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Astron. Astrophys. 327, 37-46 (1997)
X-ray analysis of Abell 2634 and its central galaxy 3C 465
Sabine Schindler
* 1 and
M. Almudena Prieto
** 2
1 Max-Planck-Institut für extraterrestrische Physik,
Giessenbachstraße, D-85748 Garching, Germany
2 Max-Planck-Institut für Astrophysik,
Karl-Schwarzschild-Straße 1, D-85748 Garching, Germany
Received 23 October 1996 / Accepted 16 June 1997
Abstract
An analysis of a ROSAT/PSPC observation of the galaxy cluster
A 2634 is presented. The cluster has a luminosity of
![[FORMULA]](img3.gif)
erg/s in the ROSAT band (0.1-2.4 keV). The
temperature profile decreases from about 3 keV in the outer parts to
1.2 keV in the centre. Within a radius of 1.5 Mpc the gas mass of the
cluster is 0.51 ![[FORMULA]](img4.gif)
and the total mass amounts to
![[FORMULA]](img5.gif)
. The X-ray morphology shows two peculiar
features - a strongly peaked emission in the centre and an excess
emission in the south-west. The central emission probably originates
from a weak cooling flow, the SW emission is possibly associated with
higher density regions in pressure equilibrium with the intra-cluster
medium. This region of excess emission is somewhat embraced by the
wide-angle radio tails associated with 3C 465 suggesting that the
overpressure of the relativistic particles has displaced the thermal
gas.
Key words: galaxies: clusters: individual:
A 2634 
galaxies: individual:
3C 465
intergalactic
medium
dark matter
X-rays: galaxies
* e-mail: sas@mpa-garching.mpg.de
** e-mail: alm@mpe-garching.mpg.de
Contents
- 1. Introduction
- 2. Data
- 3. Spatial analysis
- 4. Spectral analysis
- 5. Luminosity
- 6. Mass determination
- 7. Central emission
- 8. Comparison with optical data
- 9. The X-ray / radio relationship
- 10. Discussion and conclusions
- Acknowledgements
- References
© European Southern Observatory (ESO) 1997
Online publication: April 8, 1998
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