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The Evolution of Galaxy Disks in Dense Environments - Lessons from Compact Galaxy Groups
J. Rasmussen, T. J. Ponman, L. Verdes-Montenegro +2
Disk galaxies in compact galaxy groups exhibit a remarkable shortfall of neutral hydrogen compared to both isolated spirals and spirals in more loose groups, but the origin of this…
The Chandra View of Galaxy Mergers
N. J. Brassington, T. J. Ponman, A. M. Read
From a Chandra survey of nine interacting galaxy systems the evolution of X-ray emission during the merger process has been investigated. It is found that the X-ray luminosity peak…
The Representative XMM-Newton Cluster Structure Survey (REXCESS) of an X-ray Luminosity Selected Galaxy Cluster Sample
H. Boehringer, P. Schuecker, G. W. Pratt +31
The largest uncertainty for cosmological studies using clusters of galaxies is introduced by our limited knowledge of the statistics of galaxy cluster structure, and of the scaling…
Bayesian modelling of the cool core galaxy group NGC 4325
Paul A. Russell, Trevor J. Ponman, Alastair J. R. Sanderson
We present an X-ray analysis of the radio-quiet cool-core galaxy group NGC 4325 (z=0.026) based on Chandra and ROSAT observations. The Chandra data were analysed using XSPEC deproj…
Scaling relations in fossil galaxy groups
Habib G. Khosroshahi, Trevor J. Ponman, Laurence R. Jones
Using Chandra X-ray observations and optical imaging and spectroscopy of a flux-limited sample of 5 fossil groups, supplemented by additional systems from the literature, we provid…
AGN heating in galaxy groups: A statistical study
N. N. Jetha, T. J. Ponman, M. J. Hardcastle +1
We present gas temperature, density, entropy and cooling time profiles for the cores of a sample of 15 galaxy groups observed with {\it Chandra}. We find that the entropy profiles…