Abundance to age ratios in the HARPS-GTO sample with Gaia DR2 - Chemical clocks for a range of [Fe/H]

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Fig. 2

Comparison of ages and masses obtained using Gaia DR2 or HIPPARCOS parallaxes and obtained with package q². The red dots are the stars with errors in age lower than 1.5 Gyr. The green dashed lines shows the zero differences and the blue lines show the mean and standard deviation.

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