{"paper":{"title":"Disentangling the physical parameters of gaseous nebulae and galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Akio K. Inoue, Daichi Kashino","submitted_at":"2018-12-17T18:22:52Z","abstract_excerpt":"We present an analysis to disentangle the connection between physical quantities that characterize the conditions of ionized HII regions -- metallicity ($Z$), ionization parameter ($U$), and electron density ($n_\\mathrm{e}$) -- and the global stellar mass ($M_\\ast$) and specific star formation rate ($\\mathrm{sSFR}=\\mathrm{SFR}/M_\\ast$) of the host galaxies. We construct composite spectra of galaxies at $0.027 \\le z \\le 0.25$ from Sloan Digital Sky Survey, separating the sample into bins of $M_\\ast$ and sSFR, and estimate the nebular conditions from the emission line flux ratios. Specially, met"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.06939","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"}