{"paper":{"title":"Spectroscopic investigation of a reionized galaxy overdensity at z=7","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"A. Ferrara, A. Fontana, A. Grazian, A. Hutter, D. Paris, E. Giallongo, E. Merlin, E. Vanzella, F. Marchi, L. Pentericci, M. Castellano, M. Dickinson, M. Giavalisco, P. Dayal, P. Santini, R. Maiolino, S. Carniani, S. Cristiani, S. Gallerani, S. Pilo","submitted_at":"2018-07-24T18:00:02Z","abstract_excerpt":"We present deep spectroscopic follow-up observations of the Bremer Deep Field (BDF) where the two $z\\sim$7 bright Ly$\\alpha$ emitters (LAE) BDF521 and BDF3299 were previously discovered by Vanzella et al. (2011) and where a factor of $\\sim$3-4 overdensity of faint LBGs has been found by Castellano et al. (2016). We confirm a new bright Ly$\\alpha$ emitter, BDF2195, at the same redshift of BDF521, $z=7.008$, and at only $\\sim$90 kpc physical distance from it, confirming that the BDF area is likely an overdense, reionized region. A quantitative assessment of the Ly$\\alpha$ fraction shows that the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.09277","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"}