Abundances and kinematics of field halo and disk stars I: observational data and abundance analysis
Jun, 200041 pages
Published in:
- Astron.J. 120 (2000) 1841-1852
e-Print:
- astro-ph/0006260 [astro-ph]
DOI:
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Abstract: (arXiv)
We describe observations and abundance analysis of a high-resolution, high-S/N survey of 168 stars, most of which are metal-poor dwarfs. We follow a self-consistent LTE analysis technique to determine the stellar parameters and abundances, and estimate the effects of random and systematic uncertainties on the resulting abundances. Element-to-iron ratios are derived for key alpha, odd, Fe-peak, r- and s-process elements. Effects of Non-LTE on the analysis of Fe I lines are shown to be very small on the average. Spectroscopically determined surface gravities are derived that are generally close to those obtained from Hipparcos parallaxes.References(56)
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