Discovery of a Large-Scale Abundance Gradient in the Cluster of Galaxies AWM7 with ASCA
arXiv:astro-ph/9709208 · doi:10.1086/311004
Abstract
A large-scale gradient in the metal abundance has been detected with ASCA from an X-ray bright cluster of galaxies AWM7. The metal abundance shows a peak of 0.5 solar at the center and smoothly declines to <~ 0.2 solar at a radius of 500 kpc. The gas temperature is found to be constant at 3.8 keV. The radial distribution of iron can be fit with a beta-model with beta ~ 0.8 assuming the same core radius (115 kpc) as that of the intracluster medium. The metal distribution in AWM7 suggests that the gas injected from galaxies is not efficiently mixed in the cluster space and traces the distribution of galaxies.
14 pages with 3 figures, LaTeX with AASTeX v4.0 style file, accepted for publication in ApJL
Cited by in corpus (46)
- Heating Hot Atmospheres with Active Galactic Nuclei
- The Temperature Structure of 30 Nearby Clusters Observed with ASCA. Similarity of Temperature Profiles
- Metallicity Gradients in X-ray Clusters of Galaxies
- Non-Gravitational Heating in the Hierarchical Formation of X-ray Clusters
- On the soft X-ray spectrum of cooling flows
- X-Ray Probing of the Central Regions of Clusters of Galaxies
- Spectroscopic metallicities for Fornax UCDs, GCs and dE,Ns
- ASCA and ROSAT observations of nearby cluster cooling flows
- Implications of the central metal abundance peak in cooling core clusters of galaxies
- Heating of Intergalactic Gas and Cluster Scaling Relations
- Chandra observtaion of A2256 - a cluster at the early stage of merging
- On conduction, cooling flows and galaxy formation
- Iron abundances and heating of the ICM in hydrodynamical simulations of galaxy clusters
- ASCA Compilation of X-Ray Properties of Hot Gas in Elliptical Galaxies and Galaxy Clusters: Two Breaks in the Temperature Dependences
- The Effect of Cooling on the Density Profile of Hot Gas in Clusters of Galaxies: Is Additional Physics Needed?
- Radial Temperature Profiles of X-Ray--Emitting Gas Within Clusters of Galaxies
- On the supernovae heating of intergalactic medium
- Two-Phased Intra-Cluster Medium in the Centaurus Cluster of Galaxies
- Constraining the Role of SN Ia and SN II in Galaxy Groups by Spatially Resolved Analysis of ROSAT and ASCA Observations
- X-Ray Study of Temperature and Abundance Profiles of the Cluster of Galaxies Abell 1060 with Suzaku
- Radial profiles of Fe abundance in the intracluster medium of nearby clusters observed with XMM-Newton
- The Ties that Bind? Galactic Magnetic Fields and Ram Pressure Stripping
- Suzaku Observations of AWM 7 Cluster of Galaxies: Temperature, Abundance and Bulk Motions
- Some effects of small-scale metallicity variations in cooling flows
- Metallicity Gradients in the Intracluster Gas of Abell 496
- Central Elemental Abundance Ratios in the Perseus Cluster: Resonant Scattering or SN Ia Enrichment?
- Inhomogeneity in the Hot Intracluster Medium of Abell 1060 Observed with Chandra
- Iron Abundance Profiles of 12 Clusters of Galaxies Observed With BeppoSAX
- ASCA Temperature Maps of Three Clusters of Galaxies Abell 1060, AWM7, and the Centaurus Cluster
- ASCA Observations of Temperature Structure and Metal Distribution in the Perseus Cluster of Galaxies
- The effect of mixing on metallicity gradients in the ICM
- Chandra Observations of the A3266 Galaxy Cluster Merger
- Suzaku Observations of Metal Distributions in the Intracluster Medium of the Centaurus Cluster
- Chandra observation of the core of the galaxy cluster AWM7
- X-ray Study of Seventy-nine Distant Clusters of Galaxies: Discovery of Two Classes of Cluster Size
- Numerical convergence of physical variables in hydrodynamical simulations of cooling clusters
- Detecting the Gravitational Redshift of Cluster Gas
- Temperature Variation in the Cluster of Galaxies Abell 115 Studied with ASCA
- X-ray Diagnostics of Thermal Conditions of the Hot Plasmas in the Centaurus Cluster
- A BeppoSax view of the Centaurus Cluster
- A Galaxy Merger Scenario for the NGC 1550 Galaxy from Metal Distributions in the X-ray Emitting Plasma
- X-ray colour maps of the cores of galaxy clusters
- On the Internal Absorption of Galaxy Clusters
- Chandra Observation of the Cluster of Galaxies MS 0839.9+2938 at z=0.194: the Central Excess Iron and SN Ia Enrichment
- Suzaku Observations of the cluster of galaxies Abell 2052
- Metals in the Intracluster Medium of MS 1512.4+3647 Observed with Suzaku: Implications for the Metal Enrichment History