A Differential Study of the Oxygen Abundances in the Galactic Thin and Thick Disks

First results from a study into the abundance trends of oxygen in the Galactic thin and thick disks are presented. Oxygen abundances for 63nearby F and G dwarf stars, based on very high resolution spectra (R∼215 000) and high signal-to-noise (S/N>400) of the faint forbidden oxygen line at 6300A, have been determined. Our findings can be summarized as follows: 1) at [Fe/H] 0 without showing the leveling out that previously has been seen.