X-Ray Study of Temperature and Abundance Profiles of the Cluster of Galaxies Abell 1060 with Suzaku

We carried out observations of the central and 20' east offset regions of thecluster of galaxies Abell 1060 with Suzaku. Spatially resolved X-ray spectralanalysis has revealed temperature and abundance profiles of Abell 1060 out to27' ~ 380; /h_70 kpc, which corresponded to ~ 0.25; r_180. Temperature decreaseof the intra cluster medium from 3.4 keV at the center to 2.2 keV in theoutskirt region are clearly observed. Abundances of Si, S and Fe also decreaseby more than 50% from the center to the outer, while Mg shows fairly constantabundance distribution at ~ 0.7 solar within r < 17'. O shows lower abundanceof ~ 0.3 solar in the central region (r~ 6'), and indicates a similar featurewith Mg, however it is sensitive to the estimated contribution of the Galacticcomponents of kT_1 ~ 0.15 keV and kT_2 ~ 0.7 keV in the outer annuli (r ~ 13').Systematic effects due to the point spread function tails, contamination on theXIS filters, instrumental background, cosmic and/or Galactic X-ray background,and the assumed solar abundance tables are carefully examined. Results ontemperature and abundances of Si, S, and Fe are consistent with those derivedby XMM-Newton at r < 13'. Formation and metal enrichment process of the clusterare discussed based on the present results.Comment: 20 pages, 19 figures, accepted for publication in PAS