2004/06/24 by B. J. Maughan, L. R. Jones, D. Lumb +2
Physics and Astronomy · #Astrophysical Phenomena and Observations #Galaxies: Formation, Evolution, Phenomena #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1111/j.1365-2966.2004.08149.x
11 pages, 12 figures. Accepted for publication in MNRAS
arxiv created 2004/06/24 · openalex publication_date 2004/09/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
A detailed analysis of XMM–Newton observations of ClJ0046.3+8530 (z= 0.624) is presented. The cluster has a moderate temperature (kT= 4.1 ± 0.3 keV) and appears to be relaxed. Emission is detected at ≥3σ significance to a radius of 88 per cent of R200 (the radius enclosing an overdensity of 200 times the critical density at z= 0.624) in a surface brightness profile. A temperature profile (extending to 0.7R200) and hardness ratio map show no significant departures from the global temperature, within the statistical limits of the data. The cluster bolometric X‐ray luminosity is LX= (4.3 ± 0.3) × 1044 erg s‐1, and the total mass derived within R200, assuming isothermality and hydrostatic equilibrium, is M200= 3.0+0.6−0.5× 1014 M⊙. The gas entropy measured at 0.1R200 is compared with a sample of local systems, and found to be consistent with self‐similar evolution with redshift. The metallicity, gas density profile slope and gas mass fraction are all consistent with those found in low‐z clusters.