[Todos] IAFE -COLOQUIOS: "The cosmic neutral hydrogen distribution and its connection to galactic ecosystems"

["Area Difusión IAFE"]

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                   PRÓXIMO COLOQUIO DEL IAFE
                 Instituto de Astronomía y Física del Espacio
                           CONICET-UBA
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"The cosmic neutral hydrogen distribution and its connection to galactic
ecosystems"

                              Ali Rahmati
                           Univ. of Leiden, Netherlands
                        Jueves 12 de setiembre 2013 a las 14:00hs.
                            Aula del Edificio IAFE

In this talk, I will show that cosmological simulations of galaxy
formation that match the cosmic star formation history, are also capable
of reproducing the observed HI distribution when they are combined with
accurate radiative transfer calculations. I will discuss the impact of
different ionizing processes (i.e., the UV background, recombination
radiation, collisional ionization and local stellar radiation) on the HI
column density distribution over more than 12 billion years of evolution
from z = 5 to z = 0. I will also talk about the connection between the
so-called Damped Ly-alpha and Lyman limit systems and their host galaxies
in the simulations.


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Area Difusión IAFE
Susana Boudemont
susana en iafe.uba.ar
y
Liliana Opradolce
opra en iafe.uba.ar