JWST IFU spectroscopy of three ultra-massive quiescent galaxies at z~3.5 shows young central ages with elevated [α/Fe] and mixed age/abundance gradients, indicating rapid star formation before quenching and the need for alpha-enhanced models.
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MAGAZ3NE: Spatially Resolved Ages and Chemical Abundances of Ultra-Massive Quiescent Galaxies at z $\sim$ 3.5 using JWST/NIRSpec IFU
JWST IFU spectroscopy of three ultra-massive quiescent galaxies at z~3.5 shows young central ages with elevated [α/Fe] and mixed age/abundance gradients, indicating rapid star formation before quenching and the need for alpha-enhanced models.