Color-color diagram for one of the early-type cluster galaxies in our sample. The red dot represents the color values at 0.1re, the yellow dot shows the color values at 0.5re, the green dot plots the color values at 1re, and finally, the blue dot shows color values at 2re. r625 − Y105 is more sensitive to age variations, but Y105 − H160 traces the metallicity. For this galaxy the innermost region between 0.1re and 0.5re is clearly age dominated, while at larger radii, a trend with metallicity takes over.
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