2023年KMTNet微镜行星大规模生产. II：两颗行星与一颗棕矮星
地球与行星天体物理
2026-03-18 v2 星系天体物理
摘要
为拓展韩国微镜望远镜网络（KMTNet）的同质微镜行星样本，我们调查了2023年主场数据中由AnomalyFinder搜索识别的六个行星候选对象，包括KMT-2023-BLG-1592、OGLE-2023-BLG-0766、KMT-2023-BLG-0332、KMT-2023-BLG-0486、KMT-2023-BLG-0792和OGLE-2023-BLG-1043。光度曲线建模表明，前两个事件的行星质量比分别为log q≈-3.0和-2.6，而第三个事件表现为棕矮星质量比log q≈-1.4。其余三个事件显示已知的二 lens 单 source（2L1S）与单 lens 双 source（1L2S）解释之间的退轭。贝叶斯分析给出约0.6和1.2个木星质量的伴随物质量，这两个行星系统很可能位于M型或K型恒星主星的雪线之外。对KMTNet行星样本的回顾显示，由AnomalyFinder发现的候选对象显然更容易出现2L1S/1L2S退轭，这与AnomalyFinder倾向于检测更细微行星信号的趋势相一致。
引用
@article{arxiv.2603.13887,
title = {Mass Production of 2023 KMTNet Microlensing Planets. II: Two Planets and A Brown Dwarf},
author = {Zhixing Li and Hongyu Li and Weicheng Zang and Yoon-Hyun Ryu and Andrzej Udalski and Takahiro Sumi and Hongjing Yang and Yuchen Tang and Jiyuan Zhang and Shude Mao and Michael D. Albrow and Sun-Ju Chung and Andrew Gould and Cheongho Han and Kyu-Ha Hwang and Youn Kil Jung and In-Gu Shin and Yossi Shvartzvald and Jennifer C. Yee and Sang-Mok Cha and Dong-Jin Kim and Seung-Lee Kim and Chung-Uk Lee and Dong-Joo Lee and Yongseok Lee and Byeong-Gon Park and Richard W. Pogge and Przemek Mróz and Michał K. Szymański and Jan Skowron and Radoslaw Poleski and Igor Soszyński and Paweł Pietrukowicz and Szymon Kozłowski and Krzysztof A. Rybicki and Patryk Iwanek and Krzysztof Ulaczyk and Marcin Wrona and Mariusz Gromadzki and Mateusz J. Mróz and Fumio Abe and Ken Bando and David P. Bennett and Aparna Bhattacharya and Ian A. Bond and Akihiko Fukui and Ryusei Hamada and Shunya Hamada and Naoto Hamasak and Yuki Hirao and Stela Ishitani Silva and Naoki Koshimoto and Yutaka Matsubara and Shota Miyazaki and Yasushi Muraki and Tutumi Nagai and Kansuke Nunota and Greg Olmschenk and Clément Ranc and Nicholas J. Rattenbury and Yuki Satoh and Daisuke Suzuki and Sean Terry and Paul J. Tristram and Aikaterini Vandorou and Hibiki Yama},
journal= {arXiv preprint arXiv:2603.13887},
year = {2026}
}
备注
17 pages, 10 figures, 9 tables