Systematic Reanalysis of KMTNet microlensing events, Paper I: Updates of the Photometry Pipeline and a New Planet Candidate
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arXiv
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| Natura: | Preprint |
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2023
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| author | Yang, Hongjing Yee, Jennifer C. Hwang, Kyu-Ha Qian, Qiyue Bond, Ian A. Gould, Andrew Hu, Zhecheng Zhang, Jiyuan Mao, Shude Zhu, Wei Albrow, Michael D. Chung, Sun-Ju Han, Cheongho Jung, Youn Kil Ryu, Yoon-Hyun Shin, In-Gu Shvartzvald, Yossi Cha, Sang-Mok Kim, Dong-Jin Kim, Hyoun-Woo Kim, Seung-Lee Lee, Chung-Uk Lee, Dong-Joo Lee, Yongseok Park, Byeong-Gon Pogge, Richard W. Zang, Weicheng Abe, Fumio Barry, Richard Bennett, David P. Bhattacharya, Aparna Donachie, Martin Fujii, Hirosane Fukui, Akihiko Hirao, Yuki Itow, Yoshitaka Kirikawa, Rintaro Kondo, Iona Koshimoto, Naoki Li, Man Cheung Alex Matsubara, Yutaka Muraki, Yasushi Miyazaki, Shota Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas J. Satoh, Yuki Shoji, Hikaru Silva, Stela Ishitani Sumi, Takahiro Suzuki, Daisuke Tanaka, Yuzuru Tristram, Paul J. Yamawaki, Tsubasa Yonehara, Atsunori |
| author_facet | Yang, Hongjing Yee, Jennifer C. Hwang, Kyu-Ha Qian, Qiyue Bond, Ian A. Gould, Andrew Hu, Zhecheng Zhang, Jiyuan Mao, Shude Zhu, Wei Albrow, Michael D. Chung, Sun-Ju Han, Cheongho Jung, Youn Kil Ryu, Yoon-Hyun Shin, In-Gu Shvartzvald, Yossi Cha, Sang-Mok Kim, Dong-Jin Kim, Hyoun-Woo Kim, Seung-Lee Lee, Chung-Uk Lee, Dong-Joo Lee, Yongseok Park, Byeong-Gon Pogge, Richard W. Zang, Weicheng Abe, Fumio Barry, Richard Bennett, David P. Bhattacharya, Aparna Donachie, Martin Fujii, Hirosane Fukui, Akihiko Hirao, Yuki Itow, Yoshitaka Kirikawa, Rintaro Kondo, Iona Koshimoto, Naoki Li, Man Cheung Alex Matsubara, Yutaka Muraki, Yasushi Miyazaki, Shota Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas J. Satoh, Yuki Shoji, Hikaru Silva, Stela Ishitani Sumi, Takahiro Suzuki, Daisuke Tanaka, Yuzuru Tristram, Paul J. Yamawaki, Tsubasa Yonehara, Atsunori |
| contents | In this work, we update and develop algorithms for KMTNet tender-love care (TLC) photometry in order to create an new, mostly automated, TLC pipeline. We then start a project to systematically apply the new TLC pipeline to the historic KMTNet microlensing events, and search for buried planetary signals. We report the discovery of such a planet candidate in the microlensing event MOA-2019-BLG-421/KMT-2019-BLG-2991. The anomalous signal can be explained by either a planet around the lens star or the orbital motion of the source star. For the planetary interpretation, despite many degenerate solutions, the planet is most likely to be a Jovian planet orbiting an M or K dwarf, which is a typical microlensing planet. The discovery proves that the project can indeed increase the sensitivity of historic events and find previously undiscovered signals. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_04876 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Systematic Reanalysis of KMTNet microlensing events, Paper I: Updates of the Photometry Pipeline and a New Planet Candidate Yang, Hongjing Yee, Jennifer C. Hwang, Kyu-Ha Qian, Qiyue Bond, Ian A. Gould, Andrew Hu, Zhecheng Zhang, Jiyuan Mao, Shude Zhu, Wei Albrow, Michael D. Chung, Sun-Ju Han, Cheongho Jung, Youn Kil Ryu, Yoon-Hyun Shin, In-Gu Shvartzvald, Yossi Cha, Sang-Mok Kim, Dong-Jin Kim, Hyoun-Woo Kim, Seung-Lee Lee, Chung-Uk Lee, Dong-Joo Lee, Yongseok Park, Byeong-Gon Pogge, Richard W. Zang, Weicheng Abe, Fumio Barry, Richard Bennett, David P. Bhattacharya, Aparna Donachie, Martin Fujii, Hirosane Fukui, Akihiko Hirao, Yuki Itow, Yoshitaka Kirikawa, Rintaro Kondo, Iona Koshimoto, Naoki Li, Man Cheung Alex Matsubara, Yutaka Muraki, Yasushi Miyazaki, Shota Olmschenk, Greg Ranc, Clément Rattenbury, Nicholas J. Satoh, Yuki Shoji, Hikaru Silva, Stela Ishitani Sumi, Takahiro Suzuki, Daisuke Tanaka, Yuzuru Tristram, Paul J. Yamawaki, Tsubasa Yonehara, Atsunori Earth and Planetary Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics In this work, we update and develop algorithms for KMTNet tender-love care (TLC) photometry in order to create an new, mostly automated, TLC pipeline. We then start a project to systematically apply the new TLC pipeline to the historic KMTNet microlensing events, and search for buried planetary signals. We report the discovery of such a planet candidate in the microlensing event MOA-2019-BLG-421/KMT-2019-BLG-2991. The anomalous signal can be explained by either a planet around the lens star or the orbital motion of the source star. For the planetary interpretation, despite many degenerate solutions, the planet is most likely to be a Jovian planet orbiting an M or K dwarf, which is a typical microlensing planet. The discovery proves that the project can indeed increase the sensitivity of historic events and find previously undiscovered signals. |
| title | Systematic Reanalysis of KMTNet microlensing events, Paper I: Updates of the Photometry Pipeline and a New Planet Candidate |
| topic | Earth and Planetary Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2311.04876 |