Fig. 8.
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Clusters’ median [Fe/H] as a function of the Galactocentric radius RGC for all the LAMOST clusters with at least three FLAG=12 stars. Different panels show different look-back times according to the orbit calculations. Clusters are divided into six groups according to age from the Cantat-Gaudin et al. (2020) catalogue. The solid curves are the second-order polynomial MCMC fittings of each age group.
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