2 papers
astro-ph.GA2026
Galaxies in the first two billion years: Earlier formation and quenching with surface-density modulated star formation and feedback
Akash Vani, Mohammadreza Ayromlou, Guinevere Kauffmann +1
JWST has revealed massive, UV-bright, compact, and in some cases quenched galaxies in the first two billion years of cosmic history, challenging current galaxy formation models. We…
astro-ph.GA2025
When relics were made: vigorous stellar rotation and low dark matter content in the massive ultra-compact galaxy GS-9209 at z=4.66
Robert G. Pascalau, Francesco D'Eugenio, Sandro Tacchella +24
JWST uncovered a large number of massive quiescent galaxies (MQGs) at , which theoretical models struggle to reproduce. Explaining the number density of such objects requires…