Free Access
Fig. 11
Average spectra in the region of the He I line at 5876 Å for stars in different temperature bins. See Sect. 4 for the definition of different groups of stars. Spectra have been offset for clarity.
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.