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Fig. 12

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Selection box (continuous line) and weight pattern (in greyscale) adopted for the density maps shown in Fig. 11. Higher weights corresponds to darker grey areas, going from 0.1 (lightest grey) to 1.0 (darkest grey), with step 0.1. Weight = 0.0 is assigned to stars outside the grey area, hence these stars do not contribute to the density estimate.

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