{"paper":{"title":"Near-Infrared Spectroscopy of Galaxies During Reionization: Measuring C$\\,$III] in a Galaxy at $\\mathbf{z=7.5}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"(2) UT Austin, (3) NOAO, (4) Ben-Gurion Univ. of the Negev, (5) Univ. College London, (6) NASA Goddard, 7), (7) Arizona State Univ.), Adi Zitrin (4), Casey Papovich (1), Guido Roberts-Borsani (5), Intae Jung (2), James Rhoads (6, Mark Dickinson (3), Mimi Song (6), M Univ., Richard Ellis (5), Sangeeta Malhotra (6, Steven L. Finkelstein (2), Taylor A. Hutchison (1), Vithal Tilvi (7) ((1) Texas A","submitted_at":"2019-05-21T18:00:03Z","abstract_excerpt":"We present Keck/MOSFIRE $H$-band spectroscopy targeting C$\\,$III] $\\lambda$1907,1909 in a $z=7.5056$ galaxy previously identified via Ly$\\alpha$ emission. We detect strong line emission at $1.621\\pm0.002\\,\\mu$m with a line flux of ($2.63\\pm0.52$)$\\times10^{-18}$ erg s$^{-1}$ cm$^{-2}$. We tentatively identify this line as [C$\\,$III] $\\lambda$1907, but we are unable to detect C$\\,$III] $\\lambda$1909 owing to sky emission at the expected location. This gives a galaxy systemic redshift, $z_{sys}=7.5032\\pm0.0003$, with a velocity offset to Ly$\\alpha$ of $\\Delta$v$_{Ly\\alpha}$ = $88\\pm27$ km s$^{-1"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.08812","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"}