Systematic KMTNet Planetary Anomaly Search. XI. Complete Sample of 2016 Sub-Prime Field Planets
Abstract
Following Shin et al. (2023b), which is a part of the Systematic KMTNet Planetary Anomaly Search series (i.e., a search for planets in the 2016 KMTNet prime fields), we conduct a systematic search of the 2016 KMTNet sub-prime fields using a semi-machine-based algorithm to identify hidden anomalous events missed by the conventional by-eye search. We find four new planets and seven planet candidates that were buried in the KMTNet archive. The new planets are OGLE-2016-BLG-1598Lb, OGLE-2016-BLG-1800Lb, MOA-2016-BLG-526Lb, and KMT-2016-BLG-2321Lb, which show typical properties of microlensing planets, i.e., giant planets orbit M dwarf host stars beyond their snow lines. For the planet candidates, we find planet/binary or 2L1S/1L2S degeneracies, which are an obstacle to firmly claiming planet detections. By combining the results of Shin et al. (2023b) and this work, we find a total of nine hidden planets, which is about half the number of planets discovered by eye in 2016. With this work, we have met the goal of the systematic search series for 2016, which is to build a complete microlensing planet sample. We also show that our systematic searches significantly contribute to completing the planet sample, especially for planet/host mass ratios smaller than , which were incomplete in previous by-eye searches of the KMTNet archive.
Keywords
Cite
@article{arxiv.2401.04256,
title = {Systematic KMTNet Planetary Anomaly Search. XI. Complete Sample of 2016 Sub-Prime Field Planets},
author = {In-Gu Shin and Jennifer C. Yee and Weicheng Zang and Cheongho Han and Hongjing Yang and Andrew Gould and Chung-Uk Lee and Andrzej Udalski and Takahiro Sumi and Michael D. Albrow and Sun-Ju Chung and Kyu-Ha Hwang and Youn Kil Jung and Yoon-Hyun Ryu and Yossi Shvartzvald and Sang-Mok Cha and Dong-Jin Kim and Hyoun-Woo Kim and Seung-Lee Kim 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 Radosław 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 Fumio Abe and Ken Bando and Richard Barry and David P. Bennett and Aparna Bhattacharya and Ian A. Bond and Hirosane Fujii and Akihiko Fukui and Ryusei Hamada and Shunya Hamada and Naoto Hamasaki and Yuki Hirao and Stela Ishitani Silva and Yoshitaka Itow and Rintaro Kirikawa 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 Mio Tomoyoshi and Paul . J. Tristram and Aikaterini Vandorou and Hibiki Yama and Kansuke Yamashita},
journal= {arXiv preprint arXiv:2401.04256},
year = {2024}
}
Comments
63 pages, 16 Tables, 19 Figures, Submitted in the AAS journal