{"paper":{"title":"FEAST: JWST uncovers the emerging timescales of young star clusters in M83","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Ahmad A. Ali, Alex Pedrini, Alice Knutas, Ana Duarte-Cabral, Angela Adamo, Anne S.M. Buckner, Arjan Bik, Benjamin Gregg, Bruce G. Elmegreen, Daniela Calzetti, Drew Lapeer, Elena Sabbi, Eric P. Andersson, Giacomo Bortolini, G\\\"oran \\\"Ostlin, Helena Faustino Vieira, Jenna E. Ryon, John S. Gallagher, Kathryn Grasha, Kelsey Johnson, Linda J. Smith, Matteo Messa, Monica Tosi, Sean T. Linden, Thomas S.-Y. Lai, Varun Bajaj","submitted_at":"2025-05-13T18:01:34Z","abstract_excerpt":"We present JWST NIRCam observations of the emerging young star clusters (eYSCs) detected in the nearby spiral galaxy M83. The NIRcam mosaic encompasses the nuclear starburst, the bar, and the inner spiral arms. The eYSCs, detected in Pa$\\alpha$ and Br$\\alpha$ maps, have been largely missed in previous optical campaigns of young star clusters (YSCs). We distinguish between eYSCI, if they also have compact 3.3~$\\mu$m PAH emission associated to them, and eYSCII, if they only appear as compact Pa$\\alpha$ emitters. We find that the variations in the 3.3~$\\mu$m PAH feature are consistent with an evo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.08874","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/2505.08874/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"}