Open Access
Fig. 2
Download original image
Proper motion similarity assessment. Two clusters with Dpm < max(σ1pm,σ2pm) are thought to have common proper motion. Dpm is the distance between the proper motion centres of two clusters. σ1pm and σ2pm are the σ values of two clusters.
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.