Studies of Nearby Poor Clusters: The Eridanus Group
Abstract
We have made a dynamical study of the Eridanus group of galaxies. This system is quite prominent in one of the large-scale features found in the recently completed Southern Sky Redshift Survey: the Eridanus-Fornax-Dorado filament. The irregular aspect of Eridanus suggests the existence of subclustering, which is confirmed by statistical tests. These subclusters are bound, suggesting that the system is still condensing from the Hubble flow and may eventually form a cluster of about 10^14^ M_sun_. By calculating the two-body orbital solution, we find that the Eridanus complex and the Fornax Cluster also form a bound system, though still in the expansion phase.
- Publication:
-
The Astronomical Journal
- Pub Date:
- November 1989
- DOI:
- 10.1086/115236
- Bibcode:
- 1989AJ.....98.1531W
- Keywords:
-
- Galactic Clusters;
- Galactic Mass;
- Red Shift;
- Sky Surveys (Astronomy);
- Cosmology;
- Dynamic Characteristics;
- Statistical Analysis;
- Astrophysics;
- GALAXIES: CLUSTERING