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1999MNRAS.302...22C - Mon. Not. R. Astron. Soc., 302, 22-36 (1999/January-1)
Homogeneous photometry and metal abundances for a large sample of Hipparcos metal-poor stars.
CLEMENTINI G., GRATTON R.G., CARRETTA E. and SNEDEN C.
Abstract (from CDS):
The programme stars have metal abundances in the range -2.5<[Fe/H]<0.2. The spectroscopic observational data set consists of high-dispersion (15 000<R<60 000), high S/N (>200) spectra obtained at the Asiago and McDonald Observatories for 66 stars. The analysis is carried out following the same precepts as those used in previous papers of this series, and includes corrections for departures from LTE in the formation of the O lines. The main results are: (i) the equilibrium of ionization of Fe is well satisfied in late F–early K dwarfs; (ii) oxygen and α-elements are overabundant by ∼0.3 dex.
This large homogeneous abundance data set has been used to recalibrate the abundance scales of Schuster & Nissen, Ryan & Norris and Carney et al. (1994).
Abstract Copyright: 1998, Royal Astronomical Society
Journal keyword(s): astrometry - stars: abundances - stars: fundamental parameters
Simbad objects: 77
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