Free Access
Fig. 3.
Difference of GC metallicities from PPXF when using or not an age prior (≥8 Gyr) in relation to the best-fitting age. The symbols are colour-coded by the best-fitting metallicity. The dashed line shows the zero difference.
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.