Fig. 4
Top panel: χ2 probability test as a function of the age of the burst of star formation obtained by fitting the nine brightest bins of the white dwarf luminosity function. Bottom panel: synthetic white dwarf luminosity function for a disk age of 8.9 Gyr and a recent burst of star formation (black line), compared with the observed white dwarf luminosity function of (red lines).
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.