학술논문
Mass Production of 2021 KMTNet Microlensing Planets. III. Analysis of Three Giant Planets
Document Type
article
Author
In-Gu Shin; Jennifer C. Yee; Andrew Gould; Kyu-Ha Hwang; Hongjing Yang; Ian A. Bond; (Leading Authors); Michael D. Albrow; Sun-Ju Chung; Cheongho Han; Youn Kil Jung; Yoon-Hyun Ryu; Yossi Shvartzvald; Weicheng Zang; Sang-Mok Cha; Dong-Jin Kim; Seung-Lee Kim; Chung-Uk Lee; Dong-Joo Lee; Yongseok Lee; Byeong-Gon Park; Richard W. Pogge; (The KMTNet Collaboration); Fumio Abe; Richard Barry; David P. Bennett; Aparna Bhattacharya; Hirosane Fujii; Akihiko Fukui; Yuki Hirao; Stela Ishitani Silva; Yoshitaka Itow; Rintaro Kirikawa; Iona Kondo; Naoki Koshimoto; Yutaka Matsubara; Sho Matsumoto; Shota Miyazaki; Yasushi Muraki; Arisa Okamura; Greg Olmschenk; Clément Ranc; Nicholas J. Rattenbury; Yuki Satoh; Takahiro Sumi; Daisuke Suzuki; Taiga Toda; Paul . J. Tristram; Aikaterini Vandorou; Hibiki Yama; (The MOA Collaboration)
Source
The Astronomical Journal, Vol 165, Iss 1, p 8 (2022)
Subject
Language
English
ISSN
1538-3881
Abstract
We present the analysis of three more planets from the KMTNet 2021 microlensing season. KMT-2021-BLG-0119Lb is a ∼6 M _Jup planet orbiting an early M dwarf or a K dwarf, KMT-2021-BLG-0192Lb is a ∼2 M _Nep planet orbiting an M dwarf, and KMT-2021-BLG-2294Lb is a ∼1.25 M _Nep planet orbiting a very-low-mass M dwarf or a brown dwarf. These by-eye planet detections provide an important comparison sample to the sample selected with the AnomalyFinder algorithm, and in particular, KMT-2021-BLG-2294 is a case of a planet detected by eye but not by algorithm. KMT-2021-BLG-2294Lb is part of a population of microlensing planets around very-low-mass host stars that spans the full range of planet masses, in contrast to the planet population at ≲0.1 au, which shows a strong preference for small planets.