Systematic KMTNet planetary anomaly search

Author:

Gould Andrew,Han Cheongho,Zang Weicheng,Yang Hongjing,Hwang Kyu-Ha,Udalski Andrzej,Bond Ian A.,Albrow Michael D.,Chung Sun-Ju,Jung Youn Kil,Ryu Yoon-Hyun,Shin In-Gu,Shvartzvald Yossi,Yee Jennifer C.,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.,Mróz Przemek,Szymański Michał K.,Skowron Jan,Poleski Radek,Soszyński Igor,Pietrukowicz Paweł,Kozłowski Szymon,Ulaczyk Krzysztof,Rybicki Krzysztof A.,Iwanek Patryk,Wrona Marcin,Abe Fumio,Barry Richard,Bennett David P.,Bhattacharya Aparna,Fujii Hirosame,Fukui Akihiko,Hirao Yuki,Silva Stela Ishitani,Kirikawa Rintaro,Kondo Iona,Koshimoto Naoki,Matsubara Yutaka,Matsumoto Sho,Miyazaki Shota,Muraki Yasushi,Okamura Arisa,Olmschenk Greg,Ranc Clément,Rattenbury Nicholas J.,Satoh Yuki,Sumi Takahiro,Suzuki Daisuke,Toda Taiga,Tristram Paul J.,Vandorou Aikaterini,Yama Hibiki,Beichman Charles,Bryden Geoffry,Novati Sebastiano Calchi,Gaudi B. Scott,Henderson Calen B.,Penny Matthew T.,Jacklin Savannah,Stassun Keivan G., , , ,

Abstract

We complete the analysis of all 2018 prime-field microlensing planets identified by the Korea Microlensing Telescope Network (KMTNet) Anomaly Finder. Among the ten previously unpublished events with clear planetary solutions, eight are either unambiguously planetary or are very likely to be planetary in nature: OGLE-2018-BLG-1126, KMT-2018-BLG-2004, OGLE-2018-BLG-1647, OGLE-2018-BLG-1367, OGLE-2018-BLG-1544, OGLE-2018-BLG-0932, OGLE-2018-BLG-1212, and KMT-2018-BLG-2718. Combined with the four previously published new Anomaly Finder events and 12 previously published (or in preparation) planets that were discovered by eye, this makes a total of 24 2018 prime-field planets discovered or recovered by Anomaly Finder. Together with a paper in preparation on 2018 subprime planets, this work lays the basis for the first statistical analysis of the planet mass-ratio function based on planets identified in KMTNet data. By systematically applying the heuristic analysis to each event, we identified the small modification in their formalism that is needed to unify the so-called close-wide and inner-outer degeneracies.

Publisher

EDP Sciences

Subject

Space and Planetary Science,Astronomy and Astrophysics

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