Galaxy Associations within the Coma Cluster
| dc.creator | Gurzadyan, V. G. | |
| dc.creator | Mazure, A. | |
| dc.date | 2001-02-08 | |
| dc.date.accessioned | 2026-07-07T10:31:04Z | |
| dc.date.available | 2026-07-07T10:31:04Z | |
| dc.description | The mean redshift of the core of the Coma cluster - cz = 6953 km s^{-1} and its dispersion σ=949 km s^{-1} are obtained by means of the analysis of the substructures of this cluster by using the S-tree method. The existence of three subgroups of galaxies is revealed, one of them is associated with the cD galaxy NGC 4874, the other -- with NGC 4889. It is argued that these subgroups are {\it galaxy associations}, i.e. galactic dynamical entities moving within the main cluster. Thus we conclude that the non-stationarity of the dynamical processes ongoing in the Coma core is due to the merging of small-scale galaxy associations, rather than of two equal sized clusters. We provide the lists of the galaxies of the associations, the observational study of which can be of particular interest. | |
| dc.description | to appear in New Astronomy | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0102136 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0102136 | |
| dc.identifier | NewAstron.6:43,2001 | |
| dc.identifier | doi:10.1016/S1384-1076(01)00043-4 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/178293 | |
| dc.subject | Astrophysics | |
| dc.title | Galaxy Associations within the Coma Cluster | |
| dc.type | text |