Fig. 1
HR diagram including all of our targets. The red open circles correspond to RGB stars, while the blue filled triangles to HB stars. Different evolutionary tracks (Salasnich et al. 2000) are overplotted for stars with 1.1 M⊙, 2.0 M⊙ and 3.0 M⊙ (line pairs from bottom to top). The solid lines correspond to models with [Fe/H] = 0.0 and the dashed lines to [Fe/H] = 0.32.
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