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Fig. 1


Left and middle panels: optical CMD of the bulge field at (l,b) = (0, −6) obtained with WFI@2.2 m at La Silla. The vertical line marks the color cut applied to construct the histogram on the right (V − I > 1.2), where the two clumps are clearly visible. The bright red clump (BRC – red points) and faint red clump (FRC – blue points) spectroscopic target selection observed with IMACS on Magellan and with FLAMES-GIRAFFE on VLT are overplotted on the CMD in the left and middle panels, respectively.

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