Title: Stellar Populations in bulges and haloes of MW-type galaxies

Abstract:
We make use of a semi-analytic model of galaxy formation to study the chemical properties of 
the stellar populations (SPs) of bulges  and stellar haloes of Milky Way (MW) type galaxies. 
Our goal is to contribute to the understanding of the formation mechanisms of bulges and 
haloes in general and of the MW in particular. We compare spectroscopic and photometric 
stellar metallicity distributions with our model results and analize the alpha-Fe abundance ratios 
of SPs assuming different stellar initial mass functions.  We obtain good agreement when we 
compare with the spectroscopic data if we assume an integrated initial mass function.