Fig. 8
Covariance index ci (defined for each source as the ratio between the maximum covariance and the variance) as a function of the measured flux using t-phot (shown in log μJy) in the A2744 cluster field. Left: Ks; right: IRAC 3.6 μm. The horizontal line, at log ci = 0.0, indicates a reference value of reliability for the measured flux. See text for more details.
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.