{"paper":{"title":"Optical Line Emission from z$\\sim$6.8 Sources with Deep Constraints on Ly$\\alpha$ Visibility","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Fontana, A. Grazian, A. Koekemoer, D. Paris, E. Giallongo, E. Merlin, E. Vanzella, H. Yan, K. I. Caputi, L. Pentericci, M. Castellano, P. Santini, R. Amorin, R. Maiolino, S. Cristiani, S. de Barros, S. L. Finkelstein, S. Pilo","submitted_at":"2017-03-27T09:51:39Z","abstract_excerpt":"We analyze a sample of $z$-dropout galaxies in the CANDELS GOODS South and UDS fields that have been targeted by a dedicated spectroscopic campaign aimed at detecting their Ly$\\alpha$ line. Deep IRAC observations at 3.6 and 4.5 $\\mu$m are used to determine the strength of optical emission lines affecting these bands at z$\\sim$6.5-6.9 in order to i) investigate possible physical differences between Ly$\\alpha$ emitting and non-emitting sources; ii) constrain the escape fraction of ionizing photons; iii) provide an estimate of the specific star-formation rate at high redshifts. We find evidence o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.08986","kind":"arxiv","version":3},"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"}