From Cosmic Dawn to Present-Day: Galaxy Formation and Evolution from Simulations

Abstract:

Observations of galaxies have revealed a puzzle of different properties seen from redshifts of z=10 or higher to present-day, using multi-wavebands and integral field spectroscopy to probe the stellar light, the gas, but also infer the dark matter content of galaxies at different epochs of time. However, as observations represent snapshots in time, connecting the puzzle pieces in their evolution requires simulations to bridge our understanding of galaxy formation at early and late times. We will present the results of this endeavour using one of the largest sets of fully hydrodynamical cosmological simulations, the Magneticum Pathfinder simulation suite and its adjacent simulations, going from the earliest formation of galaxies to their present-day counterparts. We will highlight how metals in the stars reveal a galaxy’s assembly history, show that most present day main sequence galaxies have experienced episodes of quiescence and rejuvenation, and demonstrate how kinematics and low surface brightness features are connected. We invite you to join us on this journey of galaxy formation through cosmic time, and discover how simulations and observations together shed light on how structures have formed in our Universe.

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