{"paper":{"title":"Tests of star formation metrics in the low metallicity galaxy NGC 5253 using ALMA observations of H30$\\alpha$ line emission","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"C. Dickinson, D. Espada, G. A. Fuller, G. J. Bendo, K. Nakanishi, M. J. D'Cruze, R. E. Miura, R. J. Beswick","submitted_at":"2017-07-19T16:22:53Z","abstract_excerpt":"We use Atacama Large Millimeter/submillimeter Array (ALMA) observations of H30$\\alpha$ (231.90 GHz) emission from the low metallicity dwarf galaxy NGC 5253 to measure the star formation rate (SFR) within the galaxy and to test the reliability of SFRs derived from other commonly-used metrics. The H30$\\alpha$ emission, which originates mainly from the central starburst, yields a photoionizing photon production rate of (1.9$\\pm$0.3)$\\times$10$^{52}$ s$^{-1}$ and an SFR of 0.087$\\pm$0.013 M$_\\odot$ yr$^{-1}$ based on conversions that account for the low metallicity of the galaxy and for stellar ro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.06184","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"}