{"paper":{"title":"$Spitzer$ Parallax of OGLE-2018-BLG-0596: A Low-mass-ratio Planet around an M-dwarf","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Akihiko Fukui, Andrew Gould, Andrzej Udalski, Aparna Bhattacharya, Atsunori Yonehara, B. Scott Gaudi, Byeong-Gon Park, Calen B. Henderson, Charles A. Beichman, Cheongho Han, Chung-Uk Lee, Cl\\'ement Ranc, Daisuke Suzuki, David P. Bennett, Denis J. Sullivan, Dong-Jin Kim, Dong-Joo Lee, Fumio Abe, Geoffery Bryden, Haruno Suematsu, Hyoun-Woo Kim, Ian A. Bond, Igor Soszy\\'nski, In-Gu Shin, Iona Kondo, Jan Skowron, Jennifer C. Yee, Keivan G. Stassun, Krzystof Ulaczyk, Krzysztof A. Rybicki, Kyu-Ha Hwang, Man Cheung Alex Li, Marcin Wrona, Martin Donachie, Masayuki Nagakane, Matthew T. Penny, Michael D. Albrow, Micha{\\l} K. Szyma\\'nski, Naoki Koshimoto, Nicholas J. Rattenbury, Patryk Iwanek, Paul J. Tristram, Pawe{\\l} Pietrukowicz, Przemek Mr\\'oz, Radek Poleski, Richard Barry, Richard W. Pogge, Sang-Mok Cha, Savannah Jacklin, Sean Carey, Sebastiano Calchi Novati, Seung-Lee Kim, Shota Miyazaki, Sun Ju Chung, Szymon Koz{\\l}owski, Takahiro Sumi, Weicheng Zang, Wei Zhu, Yasushi Muraki, Yongseok Lee, Yoon-Hyun Ryu, Yoshitaka Itow, Yossi Shvartzvald, Youn Kil Jung, Yuki Hirao, Yutaka Matsubara","submitted_at":"2019-05-14T22:50:06Z","abstract_excerpt":"We report the discovery of a $Spitzer$ microlensing planet OGLE-2018-BLG-0596Lb, with preferred planet-host mass ratio $q \\sim 2\\times10^{-4}$. The planetary signal, which is characterized by a short $(\\sim 1~{\\rm day})$ \"bump\" on the rising side of the lensing light curve, was densely covered by ground-based surveys. We find that the signal can be explained by a bright source that fully envelops the planetary caustic, i.e., a \"Hollywood\" geometry. Combined with the source proper motion measured from $Gaia$, the $Spitzer$ satellite parallax measurement makes it possible to precisely constrain "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.05873","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"}