{"paper":{"title":"The Survey for Ionization in Neutral Gas Galaxies- II. The Star Formation Rate Density of the Local Universe","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"B.S. Koribalski, D.J. Hanish, E.V. Ryan-Weber, G.R. Meurer, H.C. Ferguson, J. Bland-Hawthorn, J.K. Werk, Jr., K.C. Freeman, L. Staveley-Smith, M.A. Dopita, M.A. Zwaan, M.E. Putman, M.J. Drinkwater, M.J. Meyer, M.S. Oey, M.T. Doyle, P.M. Knezek, R.C. Kennicutt, R.C. Smith, R.L. Webster, T.M. Heckman, V.A. Kilborn","submitted_at":"2006-04-20T20:25:01Z","abstract_excerpt":"We derive observed Halpha and R band luminosity densities of an HI-selected sample of nearby galaxies using the SINGG sample to be l_Halpha' = (9.4 +/- 1.8)e38 h_70 erg s^-1 Mpc^-3 for Halpha and l_R' = (4.4 +/- 0.7)e37 h_70 erg s^-1 A^-1 Mpc^-3 in the R band. This R band luminosity density is approximately 70% of that found by the Sloan Digital Sky Survey. This leads to a local star formation rate density of log(SFRD) = -1.80 +0.13/-0.07(random) +/- 0.03(systematic) + log(h_70) after applying a mean internal extinction correction of 0.82 magnitudes. The gas cycling time of this sample is foun"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0604442","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"}