CEERS Key Paper. IV. JWST & HST data

We gather JWST data from the CEERS survey in the Extended Groth Strip, jointly with HST data, and analyze spatially resolved optical-to-mid-IR spectral energy distributions to estimate photometric redshifts in two dimensions and stellar population properties on a pixel-by-pixel basis for red galaxies detected by NIRCam.

We select 138 galaxies with F150W-F356W>1.5mag and F356W<27.5mag. The nature of these sources is threefold: (1) 71% are dusty star-forming galaxies (SFGs) at 2<z<6 with 9<logM_*_/M_{sun}_<11 and a variety of specific SFRs (<1 to >100 Gyr-1); (2) 18% are quiescent/dormant (i.e., subject to reignition/rejuvenation) galaxies (QGs) at 3<z<5, with logM_*_/M_{sun}_~10 and poststarburst mass-weighted ages (0.5-1.0Gyr); and (3) 11% are strong young starbursts with indications of high equivalent width emission lines (typically, [OIII]+H{beta}) at 6<z<7 (XELG-z6) and logM_*_/M_{sun}_~9.5.