Open Access
Fig. 9

Download original image
AMR traced by old OCs at different distances from the Galactic centre. The linear fit in red highlights the trend (metallicity and age uncertainties have been taken into account via MC sampling). The three outliers mentioned earlier have not been considered.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.