{"paper":{"title":"A new method to obtain the Broad Line Region size of high redshift quasars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"C. A. Negrete, D. Dultzin, J. W. Sulentic, P. Marziani","submitted_at":"2014-04-07T07:35:54Z","abstract_excerpt":"We present high S/N UV spectra for eight quasars at z $\\sim$ 3 obtained with VLT/FORS. The spectra enable us to analyze in detail the strong and weak emission features in the rest-frame range 1300-2000 A of each source (Ciii]$\\lambda$1909, Siiii]$\\lambda$1892, Aliii$\\lambda$1860, Siii$\\lambda$1814, Civ$\\lambda$1549 and blended Siiv$\\lambda$1397+Oiv]$\\lambda$1402). Flux ratios Aliii$\\lambda$1860/Siiii]$\\lambda$1892, Civ$\\lambda$1549/Aliii$\\lambda$1860, Siiv$\\lambda$1397+Oiv]$\\lambda$1402/Siiii]$\\lambda$1892 and Siiv$\\lambda$1397+Oiv]$\\lambda$1402/Civ$\\lambda$1549 strongly constrain ionizing pho"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.1673","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"}