From ROSAT data, the bright X-ray cluster Abell 85 was found to show a roughly symmetrical shape, on to which are superimposed several features, among which: (1) a blob or group of galaxies falling on to the main cluster, with the gas in the impact region probably hotter and the galaxies in that zone showing enhanced star formation; (2) a filament, either diffuse or made of small groups of galaxies, extending at least 4 Mpc from the cluster (Durret et al. 1998). Preliminary results obtained from XMM-Newton and Chandra observations of Abell 85 and its filament will be presented.
Matter and Energy in Clusters of Galaxies
- Pub Date:
- Poster paper presented at the conference ``Matter and Energy in Clusters of Galaxies'', Taiwan April 23-27, 2002, Chorng-Yuan Hwang and Stuart Bowyer, Eds