OGLE-2018-BLG-0971, MOA-2023-BLG-065, and OGLE-2023-BLG-0136: Microlensing events with prominent orbital effects
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2024
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| author | Han, Cheongho Udalski, Andrzej Bond, Ian A. Lee, Chung-Uk Gould, Andrew Albrow, Michael D. Chung, Sun-Ju Hwang, Kyu-Ha Jung, Youn Kil Kim, Hyoun-Woo Ryu, Yoon-Hyun Shvartzvald, Yossi Shin, In-Gu Yee, Jennifer C. Yang, Hongjing Zang, Weicheng Cha, Sang-Mok Kim, Doeon Kim, Dong-Jin 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 Mróz, Mateusz J. Abe, Fumio Barry, Richard Bennett, David P. Bhattacharya, Aparna Fujii, Hirosame Fukui, Akihiko Hamada, Ryusei Hirao, Yuki Silva, Stela Ishitani Itow, Yoshitaka Kirikawa, Rintaro Koshimoto, Naoki Matsubara, Yutaka Miyazaki, Shota Muraki, Yasushi Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas J. Satoh, Yuki Sumi, Takahiro Suzuki, Daisuke Tomoyoshi, Mio Tristram, Paul J. Vandorou, Aikaterini Yama, Hibiki Yamashita, Kansuke |
| author_facet | Han, Cheongho Udalski, Andrzej Bond, Ian A. Lee, Chung-Uk Gould, Andrew Albrow, Michael D. Chung, Sun-Ju Hwang, Kyu-Ha Jung, Youn Kil Kim, Hyoun-Woo Ryu, Yoon-Hyun Shvartzvald, Yossi Shin, In-Gu Yee, Jennifer C. Yang, Hongjing Zang, Weicheng Cha, Sang-Mok Kim, Doeon Kim, Dong-Jin 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 Mróz, Mateusz J. Abe, Fumio Barry, Richard Bennett, David P. Bhattacharya, Aparna Fujii, Hirosame Fukui, Akihiko Hamada, Ryusei Hirao, Yuki Silva, Stela Ishitani Itow, Yoshitaka Kirikawa, Rintaro Koshimoto, Naoki Matsubara, Yutaka Miyazaki, Shota Muraki, Yasushi Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas J. Satoh, Yuki Sumi, Takahiro Suzuki, Daisuke Tomoyoshi, Mio Tristram, Paul J. Vandorou, Aikaterini Yama, Hibiki Yamashita, Kansuke |
| contents | We undertake a project to reexamine microlensing data gathered from high-cadence surveys. The aim of the project is to reinvestigate lensing events with light curves exhibiting intricate anomaly features associated with caustics, yet lacking prior proposed models to explain these features. Through detailed reanalyses considering higher-order effects, we identify that accounting for orbital motions of lenses is vital in accurately explaining the anomaly features observed in the light curves of the lensing events OGLE-2018-BLG-0971, MOA-2023-BLG-065, and OGLE-2023-BLG-0136. We estimate the masses and distances to the lenses by conducting Bayesian analyses using the lensing parameters of the newly found lensing solutions. From these analyses, we identify that the lenses of the events OGLE-2018-BLG-0971 and MOA-2023-BLG-065 are binaries composed of M dwarfs, while the lens of OGLE-2023-BLG-0136 is likely to be a binary composed of an early K-dwarf primary and a late M-dwarf companion. For all lensing events, the probability of the lens residing in the bulge is considerably higher than that of it being located in the disk. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_05912 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | OGLE-2018-BLG-0971, MOA-2023-BLG-065, and OGLE-2023-BLG-0136: Microlensing events with prominent orbital effects Han, Cheongho Udalski, Andrzej Bond, Ian A. Lee, Chung-Uk Gould, Andrew Albrow, Michael D. Chung, Sun-Ju Hwang, Kyu-Ha Jung, Youn Kil Kim, Hyoun-Woo Ryu, Yoon-Hyun Shvartzvald, Yossi Shin, In-Gu Yee, Jennifer C. Yang, Hongjing Zang, Weicheng Cha, Sang-Mok Kim, Doeon Kim, Dong-Jin 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 Mróz, Mateusz J. Abe, Fumio Barry, Richard Bennett, David P. Bhattacharya, Aparna Fujii, Hirosame Fukui, Akihiko Hamada, Ryusei Hirao, Yuki Silva, Stela Ishitani Itow, Yoshitaka Kirikawa, Rintaro Koshimoto, Naoki Matsubara, Yutaka Miyazaki, Shota Muraki, Yasushi Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas J. Satoh, Yuki Sumi, Takahiro Suzuki, Daisuke Tomoyoshi, Mio Tristram, Paul J. Vandorou, Aikaterini Yama, Hibiki Yamashita, Kansuke Solar and Stellar Astrophysics Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics We undertake a project to reexamine microlensing data gathered from high-cadence surveys. The aim of the project is to reinvestigate lensing events with light curves exhibiting intricate anomaly features associated with caustics, yet lacking prior proposed models to explain these features. Through detailed reanalyses considering higher-order effects, we identify that accounting for orbital motions of lenses is vital in accurately explaining the anomaly features observed in the light curves of the lensing events OGLE-2018-BLG-0971, MOA-2023-BLG-065, and OGLE-2023-BLG-0136. We estimate the masses and distances to the lenses by conducting Bayesian analyses using the lensing parameters of the newly found lensing solutions. From these analyses, we identify that the lenses of the events OGLE-2018-BLG-0971 and MOA-2023-BLG-065 are binaries composed of M dwarfs, while the lens of OGLE-2023-BLG-0136 is likely to be a binary composed of an early K-dwarf primary and a late M-dwarf companion. For all lensing events, the probability of the lens residing in the bulge is considerably higher than that of it being located in the disk. |
| title | OGLE-2018-BLG-0971, MOA-2023-BLG-065, and OGLE-2023-BLG-0136: Microlensing events with prominent orbital effects |
| topic | Solar and Stellar Astrophysics Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2404.05912 |