Open Access
Fig. 2.

Download original image
2 keV luminosity distribution of the sample. We include both measured values (green histogram) by Martocchia et al. (2017) and Zappacosta et al. (2020) and derived values using the L2 keV − L2500 Å relation.
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.