Free Access
Fig. 4

5 σ detection limits for possible companions around the four discussed systems of our survey. We show the average magnitude limit, assuming a distance of 95 pc and age of 4.5 Gyr; this translates into a companion mass at the stellar-brown dwarf boarder.
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.