Free Access
Fig. 11
Ca II H line for our program stars. μ Leo shows no significant core reversal in the line compared to that in the chromospheric active star HD 106677 (K0 III). There are weak central emissions in the center of the Ca II H line for β Cnc and β UMi. The vertical dotted line indicates the center of the Ca II H regions.
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.