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Fig. 9.

image

MF606W − MF814W colour at MF606W = −1.5 versus [Fe/H] for DSEP, MIST, and BaSTI isochrones. The metallicities of the scaled-solar MIST isochrones are offset by −0.2 dex for comparison with the α-enhanced DSEP and BaSTI isochrones. Also shown are the RGB colours for EXT8 and the Galactic GCs in Fig. 6 (with M 15 marked as an open symbol owing to doubts about the reddening correction).

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