Star volume density (left) and mean stellar age (right) as a function of time during the gravitational collapse of a stellar sphere of unit radius. The elapsed time is indicated in the left panel. Star formation is turned off for this test problem. The dash-dot-dotted lines shows the mean stellar age when calculated using the Eulerian form to account for bulk motions of stars instead of the Lagrangian form (see text for more detail).
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.