Speaker
Description
The COLIBRE model of galaxy formation is the new flagship suite of simulations of the Virgo consortium. It builds upon years of development by a big team and is a substantial leap forward compared to the previous (and existing) generation of models. In brief, the key improvements are: (1) a modelling of the cold ISM phase, (2) a multi-grain, multi-size fully-coupled dust model, (3) the evolution of Hydrogen and Helium out of equilibrium, (4) the use of more resolution in the dark matter to suppress spurious heating (growth) of galaxies, (5) an upgraded physically-motivated multi-channel model for stellar feedback (6) a hybrid jet model for AGN, (7) an updated treatment of the evolution of globular clusters, (8) much-improved merger trees and structure identification, and (9) a model calibration strategy based on machine-learning techniques to inform the choices. This model is run in volumes substantially larger than previously available and at different resolutions allowing to connect high-redshift questions to late-time Universe surveys and precision cosmology.
In this talk, I will present the general model design and performance against observations at all redshifts, show results from the first series of papers published in the spring and discuss the role of the improved feedback model in shaping the galaxy population across cosmic time.
