Free Access
Fig. 10
Measured chromospheric excess flux from 2274 observations of 82 stars in the Ca ii H and K lines compared with the excess flux in Hα. Fluxes given in erg s-1 cm-2.
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.