Figure 10 from

Image Details

View Article Bookmark & Share

Choose export citation format:

Export Citation

Hi-Resolution Export to PDF PPT Format

Evidence for a Shallow Evolution in the Volume Densities of Massive Galaxies at z = 4–8 from CEERS

Authors: Katherine Chworowsky, Steven L. Finkelstein, Michael Boylan-Kolchin, Elizabeth J. McGrath, Kartheik G. Iyer, Casey Papovich, Mark Dickinson, Anthony J. Taylor, L. Y. Aaron Yung, Pablo Arrabal Haro, Micaela B. Bagley, Bren E. Backhaus, Rachana Bhatawdekar, Yingjie Cheng, Nikko J. Cleri, Justin W. Cole, M. C. Cooper, Luca Costantin, Avishai Dekel, Maximilien Franco, Seiji Fujimoto, Christopher C. Hayward, Benne W. Holwerda, Marc Huertas-Company, Michaela Hirschmann, Taylor A. Hutchison, Anton M. Koekemoer, Rebecca L. Larson, Zhaozhou Li, Arianna S. Long, Ray A. Lucas, Nor Pirzkal, Giulia Rodighiero, Rachel S. Somerville, Brittany N. Vanderhoof, Alexander de la Vega, Stephen M. Wilkins, Guang Yang, Jorge A. Zavala

Katherine Chworowsky et al 2024 The Astronomical Journal 168 .

Provider: AAS Journals

Caption: Figure 10.

(a) The evolution in baryon conversion efficiency given a constant mass-to-light ratio (M/L) needed to match our observations of massive galaxies (Section 5.3.1). (b) The factor change in the mass-to-light ratio required to match the number densities of ${\mathrm{log}}_{10}({M}_{\star }/{M}_{\odot })\gt 10$ expected, assuming a constant efficiency of ϵ = 0.14. We find that the observed cumulative number densities in CEERS follow that expected from a constant baryon conversion efficiency of ∼0.14 up to a redshift of z ∼ 4, before which we find an excess of ${\mathrm{log}}_{10}({M}_{\star }/{M}_{\odot })\gt 10$ galaxies, potentially indicating that the global baryon conversion efficiency is higher or that the mass-to-light ratio is lower in the early Universe than at lower redshift.

Copyright and Terms & Conditions

Additional terms of reuse

Other Images in This Article

Copyright and Terms & Conditions