{"paper":{"title":"MOA-2015-BLG-337: A Planetary System with a Low-mass Brown Dwarf/Planetary Boundary Host, or a Brown Dwarf Binary","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. Bhattacharya, A. Fukui, A. Gould, A. Sharan, A. Udalski, A. Yonehara, B.-G. Park, C. Han, C. H. Ling, C. Ranc, C.-U. Lee, D.-J. Kim, D.-J. Lee, D.J. Sullivan, D. P. Bennett, D. Suzuki, F. Abe, H. Shibai, H. Suematsu, H.-W. Kim, I. A. Bond, I.-G.Shin, I. Soszy'nski, J. C. Yee, J. Skowron, K.-H. Hwang, K. Kawasaki, K. Ohnishi, K. Ulaczyk, M. C. Li, M. D. Albrow, M. Donachie, M. K. Szyma'nski, M. Nagakane, M. Pawlak, N. Koshimoto, N. Rattenbury, P. J. Tristram, P. Mr'oz, P. Pietrukowicz, R. Barry, R. Poleski, R. W. Pogge, S.-J. Chung, S.-L. Kim, S.-M. Cha, S. Miyazaki, S. owski, T. Matsuo, T. Saito, T. Sumi, T. Yamada, W. Zang, W. Zhu, Y. Hirao, Y.-H. Ryu, Y. Itow, Y. K. Jung, Y. Lee, Y. Matsubara, Y. Muraki, Y. Shvartzvald","submitted_at":"2018-04-03T05:27:14Z","abstract_excerpt":"We report the discovery and the analysis of the short timescale binary-lens microlensing event, MOA-2015-BLG-337. The lens system could be a planetary system with a very low mass host, around the brown dwarf/planetary mass boundary, or a brown dwarf binary. We found two competing models that explain the observed light curves with companion/host mass ratios of q~0.01 and ~0.17, respectively. From the measurement of finite source effects in the best-fit planetary model, we find a relatively small angular Einstein radius of theta_E ~ 0.03 mas which favors a low mass lens. We conduct a Bayesian an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.00830","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":""},"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"}