Corrected empirical limits show the most massive galaxies never exceed the theoretical baryonic maximum of 0.16 times halo virial mass, keeping observations consistent with LambdaCDM at all redshifts.
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JWST data shows half-light radii larger than half-mass radii in galaxies at 0.2<z<2.5, with mass-dependent differences, steeper size-mass slopes for light, and faster mass-size growth for star-forming galaxies at high redshift.
citing papers explorer
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Empirical estimates of how massive galaxies can be in {\Lambda}CDM
Corrected empirical limits show the most massive galaxies never exceed the theoretical baryonic maximum of 0.16 times halo virial mass, keeping observations consistent with LambdaCDM at all redshifts.
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Difference Between Half-mass Radius and Half-light Radius of Galaxies at 0.2 $< z <$ 2.5 Revealed by JWST/NIRCam Data
JWST data shows half-light radii larger than half-mass radii in galaxies at 0.2<z<2.5, with mass-dependent differences, steeper size-mass slopes for light, and faster mass-size growth for star-forming galaxies at high redshift.