Patrick N. O'Connor

How Quickly Did the Giants Form? Constraining the Formation Timescales of Massive Quiescent Galaxies at Cosmic Noon Using Chemical Evolution Modelling

Massive quiescent galaxies (MQGs; $M_\star \sim 10^{11} \, \mathrm{M_\odot}$) at cosmic noon ($z \sim 2$) host $\alpha$-enhanced stellar populations ($\mathrm{[Mg/Fe]} \sim 0.4 - 0.5$) at near-solar [Fe/H], implying rapid formation histories that spectral energy distribution (SED) fitting alone constrains poorly. To de...