Abell 2163
| Abell 2163 | |
|---|---|
| Observation data (Epoch Equitorial J2000) | |
| Right ascension | 16h 15m 34.1s |
| Declination | -06° 07′ 26.04″ |
| Richness class | 2 |
| Redshift | 0.2 |
| ICM Temperature | 11.5 - 14.6 keV |
| Binding mass | 4.6 × 1015 solar mass |
| X-ray luminosity | 6 × 1045erg/s |
| See also: Galaxy groups and clusters, List of galaxy clusters | |
Abell 2163 is one of the richest and most distant clusters of galaxies. Its abell richness class is 2 and position is at a redshift 
. Data from Chandra X-ray Observatory have shown that it is the hottest galaxy cluster in the Abell catalogue. It's also a meging cluster.
The galaxy density and mass distribution in the central region of this cluster have also been determined by weak gravitational lensing. These analyses show very similar mass and galaxy distributions, with two coincident maxima and a flat shape elongated in the east-west direction, but the weak lensing signal is surprisingly faint in comparison to what could be expected from the cluster X-ray properties. However, these detailed studies are limited to the inner 8’×8’ region of the cluster, and do not include the peripheral clumps such as A2163-B. La Barbera et al. (2004) estimated the photometric redshifts of galaxies in A2163-B, showing that this structure lies at the typical redshift of the main cluster (z = 0.215 ± 0.0125).[1]
References
- ^ A2163: Merger events in the hottest Abell galaxy cluster I. Dynamical analysis from optical data by S.Maurogordato, A. Cappi, C. Ferrari, C. Benoist, G. Mars, G. Soucail, M. Arnaud, G.W. Pratt, H. Bourdin, J.-L. Sauvageot.