[Todos] IAFE: JORNADA MARTES 7/12: "Formación y Evolución de Galaxias"

[difusion en iafe.uba.ar]

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                     JORNADA EN EL IAFE
               "Formación y Evolución de Galaxias"
                   MARTES 7 DE DICIEMBRE 2010.
             (organizada por el Grupo  de Astrofísica Numérica)
                Instituto de Astronomía y Física del Espacio
                     2010 - 40 aniversario IAFE
                          CONICET-UBA
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 COLOQUIOS:

 "The stellar and dark mass build-up of galaxies: downsizing vs upsizing "
                         Dr.Vladimir Avila- Reese
                       Instituto de Astronomía, UNAM
                      Aula del Edificio IAFE, 10:30hs.

 Abstract:
 A brief review on the emerging empirical picture of stellar mass (Ms)
 assembling of galaxies will be presented. A semi-empirical model that
 connects the Ms of observed galaxies at different redshifts with the
 corresponding growing individual halo mass, Mh, will be outlined and used
 to present an unified picture of the Ms and Mh assembling of galaxies as a
 function of mass. This picture explains naturally the emergence of a
 bimodality in color, star formation rate (SFR), and morphology for the
 galaxy population, and it implies that the Ms build-up deviates
 significantly from the dark halo growth (downsizing vs upsizing), both for
 galaxies that today end much larger than Ms* (archaeological or population
 downsizing) and much smaller than Ms* (downsizing in specific SFR) , where
 Ms*~3x10^10 Msun. A review of current predictions of the popular LCDM
 cosmological scenario will be presented, and compared with observations
 and the mentioned semi-empirical picture. Both semi-analytical models and
 N-body/hydrodynamical simulations of cosmic structure formation will be
 discussed. As the result of the comparison, some open issues and
 challenges in our understanding of galaxy formation and evolution will be
 outlined.


 " LCDM model at Galactic and Subgalactic Scales: Cosmology Meets Galactic
 Astronomy "
                           Dr. Octavio Valenzuela
                      Instituto de Astronomía, UNAM
                    Aula del Edificio IAFE, 11:30hs.

 Abstract:
 I will present a general picture of the status of some cosmological
 predictions at the scale of galaxies and below. I will pay some attention
 to the state of widely discussed issues like the core/cusp in dark matter
 halos as well as the substructure abundance. I will also discuss further
 attempts to constraint the LCDM predictions at the scale of galaxies.


                 "Assembly bias: clues from a LCDM cosmology "
                             Dr. Nelson Padilla
                  Pontificia Universidad Católica de Chile
                  Martes 7 de diciembre 2010, 14:00hs.
                         Aula del Edificio IAFE