Stellar Morphology of Optically Dark or Faint Galaxies at z>3 with JWST

2025/12/17 by Ganguly, Arpita, Mengyuan Xiao, Xiao, Mengyuan +23
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #Electrical and Electromagnetic Research #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena

paper · pdf · doi:10.48550/arxiv.2512.15127

openalex publication_date 2025/12/17 · openalex created_date 2025/12/19 · openalex updated_date 2026/08/03

Abstract

JWST offers an unprecedented view of optically dark or faint galaxies (OFGs), previously missed by HST. They are likely massive, heavily dust-obscured star-forming galaxies (SFGs) that substantially contribute to the cosmic SFR density at z>3. To identify drivers of their high dust attenuation and their role in early universe galaxy evolution, we analyse the stellar morphology of 65 OFGs (from 1892 SFGs at 3

Citations

• The Physical Properties and Morphologies of Faint Dusty Star-forming Galaxies Identified with JWST
• Galaxy Size and Mass Build-up in the First 2 Gyrs of Cosmic History from Multi-Wavelength JWST NIRCam Imaging
• COSMOS-Web: An Overview of the JWST Cosmic Origins Survey

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