{"paper":{"title":"Analogs of primeval galaxies two billion years after the Big Bang","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Cimatti, A. Fontana, A. Grazian, A. Koekemoer, B.C. Lemaux, B. Garilli, B. Ribeiro, D. Maccagni, D. Schaerer, D. Vergani, E. Merlin, E. P\\'erez-Montero, E. Vanzella, E. Zucca, G. Zamorani, J. Pforr, L.A.M. Tasca, L. Cassar\\`a, L. Guaita, L.Pentericci, L. Tresse, M. Castellano, M. Giavalisco, M. Talia, N. Hathi, O. Le F\\`evre, P. Cassata, Ricardo Amor\\'in, R. Thomas, S. Bardelli, S. de Barros, T. Contini, V. Le Brun","submitted_at":"2017-01-16T19:01:12Z","abstract_excerpt":"Deep observations are revealing a growing number of young galaxies in the first billion year of cosmic time. Compared to typical galaxies at later times, they show more extreme emission-line properties, higher star formation rates, lower masses, and smaller sizes. However, their faintness precludes studies of their chemical abundances and ionization conditions, strongly limiting our understanding of the physics driving early galaxy build-up and metal enrichment. Here we study a rare population of UV-selected, sub$-L^{*}$(z=3) galaxies at redshift 2.4$<z<$3.5 that exhibit all the rest-frame pro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.04416","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"}