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February 27, 2026The Astrophysical Journal Letters4 citationsOpen Access

A Morphology Catalog of Galaxies in CEERS: Evolution in the Size and Color Gradients of Galaxies Since Cosmic Dawn

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EMElizabeth J. McGrathSFSteven L. FinkelsteinGBGuillermo Barro

Key Points

  • The aim is to catalog galaxy morphology parameters and analyze evolution in size and color gradients across cosmic time.
  • Measured morphological parameters of 53,885 galaxies using NIRCam imaging in six filters.
  • Provided a public catalog including Sérsic indices, effective axes, axis ratios, and magnitudes.
  • Compared measurements with prior Hubble observations in the CANDELS field for validation.
  • Analyzed size-mass relation and color gradients of galaxies across various redshifts.
  • Galaxy sizes agree with past measurements to within 0.09 dex; Sérsic indices to within 0.13 dex.
  • Found strong mass dependence of color gradients for late-type galaxies, no redshift evolution observed.
  • Color gradients for early-type galaxies remain nearly flat with no mass dependence.
  • Structural measurements of galaxies are accurate to 20% or better for most galaxies with F356W < 27.0 mag.

Abstract

Abstract We present measurements of morphological parameters from fitting 53,885 galaxies detected to a magnitude limit of F356W 2.5), the color gradients are nearly flat with no dependence on mass, indicating that the stellar populations are more uniform throughout. The structural measurements presented are accurate to 20% or better for most galaxies with F356W < 27.0 mag and will enable further studies of galaxy morphology to z ∼ 10.

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Cite This Study

McGrath et al. (2026) studied this question.

synapsesocial.com/papers/69a134b8ed1d949a99abe355https://doi.org/10.3847/2041-8213/ae3da2
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