Fig. 2
Evolution of the Li abundance in the gas for three radial zones, at 4 (blue), 8 (red) and 12 (green) kpc from the Galactic centre, respectively. Dotted curves show the situation if radial migration were ignored, whereas solid curves display the results with radial migration. Top panels: low primordial Li assumed (Spite plateau); bottom panels: high primordial Li assumed (SBBN). Left: Li abundance as a function of time. Right: Li abundance as a function of [Fe/H]. The stellar Li source is low-mass red giants.
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