Mass Production of 2021 KMTNet Microlensing Planets. III. Analysis of Three Giant Planets

Shin et al. (2023)

Kyu-Ha Hwang #4 Co-author Chung, Sun-Ju #8 Co-author Jung Youn Kil #10 Co-author Yoon-Hyun Ryu #11 Co-author Cha, Sang-Mok #14 Co-author Dong-jin Kim #15 Co-author Kim Seung-Lee #16 Co-author Lee, Chung-Uk #17 Co-author Dong-Joo Lee #18 Co-author Yongseok LEE #19 Co-author PARK, BYEONG GON #20 Co-author

January 2023 THE ASTRONOMICAL JOURNAL IF 5.491 A 등급 International collaboration

DOI ↗ NASA ADS ↗

KMTNet(외계행성 탐색시스템)

Abstract

We present the analysis of three more planets from the KMTNet 2021 microlensing season. KMT-2021-BLG0119Lb is a ∼6M_Jup planet orbiting an early M dwarf or a K dwarf, KMT-2021-BLG-0192Lb is a ∼2M_Nep planet orbiting an M dwarf, and KMT-2021-BLG-2294Lb is a ∼1.25M_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.

AI Classification

Maturity Tier

Tier 1 — Classical ML

AI Role

detection / segmentation

incidental

Techniques

classical-ML

Tasks

detection/segmentation

Subfield

exoplanets

multi

Flags

– Develops AI method

· Classification confidence: 90%