{"paper":{"title":"KMT-2019-BLG-1339L: an M Dwarf with a Giant Planet or a Companion Near the Planet/Brown Dwarf Boundary","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"Andrew Gould, Andrzej Udalski, Byeong-Gon Park, Cheongho Han, Chung-Uk Lee, Doeon Kim, Dong-Jin Kim, Dong-Joo Lee, Hyoun-Woo Kim, Igor Soszy\\'nski, In-Gu Shin, Jan Skowron, Jennifer C. Yee, Krzysztof A. Rybicki, Krzysztof Ulaczyk, Kyu-Ha Hwang, Marcin Wrona, Mariusz Gromadzki, Michael D. Albrow, Micha{\\l} K. Szyma'nski, Patryk Iwanek, Pawe{\\l} Pietrukowicz, Przemek Mr\\'oz, Rados{\\l}aw Poleski, Richard W. Pogge, Sang-Mok Cha, Seung-Lee Kim, Sun-Ju Chung, Szymon Koz{\\l}owski, Weicheng Zang, Yongseok Lee, Yoon-Hyun Ryu, Yossi Shvartzvald, Youn Kil Jung","submitted_at":"2020-03-05T00:04:12Z","abstract_excerpt":"We analyze KMT-2019-BLG-1339, a microlensing event with an obvious but incompletely resolved brief anomaly feature around the peak of the light curve. Although the origin of the anomaly is identified to be a companion to the lens with a low mass ratio $q$, the interpretation is subject to two different degeneracy types. The first type is the ambiguity in $\\rho$, representing the angular source radius scaled to the angular radius of the Einstein ring, $\\theta_{\\rm E}$, and the other is the $s\\leftrightarrow s^{-1}$ degeneracy. The former type, `finite-source degeneracy', causes ambiguities in b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.02375","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2003.02375/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}