Metallicity map of the galaxy cluster A3667

Details Metallicity map of the galaxy cluster A3667 Metallicity map of the galaxy cluster A3667

2009-09-28

arxiv.org/abs/0909.5040v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

10 pages, 10 figures

Scientific paper

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.

Affiliated with

Also associated with

No associations

Rating

Metallicity map of the galaxy cluster A3667 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Metallicity map of the galaxy cluster A3667, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metallicity map of the galaxy cluster A3667 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-234639