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Fig. C.1

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Effect of the age uncertainties on the age-[α/Fe] distribution (left column), age-metallicity distribution (middle column), and [α/Fe]-[Fe/H] distribution (right column) for GALAH DR3 local dwarfs. The stars are color-coded for [Fe/H], [α/Fe] and age, respectively. The stars in these plots have been selected to have 3.5 < logg < 4.45, distance from the sun below 2 kpc, [Fe/H] > −1, age above 1 Gyr, (BP - RP)0 < 0.95, snr_c3_iraf above 65, flag_sp = 0, flag_fe_h = 0, flag_alpha_fe = 0. We compare three different cuts: eage < 0.5 Gyr, eage < 1 Gyr, eage < 1.5 Gyr with the total distribution to which no selection on age uncertainty is applied (bottom row).

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