Free Access

Fig. 6


Surface brightness upper limits (triangles) for circularly symmetric extended Lyα emission around our 5 quasars as a function of radial angular (bottom abscissa) or physical extent (top abscissa). The integrated observed signal within each apertures is shown by the black points, where the error bars indicates the standard deviation within the aperture, as a measure of the irregularity of the flux distribution within the aperture.

This figure is made of several images, please see below:

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.