{"paper":{"title":"Testing Star Formation Laws on Spatially Resolved Regions in a $z \\approx 4.3$ Starburst Galaxy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Christoph Federrath, Elisabete da Cunha, Emily Wisnioski, Enrico Di Teodoro, Itziar Aretxaga, Ken-ichi Tadaki, Min Yun, Piyush Sharda, Ryohei Kawabe","submitted_at":"2019-06-04T03:00:07Z","abstract_excerpt":"We probe the star formation properties of the gas in AzTEC-1 in the COSMOS field, one of the best resolved and brightest starburst galaxies at $z \\approx 4.3$, forming stars at a rate > 1000 $\\mathrm{M_{\\odot}}\\,\\mathrm{yr^{-1}}$. Using recent ALMA observations, we study star formation in the galaxy nucleus and an off-center star-forming clump and measure a median star formation rate (SFR) surface density of $\\Sigma^{\\mathrm{nucleus}}_{\\mathrm{SFR}} = 270\\pm54$ and $\\Sigma^{\\mathrm{sfclump}}_{\\mathrm{SFR}} = 170\\pm38\\,\\mathrm{M_{\\odot}}\\,\\mathrm{yr}^{-1}\\,\\mathrm{kpc}^{-2}$, respectively. Foll"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.01173","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"}