Open Access
Fig. 4.
Download original image
Same as Fig. 2 for the S stars in Chen et al. (2019). Solid black circles show extrinsic stars, and purple circles show intrinsic stars. The limits of the X- and Y-axes and R coordinates are different from Fig. 2.
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.