Free Access
Fig. 2.
Interpolation of the luminosity function with a spline compared with the luminosity function of Bahcall & Soneira (1980). These two functions are not directly comparable because Bahcall & Soneira (1980) used a slightly different filter in the visible, but it shows that our luminosity function is reasonable.
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.