Open AccessDeconvolution of ASCA X‐ray data – II. Radial temperature and metallicity profiles for 106 galaxy clusters
Author(s) -
White D. A.
Publication year - 2000
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2000.03163.x
Subject(s) - physics , astrophysics , cluster (spacecraft) , galaxy cluster , metallicity , galaxy , cooling flow , deconvolution , type cd galaxy , redshift , astronomy , optics , computer science , programming language
In Paper I we presented a methodology to recover the spatial variations of properties of the intracluster gas from ASCA X‐ray satellite observations of galaxy clusters. We verified the correctness of this procedure by applying it to simulated cluster data sets that we had subjected to the various contaminants common in ASCA data. In this paper we present the results that we obtain when we apply this method to real galaxy cluster observations. We determine broad‐band temperature and cooling‐flow mass‐deposition rates for the 106 clusters in our sample, and obtain temperature, abundance and emissivity profiles (i.e., at least two annular bins) for 98 of these clusters. We find that 90 per cent of these temperature profiles are consistent with isothermality at the 3 σ confidence level. This conflicts with the prevalence of steeply declining cluster temperature profiles found by Markevitch et al. from a sample of 30 clusters.