Fig. 1
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Age map on X–Y plane of 1118 OCs older than ∼500 Myr (log(age) ≥ 8.7) taken from the gold sample of Cavallo et al. (2024), colour-coded by age from that catalogue, in different bins of distance to the Galactic plane Z. The Galactic centre is represented by a black cross. The solar circle is shown at RG=8.122 kpc (GRAVITY Collaboration 2018).
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