Bohn, T.Inami, H.Diaz-Santos, T.Armus, L.Linden, S.T.Vivian, U.Surace, J.Larson, K.L.Evans, A.S.Hoshioka, S.Lai, T.Song, Y.Mazzarella, J.M.Barcos-Munoz, L.Charmandaris, V.Howell, J.H.Medling, A.M.Privon, G.C.Rich, J.A.Stierwalt, S.Aalto, S.Böker, T.Brown, M.J.I.Iwasawa, KazushiMalkan, M.A.van der Werf ,P.P.Appleton, P.Hayward, C.C.Kemper, F.Law, D.Marshall, J.Murphy, E.J.Sanders, D.2025-01-312025-01-3120232041-8205https://hdl.handle.net/2445/218393We present James Webb Space Telescope (JWST) imaging of NGC 7469 with the Near-Infrared Camera and the Mid-InfraRed Instrument. NGC 7469 is a nearby, z = 0.01627, luminous infrared galaxy that hosts both a Seyfert Type-1.5 nucleus and a circumnuclear starburst ring with a radius of ∼0.5 kpc. The new near-infrared (NIR) JWST imaging reveals 66 star-forming regions, 37 of which were not detected by Hubble Space Telescope (HST) observations. Twenty-eight of the 37 sources have very red NIR colors that indicate obscurations up to Av ∼ 7 and a contribution of at least 25% from hot dust emission to the 4.4 μm band. Their NIR colors are also consistent with young (<5 Myr) stellar populations and more than half of them are coincident with the mid-infrared (MIR) emission peaks. These younger, dusty star-forming regions account for ∼6% and ∼17% of the total 1.5 and 4.4 μm luminosity of the starburst ring, respectively. Thanks to JWST, we find a significant number of young dusty sources that were previously unseen due to dust extinction. The newly identified 28 young sources are a significant increase compared to the number of HST-detected young sources (4–5). This makes the total percentage of the young population rise from ∼15% to 48%. These results illustrate the effectiveness of JWST in identifying and characterizing previously hidden star formation in the densest star-forming environments around active galactic nuclei (AGN).1 p.application/pdfeng(c) American Astronomical Society, 2023GalàxiesEstelsAstronomia infrarojaGalaxiesStarsInfrared astronomyinfo:eu-repo/semantics/article7539042025-01-31info:eu-repo/semantics/openAccess