Two sets of Y2 stellar isochrones from Demarque et al. (2004), one for [Fe/H] = 0.05 (solid lines) and one for [Fe/H] = 0.39 (dashed lines). Both sets are for [α/Fe] = 0 and ages of 0.2, 0.4, 1, 2, 4, 8, and 10 Gyr (going from left to right along the log g = 4.3 line). The estimated Teff and log g of C4780 A are marked by a star and their uncertainties are marked by an ellipse.
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