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We present a study of the stellar parameters and iron abundances of 18 giantstars in 6 open clusters. The analysis was based on high-resolution andhigh-S/N spectra obtained with the UVES spectrograph (VLT-UT2). The resultscomplement our previous study where 13 clusters were already analyzed. Thetotal sample of 18 clusters is part of a program to search for planets aroundgiant stars. The results show that the 18 clusters cover a metallicity rangebetween -0.23 and +0.23 dex. Together with the derivation of the stellarmasses, these metallicities will allow the metallicity and mass effects to bedisentangled when analyzing the frequency of planets as a function of thesestellar parameters.

Metallicities for 6 nearby open clusters from high-resolution spectra of giant stars. [Fe/H] values for a planet search sample