{"paper":{"title":"A GLIMPSE into the UV Continuum Slopes of the Faintest Galaxies in the Epoch of Reionization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Angela Adamo, Arghyadeep Basu, A. Saldana-Lopez, Damien Korber, Danielle A. Berg, Daniel Schaerer, Emma Giovinazzo, Hakim Atek, Harley Katz, Iryna Chemerynska, Jed McKinney, Jeremy Blaizot, John Chisholm, Julian B. Mu\\~noz, Kristen. B. W. McQuinn, Lukas J. Furtak, Michelle C. Jecmen, Miroslava Dessauges-Zavadsky, Pascal A. Oesch, Richard Pan, Rohan P. Naidu, Ryan Endsley, Seiji Fujimoto, Tiger Yu-Yang Hsiao, Vasily Kokorev, Yoshihisa Asada","submitted_at":"2026-01-27T19:04:08Z","abstract_excerpt":"As observations have yet to constrain the ionizing properties of the faintest (M$_{\\rm UV}$ > -16) galaxies, their contribution to cosmic reionization remains unclear. The rest-frame ultraviolet (UV) continuum slope ($\\beta$) is a powerful diagnostic of stellar populations and one of the few feasible indicators of the escape fraction of ionizing photons (f$_{\\rm esc}$) for such faint galaxies at high-redshift. Leveraging ultra-deep JWST/NIRCam GLIMPSE imaging of strong lensing field Abell S1063, we estimate UV continuum slopes of 555 galaxies at z $>$ 6 with absolute magnitudes down to M$_{\\rm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2601.19995","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2601.19995/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}