2007A&A...466..813K


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.14CEST19:08:09

2007A&A...466..813K - Astronomy and Astrophysics, volume 466, 813-821 (2007/5-2)

Metal enrichment of the intra-cluster medium over a Hubble time for merging and relaxed galaxy clusters.

KAPFERER W., KRONBERGER T., WERATSCHNIG J., SCHINDLER S., DOMAINKO W., VAN KAMPEN E., KIMESWENGER S., MAIR M. and RUFFERT M.

Abstract (from CDS):

We investigate the efficiency of galactic mass loss, triggered by ram-pressure stripping and galactic winds of cluster galaxies, on the chemical enrichment of the intra-cluster medium (ICM). We combine N-body and hydrodynamic simulations with a semi-numerical galaxy formation model. By including simultaneously different enrichment processes, namely ram-pressure stripping and galactic winds, in galaxy-cluster simulations, we are able to reproduce the observed metal distribution in the ICM. We find that the mass loss by galactic winds in the redshift regime z>2 is ∼10% to 20% of the total galactic wind mass loss, whereas the mass loss by ram-pressure stripping in the same epoch is up to 5% of the total ram-pressure stripping mass loss over the whole simulation time. In the cluster formation epochs z<2 ram-pressure stripping becomes more dominant than galactic winds. We discuss the non-correlation between the evolution of the mean metallicity of galaxy clusters and the galactic mass losses. For comparison with observations we present two dimensional maps of the ICM quantities and radial metallicity profiles. The shape of the observed profiles is well reproduced by the simulations in the case of merging systems. In the case of cool-core clusters the slope of the observed profiles are reproduced by the simulation at radii below ∼300kpc, whereas at larger radii the observed profiles are shallower. We confirm the inhomogeneous metal distribution in the ICM found in observations. To study the robustness of our results, we investigate two different descriptions for the enrichment process interaction.

Abstract Copyright:

Journal keyword(s): hydrodynamics - methods: numerical - Galaxy: abundances - galaxies: interactions - galaxies: intergalactic medium - galaxies: evolution

Simbad objects: 7

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Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ACO 2700 ClG 00 03 49.7 +02 03 59           ~ 79 0
2 ACO 22 ClG 00 20 34.8 -25 41 51           ~ 96 0
3 ACO 3364 ClG 05 47 36.1753 -31 52 22.695           ~ 64 0
4 NAME Hydra I Cluster ClG 10 36 36.0 -27 31 04           ~ 774 1
5 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5842 0
6 ACO 2050 ClG 15 16 21.6 +00 05 59           ~ 88 0
7 ACO S 868 ClG 20 23 00 -20 56.3           ~ 30 1

    Equat.    Gal    SGal    Ecl

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2020.08.14-19:08:09

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