Other
Scientific paper
May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pasp..102..507e&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 102, May 1990, p. 507-534.
Other
7
Dwarf Stars, G Stars, K Stars, Metallicity, Stellar Luminosity, Stellar Spectrophotometry, Abundance, High Dispersion Spectrographs, Interstellar Extinction, Stellar Evolution, Stellar Motions, Tables (Data), Photometry: Stellar, Motions: Abundances
Scientific paper
Five-hundred-twenty intermediate-band and (RI) observations of 227 stars and 430 observations in the DDO system of 213 stars in the Moore-Paddock-Wayman sample of evolved G and K stars are discussed in terms of reddening, metal abundance, and luminosity. The old disk stars with (R - I) between 0.290 and 0.425 mag (GO to K4) in the bright-star (BS) and Selected Areas (SA) samples, examined in previous papers of this series, as well as the present sample contain a subset of some 10% of the objects that have values of [Fe/H] determined from ΔM1 and from δCN differing by 0.2 dex or more. The available high-dispersion, spectroscopic results confirm the smaller values of [Fe/H] derived from δCN. The distortion of M1 may be caused by Sr II(4077) absorption. This subset of stars also shows a smaller dispersion in the space motion vectors than do the other members of the old disk population.
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