The baryonic accretion rates and dynamical decomposition of simulated galaxies in “Constrained Local Universe Simulations"

BENÍTEZ LLAMBAY, ALEJANDRO; ABADI, MARIO G.

Buenos Aires

Workshop; Second Workshop on Numerical and Observational Astrophysics: From the First Structures to the Universe Today; 2011

Instituto de Astronomía y Física del Espacio

Abstract: Galaxies are complex dynamical systems formed by different stellar components like bulge, thin disk, thick disk, bar, spiral arms, stellar halo, spheroid, etc. At redshift z=0, two different stellar components are easily identified: an old centrally concentrated massive spheroid supported by velocity dispersion with no net rotation and a young less massive disk largely supported by rotation. The decomposition of a galaxy in these different components allows to trace back the origin, formation and evolution of each constitutive galactic piece. In this work, we present the dynamical decomposition of simulated galaxies in “Constrained Local UniversE Simulations” (CLUES) (http://www.clues-project.org) which are a set of constrained simulations of the Local Group designed to be used as a numerical laboratory of the current paradigm. We also analyze the gas accretion rates of these simulated galaxies and compare them with the dark matter counterpart.