TALKS ST EL L E Raffaele Gratton INAF - Osservatorio Astronomico di Padova Stellar abundances and the chemical evolution of stellar systems: the Italian contribution The chemical composition of stellar syst the last few years, exciting results have and efficient spectrographs. ... Once the observations of all clusters will be completed for at least one season, we plan to better describe and model the evolution of the stellar angular momentum from the PMS to the TAMS. ...