Number of observations (CCD transits) per source in the TGAS catalogue for the Pleiades field. At this early stage there are still large local variations in the coverage. Positions are relative to the assumed centre of the Pleiades cluster. Each point represents a cluster or field star in the area.
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.