{"paper":{"title":"First visual orbit for the prototypical colliding-wind binary WR 140","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"10), (10) Center for Microfinance), (2) Caltech, (3) IPAG, (4) JPL, (5) UMass-Amherst, (6) Georgia State University/CHARA, (7) NOAO, (8) U. Edinburgh, 9), (9) ESO, A. Tannirkulam (1, E. Pedretti (1, F. Baron (1), F.P.Schloerb (5), H. McAlister (6), J.D.Monnier (1), J.P. Berger (3), J. Sturmann (6), L. Sturmann (6), Ming Zhao (1), N. Turner (6), P. M. Williams (8) ((1) U. Michigan, R. Millan-Gabet (2), S. Kraus (1), S. Ridgway (7), T. ten Brummelaar (6), W. Traub (4)","submitted_at":"2011-11-04T22:17:46Z","abstract_excerpt":"Wolf-Rayet stars represent one of the final stages of massive stellar evolution. Relatively little is known about this short-lived phase and we currently lack reliable mass, distance, and binarity determinations for a representative sample. Here we report the first visual orbit for WR 140(=HD193793), a WC7+O5 binary system known for its periodic dust production episodes triggered by intense colliding winds near periastron passage. The IOTA and CHARA interferometers resolved the pair of stars in each year from 2003--2009, covering most of the highly-eccentric, 7.9 year orbit. Combining our resu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.1266","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"}