{"paper":{"title":"A Deep HST Search for Escaping Lyman Continuum Flux at z~1.3: Evidence for an Evolving Ionizing Emissivity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"(2) SSC, (3) STScI, (4) UMASS, (5) NOAO, (6) Catholic U, (7) Nottingham, (8) GSFC), Brian Siana (1), Carrie R. Bridge (8), Christopher J. Conselice (7), Claudia Scarlata (2) ((1) Caltech, Duilia F. de Mello (6), Harry I Teplitz (2), Henry C. Ferguson (3), James W. Colbert (2), Jonathan P. Gardner (8), Mark Dickinson (5), Mauro Giavalisco (4), Ranga-Ram Chary (2), Thomas M. Brown (3)","submitted_at":"2010-01-19T21:13:14Z","abstract_excerpt":"We have obtained deep Hubble Space Telescope far-UV images of 15 starburst galaxies at z~1.3 in the GOODS fields to search for escaping Lyman continuum photons. These are the deepest far-UV images m_{AB}=28.7, 3\\sigma, 1\" diameter) over this large an area (4.83 arcmin^2) and provide the best escape fraction constraints for any galaxy at any redshift. We do not detect any individual galaxies, with 3\\sigma limits to the Lyman Continuum (~700 \\AA) flux 50--149 times fainter (in f_nu) than the rest-frame UV (1500 \\AA) continuum fluxes. Correcting for the mean IGM attenuation (factor ~2), as well a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.3412","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"}