Fig. 7.
Top left panel: m814W versus (m275W−m814W) CMD of NGC 6752. Top right panel: m814W versus C410 diagram. In both panels, the red and blue solid lines are the fiducial lines along the RGB. The horizontal dashed lines indicate the magnitude bin considered to build the chromosome map shown in the bottom panel. The horizontal dotted line marks the m814W value at which the width of the RGB is measured (see text). Bottom panel: chromosome map (Δ(C410) versus Δ(m275W−m814W)) on the RGB. The dotted lines define boxes in which stars are considered either 1Pe (bottom right) or 2Pe (top left).
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