Relations between forbidden line Fe/H and delta Mone for F and early-G stars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Early Stars, F Stars, G Stars, Hydrogen, Iron, Metallicity, Stellar Composition, Abundance, Astronomical Catalogs, Astronomical Photometry, Calibrating, Cepheid Variables, Data Sampling

Scientific paper

The new catalog of forbidden line Fe/H determinations of Cayrel de Strobel et al. (1985) have been used to calibrate forbidden line Fe/H in terms of the metal abundance parameter delta mone. Three relations were found corresponding to F1-F5 stars, F5-F8 stars, and F8-G2 stars. Quadratic equations were found necessary to represent the data of the two early groups. Serious errors in forbidden line Fe/H determinations of early metal-poor F stars can result if the previous linear calibrations are used.

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