{"paper":{"title":"Spatially Resolved Gas Kinematics within a Ly$\\alpha$ Nebula: Evidence for Large-scale Rotation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"2), (2) UC Santa Barbara, (3) NOAO, 4) ((1) Dark Cosmology Centre, (4) Radcliffe Institute for Advanced Study), Arjun Dey (3, Crystal L. Martin (2), Moire K. M. Prescott (1","submitted_at":"2014-11-10T21:00:02Z","abstract_excerpt":"We use spatially extended measurements of Ly$\\alpha$ as well as less optically thick emission lines from an $\\approx$80 kpc Ly$\\alpha$ nebula at $z\\approx1.67$ to assess the role of resonant scattering and to disentangle kinematic signatures from Ly$\\alpha$ radiative transfer effects. We find that the Ly$\\alpha$, CIV, HeII, and CIII] emission lines all tell a similar story in this system, and that the kinematics are broadly consistent with large-scale rotation. First, the observed surface brightness profiles are similar in extent in all four lines, strongly favoring a picture in which the Ly$\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.2589","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"}