Cake Talk by William Baker
One of the most important findings so far with JWST has been the number of high-redshift quiescent galaxies uncovered. These galaxies are crucial tests of galaxy formation and evolutionary models, both in their abundances and implications for galaxy feedback processes. However, large samples of spectroscopically confirmed high-redshift galaxies have yet to be fully-explored. In addition, there are key questions about their progenitors and how they have built up their mass. In the first part of this talk I will present results from a recent exploration of spectroscopically confirmed massive quiescent galaxies as part of the JADES survey. I will discuss their number densities, formation and quenching times and AGN incidence. I will compare the observational findings to the FLAMINGO simulations, one of the largest simulations to-date in order to probe their abundances and mass build-up. In the second part of the talk I will explore high-redshift galaxy growth in a possible progenitor of high-z quiescent galaxies. I will use an approach based upon spatially resolved photometry with ForcePho to uncover the properties of a core and disc within a possible progenitor galaxy in the first 700 million years of the Universe’s existence.