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Fig. 1

image

Spatial distribution of the initial sample (black dots) overlaid on our WFI photometry (grey circles). The half-light radius (from Harris 1996; 2010 edition) is also reported and plotted as a red line. Note that the stars plotted here are all the stars retrieved from the CASU archive before Galactic contaminants were removed and sample selection was made (see text).

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