Iron and Carbon Abundances in Metal-Poor Dwarfs

Details Iron and Carbon Abundances in Metal-Poor Dwarfs Iron and Carbon Abundances in Metal-Poor Dwarfs

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...18110004r&link_type=abstract

American Astronomical Society, 181st AAS Meeting, #100.04; Bulletin of the American Astronomical Society, Vol. 24, p.1278

Astronomy and Astrophysics

Astronomy

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Scientific paper

We have determined iron and carbon abundances for field dwarfs with a range of [Fe/H] abundances to continue previous investigations of galactic nucleosynthesis and the homogeneity of mixing in the Galactic disk. These new data on metal-poor stars extend the sample coverage in order to explore [C/Fe] dependence on [Fe/H] and the possibility of [C/Fe] enhancement at values of [Fe/H] as low as -2. The data are high-resolution, high signal-to-noise Reticon observations made at the Canada-France-Hawaii Telescope coude. Abundances are based on measurements of eight Fe I lines and six high excitation C I lines in the spectral region lambda lambda 7065-7155 analyzed with model atmospheres. Our previous model atmospheres have been expanded to cover the cooler and more metal-poor stars in this sample.

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