Free Access

Fig. 5


Current binary fraction for different WD systems. In the top panel the observed fractions are shown, on the bottom the range of fractions in the BPS models, based on Table 4. From the BPS models the combination of single WDs and WDs from mergers should be compared with the observed single WDs. A significant discrepancy exists between observations and theory regarding resolved DWDs.

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.