Free Access

Fig. 4


Relations of rotational and cycle periods vs. Teff. Stars with simple cycles are plotted with red dots, stars with complex cycles with blue squares, and the Sun with an orange star. The components of the wide binaries HD 131156A/B and HD 201091/HD 201092 are connected. Top: rotational periods versus effective temperatures. Bottom: Pcyc/Prot (related to the dynamo number) versus effective temperature. The fit for the stars with complex cycles shows a relation increasing toward hotter temperatures.

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.