{"paper":{"title":"KMT-2016-BLG-2052L: Microlensing Binary Composed of M Dwarfs Revealed from a Very Long Time-scale Event","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Andrew Gould, B. Scott Gaudi, Byeong-Gon Park, Calen B. Henderson, Charles Beichman, Cheongho Han, Chung-Uk Lee, Chun-Hwey Kim, Doeon Kim, Dong-Jin Kim, Dong-Joo Lee, Geoff Bryden, Hyoun-Woo Kim, In-Gu Shin, Jennifer C. Yee, Kyu-Ha Hwang, Matthew T. P., Michael D. Albrow, Richard W. Pogge, Sang-Mok Cha, Savannah R. Jacklin, Sebastiano Calchi Novati, Seung-Lee Kim, Sun-Ju Chung, Woong-Tae Kim, Yongseok Lee, Yoon-Hyun Ryu, Yossi Shvartzvald, Youn Kil Jung","submitted_at":"2018-07-30T01:12:00Z","abstract_excerpt":"We present the analysis of a binary microlensing event KMT-2016-BLG-2052, for which the lensing-induced brightening of the source star lasted for 2 seasons. We determine the lens mass from the combined measurements of the microlens parallax $\\pie$ and angular Einstein radius $\\thetae$. The measured mass indicates that the lens is a binary composed of M dwarfs with masses of $M_1\\sim 0.34~M_\\odot$ and $M_2\\sim 0.17~M_\\odot$. The measured relative lens-source proper motion of $\\mu\\sim 3.9~{\\rm mas}~{\\rm yr}^{-1}$ is smaller than $\\sim 5~{\\rm mas}~{\\rm yr}^{-1}$ of typical Galactic lensing events"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.11132","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"}