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Fig. 11

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Density map obtained from RGB star counts. The levels of grey correspond to density of 3, 5, 10, 20, 40, and 80σ above the background, from the lightest to the darkest tone of grey. All the RGB stars falling in the selection box defined in Fig. 9 are also plotted (as dots) to provide a direct illustration of the effects of the footprint of the mosaic.

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