{"paper":{"title":"The VAST Survey - IV. A wide brown dwarf companion to the A3V star $\\zeta$ Delphini","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Vigan, B. Macintosh, C. Kulesa, C. Marois, D. W. McCarthy, I. Song, J. Patience, J. R. Graham, K. Ward-Duong, M. S. Bessell, O. Lai, R. Doyon, R. J. De Rosa","submitted_at":"2014-09-30T20:00:02Z","abstract_excerpt":"We report the discovery of a wide co-moving substellar companion to the nearby ($D=67.5\\pm1.1$ pc) A3V star $\\zeta$ Delphini based on imaging and follow-up spectroscopic observations obtained during the course of our Volume-limited A-Star (VAST) multiplicity survey. $\\zeta$ Del was observed over a five-year baseline with adaptive optics, revealing the presence of a previously-unresolved companion with a proper motion consistent with that of the A-type primary. The age of the $\\zeta$ Del system was estimated as $525\\pm125$ Myr based on the position of the primary on the colour-magnitude and tem"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.0005","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"}