Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...191..237p&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 191, no. 2, Feb. 1988, p. 237-247.
Astronomy and Astrophysics
Astrophysics
20
Dwarf Stars, G Stars, K Stars, Spectrum Analysis, Stellar Spectra, Abundance, Chromosphere, Iron, Metallicity, Stellar Atmospheres
Scientific paper
High-S/N spectra of HD 115617, HD 125072, HD 156274, and HD 156384, obtained at 6165, 6560, 6715, and 8520 A with spectral resolution about 0.13 A using a coude echelle spectrograph on the 1.4-m coude auxiliary telescope at ESO in May 1982, are reported. The data are presented in extensive tables and graphs and characterized in detail, applying the stellar-atmosphere models of Gustafsson et al. (1975). The four stars are assigned to the old disk population on the basis of their space velocities and low chromospheric activity, and the range of metallicities (differential logarithmic Fe/H abundance relative to the sun), from -0.59 to +0.26 dex, is shown to be near the highest value expected for a random sample of four such stars and about 10 times the rms error for each object.
Cayrel de Strobel G.
Dennefeld Michel
Perrin M.-N.
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