Abstract details

On the basis of large photometric and spectroscopic datasets, we investigated the general properties of the different sub-population of $\omega$ Cen in different regions of the color-magnitude diagram. In particular, we analysed the morphology, the structure and the chemical properties of the stellar populations of the system in the various stages of evolution of their stars. Such a large observational effort allowed us to constraint the characteristics of the origin and chemical evolution of this peculiar stellar system.