University of Surrey

Test tubes in the lab Research in the ATI Dance Research

The Sloan Great Wall. Rich clusters

Einasto, M, Tago, E, Saar, E, Nurmi, P, Enkvist, I, Einasto, P, Heinamaki, P, Liivamagi, LJ, Tempel, E, Einasto, J , Martinez, VJ, Vennik, J and Pihajoki, P (2010) The Sloan Great Wall. Rich clusters

Full text not available from this repository.


We present the results of the study of the substructure and galaxy content of ten rich clusters of galaxies in three different superclusters of the Sloan Great Wall. We determine the substructure in clusters using the 'Mclust' package from the 'R' statistical environment and analyse their galaxy content. We analyse the distribution of the peculiar velocities of galaxies in clusters and calculate the peculiar velocity of the first ranked galaxy. We show that clusters in our sample have more than one component; in some clusters different components also have different galaxy content. We find that in some clusters with substructure the peculiar velocities of the first ranked galaxies are large. All clusters in our sample host luminous red galaxies. They can be found both in the central areas of clusters as well as in the outskirts, some of them have large peculiar velocities. About 1/3 of red galaxies in clusters are spirals. The scatter of colours of red ellipticals is in most clusters larger than that of red spirals. The presence of substructure in rich clusters, signs of possible mergers and infall, as well as the large peculiar velocities of the first ranked galaxies suggest that the clusters in our sample are not yet virialized. We present merger trees of dark matter haloes in an N-body simulation to demonstrate the formation of present-day dark matter haloes via multiple mergers during their evolution. In simulated dark matter haloes we find a substructure similar to that in observed clusters.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
Einasto, M
Tago, E
Saar, E
Nurmi, P
Enkvist, I
Einasto, P
Heinamaki, P
Liivamagi, LJ
Tempel, E
Einasto, J
Martinez, VJ
Vennik, J
Date : 26 July 2010
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 11:55
Last Modified : 24 Jan 2020 21:26

Actions (login required)

View Item View Item


Downloads per month over past year

Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800