{"paper":{"title":"Spitzer as Microlens Parallax Satellite: Mass and Distance Measurements of Binary Lens System OGLE-2014-BLG-1050L","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Gould, A. Udalski, B.S. Gaudi, C.A. Beichman, C. Han, D.L. Depoy, G. Pietrzynski, H. Park, I.-G. Shin, I. Soszynski, J.C. Yee, J. Jeong, J. Skowron, J.-Y. Choi, K.-H. Hwang, K. Ulaczyk, L. Wyrzykowski, M. Dominik, M.K. Szymanski, P. Mroz, P. Pietrukowicz, R. Poleski, R.W. Pogge, S. Calchi Novati, S. Carey, S. Kozlowski, V. Bozza, Wei Zhu, Y.K. Jung","submitted_at":"2015-01-16T21:00:09Z","abstract_excerpt":"We report the first mass and distance measurement of a caustic-crossing binary system OGLE-2014-BLG-1050L using the space-based microlens parallax method. \\emph{Spitzer} captured the second caustic-crossing of the event, which occurred $\\sim$10 days before that seen from Earth. Due to the coincidence that the source-lens relative motion was almost parallel to the direction of the binary-lens axis, the four-fold degeneracy, which was known before only to occur in single-lens events, persists in this case, leading to either a lower-mass (0.2 $M_\\odot$ and 0.07 $M_\\odot$) binary at $\\sim$1.1 kpc "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.04107","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"}