Justin Read
Department of Physics, University of Surrey (Guildford, Royaume-Uni)
Amphithéâtre Henri Mineur, Institut d'Astrophysique de Paris
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| « The Emergence of Dwarf Galaxies, Star Clusters and Something In-between » |
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Justin Read |
| Over the past five years, numerical simulations of galaxy formation have quietly passed a key milestone. The latest cosmological simulations are now able to resolve the sites of star formation and the impact of individual stellar feedback events. In this talk, I explain how this has led to a new level of realism that makes simulations more predictive. I present the latest results from the "EDGE" simulation project (with a mass and spatial resolution of ~120 Msun and ~3pc, respectively), focussed on modelling the very smallest stellar systems in the Universe. I show how realistic dwarf galaxies and dense star clusters - globular clusters and nuclear star clusters - naturally emerge in EDGE. I present a new semi-empirical tool for galaxy formation, DarkLight, that allows us to scale up the results from a small number of high resolution EDGE simulations to full galaxy populations. And, I present the testable predictions that our EDGE simulations make for new objects that should be found in up-coming surveys. Finally, I conclude with a discussion of where the field is heading next. |
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vendredi 3 mai 2024 - 11:00 Amphithéâtre Henri Mineur, Institut d'Astrophysique de Paris |
| Page web du séminaire / Seminar's webpage |