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Fig. 3

image

Evolution of various quantities in the baseline scenario as a function of time, for five different radial zones, at 2 (red), 5 (green), 8 (thick blue), 11 (cyan) and 14 (magenta) kpc. Observational data for local surface densities of gas and stars (from Table 1) are indicated with filled circles at T = 12 Gyr.

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