Query : 2008A&A...487..461L

2008A&A...487..461L - Astronomy and Astrophysics, volume 487, 461-466 (2008/8-4)

Radial metallicity profiles for a large sample of galaxy clusters observed with XMM-Newton.


Abstract (from CDS):

We measured radial metallicity profiles for a sample of ≃50 hot, intermediate redshift galaxy clusters, selected from the XMM-Newton archive. As in our previous paper, we used background modeling rather than background subtraction, and the Cash statistic rather than the χ2. This method requires a careful characterization of all background components. We also performed Montecarlo simulations to assess systematic effects. The mean metallicity profile shows a peak in the center, and gently declines out to 0.2R180. Beyond 0.2R180 the metallicity is ≃0.2 solar and, at variance with recently published expectations based on simulations, consistent with being flat. We find no evidence of profile evolution from z=0.1 to z=0.3. When comparing our mean profile to those obtained by recent works with BeppoSAX and Chandra, we find remarkable agreement over the entire radial range.

Abstract Copyright:

Journal keyword(s): X-rays: galaxies: clusters - galaxies: clusters: general - cosmology: observations

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
1 ACO 267 ClG 01 52 43.016 +00 59 58.90           ~ 226 0
2 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1109 0

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