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Fig. 21.

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Calibrated [α/Fe] vs. [M/H], in 3 Gyr age bins for giant stars (log g  <  3.5) closer than 1.5 kpc from the Sun. The contour lines inside each panel were evaluated for the sample considering all the age ranges, represented in the bottom right panel. The colour-coding corresponds to the maximum distance above the Galactic plane that a star can reach during its orbit.

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