{"paper":{"title":"The CGM and IGM at z$\\sim$5: metal budget and physical connection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alex Codoreanu, Bram Venemans, Emma V. Ryan-Weber, George Becker, Luz \\'Angela Garc\\'ia, Max Pettini, Neil H.M. Crighton, Piero Madau","submitted_at":"2018-09-16T04:20:28Z","abstract_excerpt":"We present further results of a survey for absorption line systems in the spectra of four high redshift quasars (5.79 $\\le$ z$_{\\textrm{em}}$ $\\le$ 6.13) obtained with the ESO Very Large Telescope X-Shooter. We identify 36 $\\textrm{CIV}$ and 7 $\\textrm{SiIV}$ systems with a $\\ge$ 5$\\sigma$ significance. The highest redshift $\\textrm{CIV}$ and $\\textrm{SiIV}$ absorbers identified in this work are at z = 5.80738 $\\pm$ 0.00017 and z = 5.77495 $\\pm$ 0.00038, respectively. We compute the comoving mass density of $\\textrm{SiIV}$ ($\\Omega_{\\textrm{SiIV}}$) and find that it evolves from $\\Omega_{\\text"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.05813","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"}