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Fig. 4

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CMDs for Sex A (upper panels) and Sex B (lower panels) in different radial ranges. The red giant branches are compared with the ridge lines of the globular clusters M92 ([Fe/H] = −2.31) and M3 ([Fe/H] = −1.50), from left to right. In all the panels stars are plotted as black points in regions of the CMD with few stars and as grey squares otherwise, with the scale of grey proportional to the local density in the CMD. Lighter shades of grey correspond to higher density.

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