{"paper":{"title":"Spectroscopic Confirmation of a z=6.740 Galaxy behind the Bullet Cluster","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"(2) INAF Trieste, (3) UC Santa Barbara, (4) INAF Roma, (5) University of Florida, (6) Ohio University, (7) Steward Observatory, (8) STScI), Adriano Fontana (4), Anthony H. Gonzalez (5), Benjamin Cl\\'ement (7) ((1) UC Davis, Dennis Zaritsky (7), Douglas Clowe (6), Eros Vanzella (2), Maru\\v{s}a Brada\\v{c} (1), Massimo Stiavelli (8), Nicholas Hall (1), Tommaso Treu (3)","submitted_at":"2012-07-23T20:00:06Z","abstract_excerpt":"We present the first results of our spectroscopic follow-up of 6.5 < z < 10 candidate galaxies behind clusters of galaxies. We report the spectroscopic confirmation of an intrinsically faint Lyman break galaxy (LBG) identified as a z 850LP-band dropout behind the Bullet Cluster. We detect an emission line at {\\lambda} = 9412 {\\AA} at >5{\\sigma} significance using a 16 hr long exposure with FORS2 VLT. Based on the absence of flux in bluer broadband filters, the blue color of the source, and the absence of additional lines, we identify the line as Ly{\\alpha} at z = 6.740 \\pm 0.003. The integrate"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.5516","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"}