Iron abundances in G dwarfs

Details Iron abundances in G dwarfs Iron abundances in G dwarfs

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss.105...55c&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 105, no. 1, Oct. 1984, p. 55-65.

Astronomy and Astrophysics

Astrophysics

5

Dwarf Stars, G Stars, Iron, Metallicity, Stellar Composition, Oscillator Strengths, Spectral Line Width, Stellar Spectra, Stellar Temperature

Scientific paper

Spectroscopic observations of five G dwarfs located within 20 pc (20 LMi, 61 UMa, Beta CVn, Beta Com, and Xi Boo), obtained at wavelengths 390-500 nm with reciprocal dispersion 7.2 A/mm using the 1.52-m coude telescope at the Observatoire de Haute Provence, are reported. The equivalent widths of 90 Fe I lines are measured and listed; 30 unblended lines are selected for spectral synthesis on the basis of the Utrecht Solar Atlas and the solar spectrum of Moore et al. (1966); effective temperatures and surface gravities are determined; and abundance ratios are obtained by model-atmosphere calculations. The results are presented in tables and discussed. The Fe/H ratios of the five stars are found to be -0.11, +0.03, -0.03, +0.06, and +0.19, respectively.

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