Fig. 1.
Download original image
SIMBAD spectral types for 227556 targets in the O/B/A/F sample. Only the first occurrence of the spectral class letter and temperature subclass number was counted. This resulted in multiple artificially inflated peaks in the distribution of subclasses (narrow orange bars). The distribution is expected to follow the broad overall distribution of the wide blue bars.
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.