Comprehensive abundance analysis of red giants in the open clusters NGC
  2527, 2682, 2482, 2539, 2335, 2251 and 2266
  We have analyzed high-resolution echelle spectra of red giant members for
seven open clusters in the Galactic anticentre direction to explore their
chemical positions. Cluster membership has been confirmed by radial velocity.
The spread in temperatures and gravities being very small among the red giants,
nearly the same stellar lines were employed for all stars thereby reducing the
abundance errors: the errors of the average abundance for a cluster were
generally in the 0.02 to 0.05 dex range. Our present sample covers
Galactocentric distances of 8.3 to 11.3 kpc and an age range of 0.2 to 4.3 Gyr.
A careful comparison of our results for the cluster NGC 2682 (M 67) to other
high-resolution abundance studies in the literature shows general good
agreement for almost all elements in common.
