Fig. 6.

Download original image
Upper panel: Two 12 Gyr WD isochrones for the progeny of He-normal cluster sub-populations with [Fe/H] = −1.9 and −0.9 (solid blue and dotted orange lines, respectively), and a 12 Gyr WD isochrone for the progeny of the Y = 0.4 cluster sub-population (dashed green line). See text for details. Lower panel: LFs calculated from the three isochrones in the upper panel (same line styles and colours). The number of stars in each LF is the same, approximately equal to the total number of objects in the cluster LF.
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.