The Complete CEERS Early Universe Galaxy Sample: A Surprisingly Slow Evolution of the Space Density of Bright Galaxies at z ∼ 8.5–14.5

Finkelstein, Steven L.; Leung, Gene C. K.; Bagley, Micaela B.; Dickinson, Mark; Ferguson, Henry C.; Papovich, Casey; Akins, Hollis B.; Haro, Pablo Arrabal; Davé, Romeel; Dekel, Avishai; Kartaltepe, Jeyhan S.; Kocevski, Dale D.; Koekemoer, Anton M.; Pirzkal, Nor; Somerville, Rachel S.; Yung, L. Y. Aaron; Amorín, R.; Backhaus, Bren E.; Behroozi, Peter; Bisigello, Laura; Bromm, Volker; Casey, Caitlin M.; Ortiz, Óscar A. Chávez; Cheng, Y.; Chworowsky, Katherine; Cleri, Nikko J.; Cooper, Michael C.; Davis, Kelcey; Vega, Alexander de la; Elbaz, D.; Franco, Maximilien; Fontana, A.; Fujimoto, Seiji; Giavalisco, Mauro; Grogin, Norman A.; Holwerda, Benne W.; Hirschmann, Michaela; Iyer, Kartheik G.; Jogee, Shardha; Jung, Intae; Larson, Rebecca L.; Lucas, Ray A.; Mobasher, Bahram; Morales, Alexa M.; Morley, Caroline; Mukherjee, Sagnick; Pérez‐González, Pablo G.; Ravindranath, Swara; Rodighiero, Giulia; Rowland, Melanie J.; Tacchella, Sandro; Taylor, Anthony J.; Trump, Jonathan R.; Wilkins, Stephen M.

doi:10.3847/2041-8213/ad4495

articleThe Astrophysical Journal LettersJun 20, 2024GOLD OA

The Complete CEERS Early Universe Galaxy Sample: A Surprisingly Slow Evolution of the Space Density of Bright Galaxies at z ∼ 8.5–14.5

SLSteven L. Finkelstein GCGene C. K. Leung MBMicaela B. Bagley MDMark Dickinson HCHenry C. Ferguson

The University of Texas at Austin · NSF NOIRLab · +47 more institutions

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Abstract

Abstract We present a sample of 88 candidate z ∼ 8.5–14.5 galaxies selected from the completed NIRCam imaging from the Cosmic Evolution Early Release Science survey. These data cover ∼90 arcmin 2 (10 NIRCam pointings) in six broadband imaging filters and one medium-band imaging filter. With this sample we confirm at higher confidence early JWST conclusions that bright galaxies in this epoch are more abundant than predicted by most theoretical models. We construct the rest-frame ultraviolet luminosity functions at z ∼ 9, 11, and 14 and show that the space density of bright ( M UV = −20) galaxies changes only modestly from z ∼ 14 to z ∼ 9, compared to a steeper increase from z ∼ 8 to z ∼ 4. While our candidates…

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Keywords

Physics
Astrophysics
Galaxy
Redshift
Luminosity function
Galaxy formation and evolution
Astronomy
Star formation

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