Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apjs...57..389l&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 57, Feb. 1985, p. 389-404.
Astronomy and Astrophysics
Astrophysics
46
Abundance, Atmospheric Composition, Dwarf Stars, Stellar Atmospheres, Astronomical Catalogs, Errors, G Stars, Metallicity, Stellar Gravitation, Stellar Spectrophotometry
Scientific paper
Atmospheric parameters have been determined for a sample of 116 field dwarf stars, plus 10 faint field giants and three Hyades dwarfs. Effective temperatures were found from new R-I photometry, plus R-I, b-y, and V-K colors and some spectrophotometric scans from the literature. Surface gravities and metallicities were derived from Stromgren photometry from the literature and intermediate dispersion spectra. Empirical spectral indices and the Stromgren photometry were calibrated using results of published high dispersion abundance analyses, supplemented with gravities based on parallax data and estimated masses. Stromgren c(1) and m(1) indices were found to remain useful for G-type stars. Estimated random errors in the final parameters for an individual star are + or - 70 K in T(eff), + or - 0.15 in log g, and + or - 0.10 in Fe/H.
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