Free Access

Fig. 4

image

SWP ages computed through the isochrone placement technique. The difference tnoZt between the ages tnoZ computed without taking the surface metallicity Z evolution into account and the ages t computed considering such an effect, is plotted versus t. If the algorithm does not take into account that the sequences of isochrones are identified by the initial stellar metallicity, while we only know the present value, then the ages obtained are biased towards older values, especially for intermediate-age stars.

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.