Systematic KMTNet Planetary Anomaly Search. XII. Complete Sample of 2017 Subprime Field Planets
Systematic KMTNet Planetary Anomaly Search. XII. Complete Sample of 2017 Subprime Field Planets
We report the analysis of four unambiguous planets and one possible planet from the subprime fields ($\Gamma \leq 1~{\rm hr}^{-1}$) of the 2017 Korea Microlensing Telescope Network (KMTNet) microlensing survey, to complete the KMTNet AnomalyFinder planetary sample for the 2017 subprime fields. They are KMT-2017-BLG-0849, KMT-2017-BLG-1057, OGLE-2017-BLG-0364, and KMT-2017-BLG-2331 (unambiguous), as well as KMT-2017-BLG-0958 (possible). For the four unambiguous planets, the mean planet-host mass ratios, $q$, are $(1.0, 1.2, 4.6, 13) \times 10^{-4}$, the median planetary masses are $(6.4, 24, 76, 171)~M_{\oplus}$ and the median host masses are $(0.19, 0.57, 0.49, 0.40)~M_{\odot}$ from a Bayesian analysis. We have completed the AnomalyFinder planetary sample from the first 4-year KMTNet data (2016--2019), with 112 unambiguous planets in total, which nearly tripled the microlensing planetary sample. The ``sub-Saturn desert'' ($\log q = \left[-3.6, -3.0\right]$) found in the 2018 and 2019 KMTNet samples is confirmed by the 2016 and 2017 KMTNet samples.
Wei Zhu、Yuqian Gui、Weicheng Zang、Ruocheng Zhai、Yoon-Hyun Ryu、Andrzej Udalski、Hongjing Yang、Cheongho Han、Shude Mao、Krzysztof Ulaczyk、Krzysztof A. Rybicki、Patryk Iwanek、Marcin Wrona、Mariusz Gromadzki、Hanyue Wang、Jiyuan Zhang、Renkun Kuang、Qiyue Qian、Michael D. Albrow、Sun-Ju Chung、Andrew Gould、Kyu-Ha Hwang、Youn Kil Jung、In-Gu Shin、Yossi Shvartzvald、Jennifer C. Yee、Sang-Mok Cha、Dong-Jin Kim、Hyoun-Woo Kim、Seung-Lee Kim、Chung-Uk Lee、Dong-Joo Lee、Yongseok Lee、Byeong-Gon Park、Richard W. Pogge、Przemek Mróz、Micha? K. Szymański、Jan Skowron、Rados?aw Poleski、Igor Soszyński、Pawe? Pietrukowicz、Szymon Koz?owski
天文学
Wei Zhu,Yuqian Gui,Weicheng Zang,Ruocheng Zhai,Yoon-Hyun Ryu,Andrzej Udalski,Hongjing Yang,Cheongho Han,Shude Mao,Krzysztof Ulaczyk,Krzysztof A. Rybicki,Patryk Iwanek,Marcin Wrona,Mariusz Gromadzki,Hanyue Wang,Jiyuan Zhang,Renkun Kuang,Qiyue Qian,Michael D. Albrow,Sun-Ju Chung,Andrew Gould,Kyu-Ha Hwang,Youn Kil Jung,In-Gu Shin,Yossi Shvartzvald,Jennifer C. Yee,Sang-Mok Cha,Dong-Jin Kim,Hyoun-Woo Kim,Seung-Lee Kim,Chung-Uk Lee,Dong-Joo Lee,Yongseok Lee,Byeong-Gon Park,Richard W. Pogge,Przemek Mróz,Micha? K. Szymański,Jan Skowron,Rados?aw Poleski,Igor Soszyński,Pawe? Pietrukowicz,Szymon Koz?owski.Systematic KMTNet Planetary Anomaly Search. XII. Complete Sample of 2017 Subprime Field Planets[EB/OL].(2025-04-28)[2025-06-08].https://arxiv.org/abs/2504.20155.点此复制
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