{"paper":{"title":"A hidden active galactic nucleus powering bright [O III] nebulae in a protocluster at $z=4.5$ revealed by JWST","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A.C. Posses, A. Ferrara, A.L. Faisst, A.M. Koekemoer, B. Alcalde Pampliega, C. Gruppioni, C.M. Casey, D.A. Riechers, D.B. Fisher, D. Liu, D. Vergani, E. da Cunha, E. Ibar, F. Pozzi, G.C. Jones, G. Zamorani, H. Inami, I. De Looze, J. Gonz\\'alez-L\\'opez, J. Li, J. Molina, J. Spilker, K.G.C. Vasan, K. Telikova, L. Guaita, L. Lee, L. Vallini, L. Yan, M. Aravena, M. B\\'ethermin, M. Boquien, M. Ginolfi, M. Rela\\~no, M. Romano, M. Solimano, N. Hathi, N.M. F\\\"orster-Schreiber, N. Sulzenauer, P. Cassata, P. Ogle, R. Herrera-Camus, R.J. Assef, R.L. Davies, S. Bovino, S. Fujimoto, S. Veilleux, T. D\\'iaz-Santos, V. Villanueva, W. Wang, X. Ding, Z. Liu","submitted_at":"2024-07-17T21:20:36Z","abstract_excerpt":"Galaxy protoclusters are sites of rapid growth, with a high density of massive galaxies driving elevated rates of star formation and accretion onto supermassive black holes. Here, we present new JWST/NIRSpec IFU observations of the J1000+0234 group at $z=4.54$, a dense region of a protocluster hosting a massive, dusty star forming galaxy (DSFG). The new data reveal two extended, high-equivalent-width (EW$_0>1000\\r{A}$) [O III] nebulae that appear at both sides of the DSFG along its minor axis (namely O3-N and O3-S). On one hand, the spectrum of O3-N shows a broad and blueshifted component with"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.13020","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/2407.13020/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"}