{"paper":{"title":"Identification of the Microlens in Event MACHO-LMC-20","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Brian M. Patten (1), Charles Alcock (1), Giovanni G. Fazio (1) ((1) CfA (2) JPL), Massimo Marengo (1), Michael W. Werner (2), Nitya Kallivayalil (1)","submitted_at":"2006-09-21T20:11:59Z","abstract_excerpt":"We report on the identification of the lens responsible for microlensing event MACHO-LMC-20. As part of a \\textit{Spitzer}/IRAC program conducting mid-infrared follow-up of the MACHO Large Magellanic Cloud microlensing fields, we discovered a significant flux excess at the position of the source star for this event. These data, in combination with high resolution near-infrared \\textit{Magellan}/PANIC data has allowed us to classify the lens as an early M dwarf in the thick disk of the Milky Way, at a distance of $\\sim 2$ kpc. This is only the second microlens to have been identified, the first"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0609619","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"}