[3] Work by Willmer et al. in 1989 suggested that the Group is condensing from the Hubble Flow and is a prominent feature in the large-scale system called the Eridanus-Fornax-Dorado Filament.
[4] The group extends over approximately 10 Mpc and on the sky is bounded by the lines of 3hr6' and 4hr30' of Right Ascension and −10° and −30° Declination.
[5] Dynamic studies indicate that the group is at an important stage of its evolution with the types of galaxy present already fixed.
This suggests that galaxies involved in the formation of rich clusters are already highly evolved, a finding which supports aspects of Cold Dark Matter theories.
The sub-group is not centred on any one galaxy and studies of X-ray emissions from the group indicate that it is dynamically young.