{"paper":{"title":"The Lyman-alpha emission of high-z damped Lyman-alpha systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"H. Rahmani, P. Noterdaeme, P. Petitjean, R. Srianand","submitted_at":"2010-09-07T20:16:17Z","abstract_excerpt":"Using a spectral stacking technique we searched for the average \\lya emission from high-z Damped \\lya (DLA) galaxies detected in the Sloan Digital Sky Survey QSO spectra. We used a sample of 341 DLAs of mean redshift <z>= 2.86 and log N(HI) > 20.62 to place a 3$\\sigma$ upper limit of 3.0 \\times 10^{-18} erg s^{-1} cm^{-2} on the \\lya flux emitted within $\\sim$1.5 arcsec (or 12 kpc) from the QSO line of sight. This corresponds to an average \\lya luminosity of < 2 \\times 10^{41} erg s^{-1} or 0.03 $L_\\star$(\\lya). This limit is deeper than the limit of most surveys for faint \\lya emitters. The l"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.1395","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"}