Fig. 4.
Download original image
Hyper colour-colour diagram obtained using VISTA+DECam photometry, showing the separation of mock red quasars from COSMOS2020 sources. The latter include galaxies (gold contours) and AGN candidates (in purple). The contours are normalised to their respective subsets. The proposed selection function is displayed via the grey dashed lines.
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.