Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apjs...45..421p&link_type=abstract
Astrophysical Journal Supplement Series, vol. 45, Feb. 1981, p. 421-435.
Astronomy and Astrophysics
Astrophysics
26
Abundance, Dwarf Stars, Giant Stars, Iron, Stellar Spectra, Echelle Gratings, Hyperfine Structure, Line Spectra, Signal To Noise Ratios, Tables (Data), Visible Spectrum
Scientific paper
A consistent set of iron abundance analyses with respect to the sun is extended to a group of primarily cool metal-poor field stars: three giants, HD 21581, BD -1 deg 1792, and HD 210295, and six dwarfs, BD -17 deg 219, HD 13783, HD 23439 A and B, HD 25329, and BD -0 deg 4234. The use of the long-focus camera with the high-dispersion echelle grating on the 4-m echelle spectrograph of Kitt Peak National Observatory has made it possible to extend reliable abundance determinations to those elements represented only by very weak or very few lines. This and the internal accuracy of plus or minus 0.10 dex in the abundances deduced here for the dwarfs have aided a separate discussion of the relative distribution of the abundances of elements in metal-poor stars.
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