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Fig. 13


The distribution of stars on the red giant branch for different elliptical radii. A metal-rich isochrone ([Fe/H]  ≈  −1.10, [α/Fe]  ≈  −0.10, age = 7 Gyr, red) and metal-poor isochrone ([Fe/H]  ≈  −2.45, [α/Fe]  ≈  0.40, age = 14 Gyr, blue) from the Dartmouth Stellar Evolution Database have been overlaid in each panel.

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