Abundances and Kinematics of Field Halo and Disk Stars. I. Observational Data and Abundance Analysis
Top Cited Papers
Open Access
- 1 October 2000
- journal article
- research article
- Published by American Astronomical Society in The Astronomical Journal
- Vol. 120 (4) , 1841-1852
- https://doi.org/10.1086/301548
Abstract
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 dwarfs. We follow a self-consistent LTE analysis technique to determine the stellar parameters and abundances, and we estimate the effects of random and systematic uncertainties on the resulting abundances. Element-to-iron ratios are derived for key α-, 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 small on average. Spectroscopically determined surface gravities are derived that are quite close to those obtained from Hipparcos parallaxes.Keywords
All Related Versions
This publication has 45 references indexed in Scilit:
- A Consistency Test of Spectroscopic Gravities for Late‐Type StarsThe Astrophysical Journal, 1999
- Kinematics of metal-poor stars in the galaxyThe Astrophysical Journal Supplement Series, 1995
- The chemical compositions of two nitrogen-rich, metal-poor, halo dwarf starsThe Astronomical Journal, 1994
- Abundances of the elements: Meteoritic and solarGeochimica et Cosmochimica Acta, 1989
- Measurement of relative oscillator strengths for Ti I - IV. Transitions from levels of excitation energy between 1.42 and 2.31 eVMonthly Notices of the Royal Astronomical Society, 1986
- Measurement of relative oscillator strengths for Cr I lines – I. Measures for transitions from levels a7S3 (0.00 eV), a5S2 (0.94 eV) and a5D0−4 (0.96−1.03 eV)Monthly Notices of the Royal Astronomical Society, 1984
- Precision measurement of relative oscillator strengths for Ti I - I. Transitions from levels a3 F2 (0.00 eV) and a3 F3 (0.02 eV) and a3 F4 (0.05 eV) measured with an accuracy of 0.5 per centMonthly Notices of the Royal Astronomical Society, 1982
- Precision measurement of relative oscillator strengths - VIII. Measures of Fe I transitions from levels a3F2-4 (1.49-1.61 eV) with an accuracy of 1 per centMonthly Notices of the Royal Astronomical Society, 1980
- Precision measurement of relative oscillator strengths. - VI. Measures of Fe I transitions from levels a5 F1 - 5 (0.86-1.01 eV) with an accuracy of 0.5 per centMonthly Notices of the Royal Astronomical Society, 1979
- Precision measurement of relative oscillator strengths - IV. Attainment of 0.5 per cent accuracy. Fe I transitions from levels a5 D0-4 (0.00-0.12 eV)Monthly Notices of the Royal Astronomical Society, 1979