Free Access

Fig. 19


DSS2-red image of NGC 6231, with superimposed positions of optically-unidentified X-ray sources (green crosses). The boundaries of the two ACIS FOVs are also indicated.

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.