{"paper":{"title":"The redshift and nature of AzTEC/COSMOS 1: A starburst galaxy at z=4.6","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. M. Koekemoer, A.W. Blain, B. Mobasher, C. L. Carilli, C. Willott, D. A. Riechers, D. B. Sanders, D. Hughes, D. Lutz, D. Masters, D. Thompson, E. LeFloc'h, E. Murphy, E. Schinnerer, F. Civano, F. Pozzi, G. Fazio, G. Wilson, H. Aussel, H. McCracken, I. Aretxaga, I. Moric, J. Aguirre, J. Huang, J. Kartaltepe, J.-P. Kneib, K. Sheth, K. S. Scott, L. Riguccini, M. Aravena, M. Salvato, M. Sargent, M. Yun, N.Z. Scoville, O. Ilbert, P. Capak, S. Berta, V. Smolcic, Y. Taniguchi","submitted_at":"2011-02-21T21:00:00Z","abstract_excerpt":"Based on broad/narrow-band photometry and Keck DEIMOS spectroscopy we report a redshift of z=4.64-0.08+0.06 for AzTEC/COSMOS 1, the brightest sub-mm galaxy in the AzTEC/COSMOS field. In addition to the COSMOS-survey X-ray to radio data, we report observations of the source with Herschel/PACS (100, 160 micron), CSO/SHARC II (350 micron), CARMA and PdBI (3 mm). We do not detect CO(5-4) line emission in the covered redshift ranges, 4.56-4.76 (PdBI/CARMA) and 4.94-5.02 (CARMA). If the line is within this bandwidth, this sets 3sigma upper limits on the gas mass to <~8x10^9 M_Sol and <~5x10^10 M_Sol"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1102.4329","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"}