Abundances and kinematics of field halo and disk stars. I. Observational data and abundance analysis

We describe observations and abundance analysis of a high-resolution, high signal-to-noise ratio survey of 168 stars, most of which are metal-poor dwa rfs. We follow a self-consistent LTE analysis technique to determine the st ellar parameters and abundances, and we estimate the effects of random and systematic uncertainties on the resulting abundances. Element-to-iron ratio s are derived for key alpha-, odd-Z, Fe-peak, and r- and s-process elements . Effects of non-LTE on the analysis of Fe I lines are shown to be very sma ll on average. Spectroscopically determined surface gravities are derived t hat are quite close to those obtained from Hipparcos parallaxes.