The color–magnitude distribution (I vs. (V − I)) for the measured stars in the M 87 inner halo. Data are plotted in four concentric annuli in projected galactocentric distance. These annuli cover a total radial range in Rgc from 7.9 kpc to 12.5 kpc. The horizontal dashed line in each panel shows the predicted level of the RGB tip at MI = −4.05 (see text).
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