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Fig. 5


Radial distributions of RGB stars with a different deviation δ(U − B) from the ridgeline of the RGB in the U − (U − B) diagram of NGC 3201. The continuous and long-dashed lines are the histograms of RGB stars with δ(U − B) > 0.05 and δ(U − B) <  − 0.05, respectively. 100 pixels approximately correspond to .

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