{"paper":{"title":"Physical Orbit for Lambda Virginis and a Test of Stellar Evolution Models","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) CfA, (3) Michelson Science Center, (4) Instituto de Astrofisica de Andalucia, (5) Grenoble, (6) UMass), A. Claret (4), A. F. Boden (3), E. Pedretti (1), F. Malbet (5), F. P. Schloerb (6), G. Torres (2), J. D. Monnier (1), J.-P. Berger (5), K. Perraut (5) ((1) U Michigan, M. G. Lacasse (2), M. Zhao (1), N. P. Carleton (2), P. Kern (5), R. Millan-Gabet (3), W. A. Traub (2)","submitted_at":"2006-12-05T20:06:09Z","abstract_excerpt":"Lambda Virginis (LamVir) is a well-known double-lined spectroscopic Am binary with the interesting property that both stars are very similar in abundance but one is sharp-lined and the other is broad-lined. We present combined interferometric and spectroscopic studies of LamVir. The small scale of the LamVir orbit (~20 mas) is well resolved by the Infrared Optical Telescope Array (IOTA), allowing us to determine its elements as well as the physical properties of the components to high accuracy. The masses of the two stars are determined to be 1.897 Msun and 1.721 Msun, with 0.7% and 1.5% error"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0612135","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"}