IAFE 05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Milky Way type galaxies in numerical simulations of structure formation
Autor/es:
DE ROSSI, MARÍA EMILIA; TISSERA, PATRICIA BEATRIZ; DE LUCIA, GABRIELLA; KAUFFMANN, GUINEVERE
Lugar:
La Plata, Buenos Aires, Argentina
Reunión:
Congreso; Reunión Anual de la Asociación Argentina de Astronomía Nro. 52; 2009
Institución organizadora:
Asociación Argentina de Astronomía
Resumen:
In this work, we make use of the Millennium Simulation to
study the chemo-dynamical evolution of Milky Way type galaxies within
a LCDM cosmology. We find that these systems might be described
by a main progenitor which evolves by acquiring smaller substructures.
Supernovae feedback regulates the evolution of these galaxies principally
at high redshifts when the potential wells are shallower, while, at lower
redshifts, the efficiency of star formation is mainly determined by AGNs.
Our results suggest that the dispersion detected in the mass-metallicity
plane for these galaxies reveals differences in their formation histories.
However, statistically, we find evidences to support the Milky Way as
a typical Sb/Sc galaxy, constituting a suitable benchmark to constrain
numerical models of galaxy formation in the same mass range (De Rossi
et al. 2009).
