{"paper":{"title":"The Rest-Frame Optical Spectroscopic Properties of Ly$\\alpha$-Emitters at $z\\sim2.5$: The Physical Origins of Strong Ly$\\alpha$ Emission","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Allison L. Strom, Charles C. Steidel, Gwen C. Rudie, Ryan F. Trainor","submitted_at":"2016-08-25T20:00:00Z","abstract_excerpt":"We present rest-frame optical spectra of 60 faint ($R_{AB}\\sim 27$; $L\\sim0.1 L_*$) Ly$\\alpha$-selected galaxies (LAEs) at $z\\approx2.56$. The average LAE is consistent with the extreme low-metallicity end of the continuum-selected galaxy distribution at $z\\approx2-3$. In particular, the LAEs have extremely high [OIII] $\\lambda$5008/H$\\beta$ ratios (log([OIII]/H$\\beta$) $\\sim$ 0.8) and low [NII] $\\lambda$6585/H$\\alpha$ ratios (log([NII]/H$\\alpha$) $<-1.15$). Using the [OIII] $\\lambda$4364 auroral line, we find that the star-forming regions in faint LAEs are characterized by high electron tempe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.07280","kind":"arxiv","version":2},"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"}