types of anomalies in the lensing light curves: a positive bump near the peak for KMT-2024-BLG-0176, an asymmetric peak for KMT-2024-BLG-0349, a short-duration central dip for KMT-2024-BLG-1870, and a caustic-crossing feature for KMT-2024-BLG-2087. Detailed modeling of the light curves confirms that these anomalies are produced by planetary companions with planet-to-host mass ratios in the range of $(1.5\text{--}17.9)\times 10^{-3}$. Despite the diversity of signal morphologies, all planets detected in these events are giant planets with masses comparable to or exceeding that of Jupiter in the Solar System. Each planet orbits a host star less massive than the Sun, emphasizing the strength of microlensing in uncovering planetary systems around low-mass stellar hosts. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_09325 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Four Giant Planets from 2024 KMTNet Microlensing Campaign Han, Cheongho Udalski, Andrzej Bond, Ian A. Lee, Chung-Uk Zhang, Jiyuan Albrow, Michael D. Chung, Sun-Ju Gould, Andrew Jung, Youn Kil Hwang, Kyu-Ha Ryu, Yoon-Hyun Shvartzvald, Yossi Shin, In-Gu Yee, Jennifer C. Zang, Weicheng Yang, Hongjing Kim, Doeon Kim, Dong-Jin Park, Byeong-Gon 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 Mróz, Mateusz J. Abe, Fumio Bennett, David P. Bhattacharya, Aparna Hamada, Ryusei Silva, Stela Ishitani Hirao, Yuki Idei, Asahi Miyazaki, Shota Muraki, Yasushi Nagai, Tutumi Nunota, Kansuke Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas J. Satoh, Yuki Sumi, Takahiro Suzuki, Daisuke Tamaoki, Takuto Terry, Sean K. Tristram, Paul J. Vandorou, Aikaterini Yama, Hibiki Tang, Yuchen Tang, Yunyi Mao, Shude Maoz, Dan Zhu, Wei Earth and Planetary Astrophysics Astrophysics of Galaxies In this work, we present analyses of four newly discovered planetary microlensing events from the 2024 KMTNet survey season: KMT-2024-BLG-0176, KMT-2024-BLG-0349, KMT-2024-BLG-1870, and KMT-2024-BLG-2087. In each case, the planetary nature was revealed through distinct types of anomalies in the lensing light curves: a positive bump near the peak for KMT-2024-BLG-0176, an asymmetric peak for KMT-2024-BLG-0349, a short-duration central dip for KMT-2024-BLG-1870, and a caustic-crossing feature for KMT-2024-BLG-2087. Detailed modeling of the light curves confirms that these anomalies are produced by planetary companions with planet-to-host mass ratios in the range of $(1.5\text{--}17.9)\times 10^{-3}$. Despite the diversity of signal morphologies, all planets detected in these events are giant planets with masses comparable to or exceeding that of Jupiter in the Solar System. Each planet orbits a host star less massive than the Sun, emphasizing the strength of microlensing in uncovering planetary systems around low-mass stellar hosts. |
| title | Four Giant Planets from 2024 KMTNet Microlensing Campaign |
| topic | Earth and Planetary Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2512.09325 |