Modelling galaxy formation in a cosmological context
DIPC Seminars
- Speaker
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Camila Correa, Leiden University, Netherlands
- When
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2019/04/12
12:00 - Place
- Donostia International Physics Center
- Add to calendar
-
iCal
How galaxies form and evolve through cosmic time is one of the key questions
of modern astrophysics. Cosmological time- and length-scales are so large that
the evolution of individual galaxies cannot be directly observed. Only through
numerical simulations we can follow the emergence of cosmic structures within
the current cosmological paradigm. In this talk I will introduce cosmological
simulations of galaxy formation, I will discuss how the simulated galaxies’
mass growth depends on the rate of growth of their parent dark matter haloes.
Large-scale surveys have shown that most galaxies in the local Universe can be
divided into two distinct populations, that differ in colour, star formation
and morphology. I will show how the simulations reproduce these populations
and comment the relation between galaxies changing colour and morphology.
Cosmological simulations, however, are far from perfect. Feedback processes
are not numerically resolved, and we have to rely on analytic prescriptions
for these phenomena, the so-called ‘sub-grid physics’ modelling. The
challenging task now is to improve the sub-grid modelling and at the same time
increase the resolution of the simulations to unprecedented values. In the
last slides I will comment on the latests updates done in this front, as well
as on future research prospects.
Host: Raul Angulo