[Todos] CICLO DE COLOQUIOS CIENTIFICOS: Martes 25 de Noviembre de 2014 a las 14:00 hs.

["Area Difusión IAFE"]

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                   CICLO DE COLOQUIOS CIENTÍFICOS
                  Instituto de Astronomía y Física del Espacio
                                CONICET-UBA
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"The LCDM model at small scales: cusp-core dichotomy in the Local Group
galaxies."

                          Arianna Di Cintio
                    Universidad Autónoma de Madrid
             Martes 25 de Noviembre de 2014 a las 14:00 hs.
                      Aula del Edificio IAFE

Using a suite of simulated galaxies we investigate the effects of baryonic
feedback on the density profiles of dark matter haloes. The main result is
a clear dependence of the inner slope of the dark matter density profile
on the ratio between stellar-to-halo mass. The most cored galaxies are
expected to have Vrot~50km/s while massive spirals, with Vrot>150km/s, are
approaching again the NFW profile. This prediction for cusps vs cores can
be applied to the Local Group galaxies and it allows to reconcile at the
same time abundance matching prediction, the measured shallow dark matter
profile in some of the LG members, the "too big to fail" problem and the
star formation efficiency of such galaxies.