{"paper":{"title":"Constraints on the Broad Line Region Properties and Extinction in Local Seyferts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Contursi, A. Janssen, Allan Schnorr-M\\\"uller, A. Sternberg, D. Lutz, D. Rosario, E.K.S. Hicks, E. Sturm, F. M\\\"uller-S\\'anchez, G. Orban de Xivry, J. Graci\\'a-Carpio, K.T. Korista, L. Burtscher, L. Tacconi, M. Koss, M. Schartmann, M.-Y. Lin, O. A. Ulrich, R.A. Riffel, R. Genzel, R.I. Davies, R. Riffel, S. Veilleux, T. Storchi-Bergmann, W. Maciejewski","submitted_at":"2016-07-25T15:13:38Z","abstract_excerpt":"We use high spectral resolution (R > 8000) data covering 3800-13000\\r{A} to study the physical conditions of the broad line region (BLR) of nine nearby Seyfert 1 galaxies. Up to six broad HI lines are present in each spectrum. A comparison - for the first time using simultaneous optical to near-infrared observations - to photoionisation calculations with our devised simple scheme yields the extinction to the BLR at the same time as determining the density and photon flux, and hence distance from the nucleus, of the emitting gas. This points to a typical density for the HI emitting gas of 10$^{"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.07308","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"}