Fig. 1
HR diagram showing the position of the four host stars (filled circles). The small black dots represent the 37 targets in common to the EXPRESS and PPPS. The solid lines correspond to 1.0 M⊙ and 1.5 M⊙ PARSEC evolutionary tracks at solar metallicity (Bressan et al. 2012). The dashed line represents the base of the RGB, while the dotted line corresponds to the lower luminosity bump region.
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