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Fig. 8.

image

Density map of the YOUNG sample obtained with TOPCAT. The axis are RA and Dec (in degrees) in sin projection. North is up and east is to the left. The colour is proportional to the square root of the local density; darker tones of blue traces higher density levels. The two asterisk symbols superimposed on the map mark the position of the centre of the bulge and of the dynamical centre of the H I disc (from Rownd et al. 1994), from north to south, respectively.

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