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Fig. 14
Log g values vs. i−J (upper panel) and i−K colors (bottom panel) for a set of solar metallicity PISA isochrones with ages from 0.5 Myr to 15 Gyr. Different colors indicate different effective temperature values of M-type stars from 3000 K (violet lines) up to 4000 K (red lines) with a step of 50 k.
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