Open Access
Fig. 4.
u − g versus g − r plot for stars towards NGC 6357 (within 91′ centered on the Pismis 24 cluster). The B3V star reddening vector and the main sequence are from Drew et al. (2014). Hot stars are those that are earlier than B3V.
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.