{"paper":{"title":"ALMA reveals a warm and compact starburst around a heavily obscured supermassive black hole at z=4.75","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"A. Comastri, A. Feltre, A. Mignano, C. Norman, C. Vignali, D. Elbaz, E. Daddi, E. Vanzella, F. Calura, F. Pozzi, F. Vito, G. Cresci, G. Zamorani, J. Fritz, K. Iwasawa, M. Brusa, M. Dickinson, M. Massardi, M. Mignoli, R. Gilli, R. Maiolino, V. Casasola","submitted_at":"2013-12-04T17:12:24Z","abstract_excerpt":"We report ALMA Cycle 0 observations at 1.3mm of LESS J033229.4-275619 (XID403), an Ultraluminous Infrared Galaxy at $z=4.75$ in the Chandra Deep Field South hosting a Compton-thick QSO. The source is not resolved in our data at a resolution of $\\sim$0.75 arcsec, placing an upper-limit of 2.5 kpc to the half-light radius of the continuum emission from heated-dust. After deconvolving for the beam size, however, we found a $\\sim3\\sigma$ indication of an intrinsic source size of $0.27\\pm0.08$ arcsec (Gaussian FWHM), which would correspond to $r_{half}\\sim0.9\\pm0.3$ kpc. We build the far-IR SED of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.1248","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"}