Free Access

Fig. 13.

image

Upper panel: all galaxies within a distance of one degree from NGC 3311 with a radial velocity limit of 20 000 km s−1. The Hydra I members stand out clearly. We select galaxies with a radial velocities less than 6000 km s−1. Lower panel: surface number densities in 8 bins. The parameters of two modified Hubble profiles are given, one of them fitted with the first bin skipped. The core radius is only badly defined and may be high.

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.