{"paper":{"title":"COSMOS-Web: Galaxy Size and Surface Brightness Evolution at Rest-Frame 1.22 $\\mu$m Since $z=3$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Andreas L. Faisst, Gavin Leroy, Greta Toni, Lauro Moscardini, Maximilien Franco, Michaela Hirschmann, Rasha M. Samir, Si-Yue Yu, Taotao Fang, Xiaoxia Zhang","submitted_at":"2026-05-29T15:17:45Z","abstract_excerpt":"We present the evolution of galaxy size and surface brightness in the rest-frame $J$ band (1.22 $\\mu$m), tracing the stellar mass distribution, over $0.5 \\leq z \\leq 3$, using a sample of 15,420 galaxies with stellar masses $M_\\star=10^{10}$-$10^{11.5}\\ M_{\\odot}$ from the JWST COSMOS-Web survey. The rest-frame $J$-band effective radius ($R_{e,J}$) is obtained from previous measurements and mapped from the available JWST/NIRCam filters, while the surface brightness ($\\mu_J$) is corrected for dust extinction and cosmological dimming. At a characteristic mass of $M_\\star = 5 \\times 10^{10}\\ M_{\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.31415","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.31415/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"}