Abstrakt
Fully self-consistent simulations of the formation of elliptical galaxies in the early Universe are performed assuming no dark matter. We start with a post-Big Bang pre-galactic gas cloud, allow it to collapse under self-gravity thereby following the star formation history and chemical enrichment.
Phantom of Ramses (POR) is a customized version of RAMSES and includes all its features but uses Milgromian dynamics. We compare these theoretical results with the empirical downsizing results obtained previously to infer the allowed initial conditions, given the observed properties of elliptical galaxies.