Abstract

Differences in the metal content of dwarfs and giant stars belonging to the same open cluster have been reported in the literature. Such differences, if confirmed, can put into question recent results pointing towards a lack of a gas-giant planet metallicity correlation in samples of giant stars with planets. In this contribution we use our large database of stellar spectra collected during the last years to test whether there are or not differences between the metallicity distribution of nearby dwarfs and giants. We use the results to discuss our latest results concerning the metallicity distribution of evolved planet hosts.