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Fig. 1


Synthetic (top) vs. observed (bottom) CMD for the region in Sculptor dwarf spheoridal within rell < 0.183 deg. The synthetic CMD has a number of HB stars close to the observed number (see text for details of the simulation). The three boxes (red, intermediate, and blue) mark the three areas where star counts are compared with the simulations. The empty (blue) circles with a (red) dot represent the RR Lyrae stars found in the simulations. The observed RR Lyrae stars (as they are taken at random phase) are excluded from the bottom panel CMD. There are some non-pulsating stars in both synthetic and observed samples, located between the red and intermediate blue boxes (see text for details).

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