{"paper":{"title":"Reddening of the BLR and NLR in AGN From a Systematic Analysis of Balmer Decrement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Jin-Ming Bai, Kai-Xing Lu, Xu-Liang Fan, Yinghe Zhao","submitted_at":"2018-11-27T15:48:03Z","abstract_excerpt":"We selected an active galactic nuclei (AGN) sample ($0 < z \\le 0.35$) from Sloan Digital Sky Survey Data Release 7, and measured the broad- (${\\rm H\\alpha^{b}/H\\beta^{b}}$) and narrow-line Balmer decrements (${\\rm H\\alpha^{n}/H\\beta^{n}}$) of 554 selected AGNs. We found that the distributions of Balmer decrements can be fitted by a Gaussian function and give the best estimates of ${\\rm H\\alpha^{b}/H\\beta^{b}} = 3.16$ with a standard deviation 0.07 dex, and ${\\rm H\\alpha^{n}/H\\beta^{n}} = 4.37$ with a standard deviation 0.10 dex. We inspected the distributions of ${\\rm H\\alpha^{b}/H\\beta^{b}}$ "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.11063","kind":"arxiv","version":2},"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"}