Metallicity map of the galaxy cluster A3667

Abstract

We use XMM-Newton data of the merging cluster Abell 3667 to analyze its metallicity distribution. A detailed abundance map of the central 1.1x1.1 Mpc region indicates that metals are inhomogeneously distributed in the cluster showing a non-uniform and very complex metal pattern. The highest peak in the map corresponds to a cold region, slightly offset South of the X-ray center. This could be interpreted as stripped gas due to a merger between a group moving from NW towards the SE and the main cluster. We note several clumps of high metallicity also in the opposite direction with respect to the X-ray peak. Furthermore we determined abundances for 5 elements (O, Si, S, Ar, Fe) in four different regions of the cluster. Comparisons between these observed abundances and theoretical supernovae yields allow to get constraints on the relative number of SN Ia and II contributing to the enrichment of the intra-cluster medium. To reproduce the observed abundances of the best determined elements (Fe, O and Si) in a region of 7 arcmin around the X-ray center, 65-80% of SN II are needed. The comparison between the metal map, a galaxy density map obtained using 550 spectroscopically confirmed cluster members and our simulations suggest a recent merger between the main cluster and the group in the SE.

10 pages, 10 figures

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Cited by in corpus (16)

• Galaxy Clusters at the Edge: Temperature, Entropy, and Gas Dynamics at the Virial Radius
• The Non-Uniformity of Galaxy Cluster Metallicity Profiles
• MeerKAT view of the diffuse radio sources in Abell 3667 and their interactions with the thermal plasma
• The Ties that Bind? Galactic Magnetic Fields and Ram Pressure Stripping
• The radio relic in Abell 2256: overall spectrum and implications for electron acceleration
• Galaxies undergoing ram-pressure stripping: the influence of the bulge on morphology and star formation rate
• Properties of the intracluster medium of Abell 3667 observed with Suzaku XIS
• An azimuthally resolved study of the cold front in Abell 3667
• Inhomogeneous Metal Distribution in the Intra-Cluster Medium
• X-ray analysis of the galaxy group UGC03957 beyond R200 with Suzaku
• CHEX-MATE: Characterization of the intra-cluster medium temperature distribution
• How Much Can We Learn From A Merging Cold Front Cluster? : Insights From X-ray Temperature and Radio Maps of Abell 3667
• Iron abundance distribution in the hot gas of merging galaxy clusters
• Indications of an offset merger in Abell 3667
• Metal distribution in the ICM - a comprehensive numerical study of twelve galaxy clusters
• The Intracluster Light of Abell 3667: Unveiling an Optical Bridge in LSST Precursor Data