Constraining the Role of SN Ia and SN II in Galaxy Groups by Spatially Resolved Analysis of ROSAT and ASCA Observations

Abstract

We present the results of modelling the distribution of gas properties in the galaxy groups HCG51, HCG62 and NGC5044, and in the poor cluster AWM7, using both ASCA SIS and ROSAT data. The spectral quality of the ASCA data allows the radial distribution in the abundances of several elements to be resolved. In all systems apart from HCG51, we see both central cooling flows, and a general decline in metal abundances with radius. The ratio of iron to alpha-element abundances varies significantly, and in comparison with theoretical supernova yields, indicates a significant contribution to the metal abundance of the intergalactic medium (IGM) from type Ia supernovae. This is seen both within the groups, and also throughout much of the cluster AWM7. The total energy input into the IGM from supernovae can be calculated from our results, and is typically 20-40 per cent of the thermal energy of the gas, mostly from SNe II. Our results support the idea that the SN II ejecta have been more widely distributed in the IGM, probably due to the action of galaxy winds, and the lower iron mass to light ratio in groups suggests that some of this enriched gas has been lost altogether from the shallower potential wells of the smaller systems.

14 pages, accepted for MNRAS

References in corpus (8)

• The Imprint of Galaxy Formation on X-ray Clusters
• ASCA Measurements of Silicon and Iron Abundances in the Intracluster Medium
• Supernovae Types Ia/II and Intracluster Medium Enrichment
• The Luminosity-Temperature Relation for Groups and Clusters of Galaxies
• Discovery of a Large-Scale Abundance Gradient in the Cluster of Galaxies AWM7 with ASCA
• Largely Extended X-ray Emission around the Elliptical Galaxy NGC 4636 Observed with ASCA
• Recent X-ray Observations and the Evolution of Hot Gas in Elliptical Galaxies: Evidence for Circumgalactic Gas
• The IntraCluster Medium: An Invariant Stellar IMF

Cited by in corpus (51)

• Chemical enrichment of galaxy clusters from hydrodynamical simulations
• Details of the mass--temperature relation for clusters of galaxies
• The Birmingham-CfA cluster scaling project - III: entropy and similarity in galaxy systems
• X-ray Properties of Groups of Galaxies
• The intragroup medium in loose groups of galaxies
• The entropy and energy of intergalactic gas in galaxy clusters
• The Birmingham-CfA cluster scaling project - I: gas fraction and the M-T relation
• X-Ray Evidence for Multiphase Hot Gas with Nearly Solar Fe Abundances in the Brightest Groups of Galaxies
• An ASCA Study of the Heavy Element Distribution in Clusters of Galaxies
• The effect of non--gravitational gas heating in groups and clusters of galaxies
• Temperature and abundance profiles of hot gas in galaxy groups - I. Results and statistical analysis
• The Population of Weak MgII Absorbers. II The Properties of Single-Cloud Systems
• Iron Gradients in Cooling Flow Galaxies and Groups
• Temperature and Heavy Element Abundance Profiles of Cool Clusters of Galaxies from ASCA
• ASCA and ROSAT observations of nearby cluster cooling flows
• Heating of Intergalactic Gas and Cluster Scaling Relations
• XMM-Newton and Chandra Observations of the Galaxy Group NGC 5044. II. Metal Abundances and Supernova Fraction
• Enrichment of the hot intracluster medium: observations
• X-MAS2: Study Systematics on the ICM Metallicity Measurements
• Chandra Survey of Nearby Highly Inclined Disc Galaxies - II: Correlation Analysis of Galactic Coronal Properties
• Cavities and shocks in the galaxy group HCG 62 as revealed by Chandra, XMM and GMRT data
• Temperature and abundance profiles of hot gas in galaxy groups - II. Implications for feedback and ICM enrichment
• X-ray Evidence for Spectroscopic Diversity of Type Ia Supernovae: XMM observation of the elemental abundance pattern in M87
• ASCA observations of groups at radii of low overdensity. Implications for the cosmic preheating
• XMM-Newton study of 0.012<z<0.024 groups. I: Overview of the IGM thermodynamics
• Tracing the Gas to the Virial Radius (R100) in a Fossil Group
• Simulating galaxy clusters -- I. Thermal and chemical properties of the intra-cluster medium
• The Two-dimensional XMM-Newton Group Survey: z<0.012 groups
• Competition between shocks and entropy floor : unifying groups and clusters of galaxies
• Ultra-Low Iron Abundances in Distant Hot Gas in Galaxy Groups
• The metal content of the hot atmospheres of galaxy groups
• The ELIXR Galaxy Survey. II: Baryons and Dark Matter in an Isolated Elliptical Galaxy
• Central Elemental Abundance Ratios in the Perseus Cluster: Resonant Scattering or SN Ia Enrichment?
• Chandra and XMM-Newton Observations of a Group of Galaxies HCG 62
• A photometric and spectroscopic study of dwarf and giant galaxies in the Coma cluster - V. Dependence of the spectroscopic properties on location in the cluster
• Detection of Excess Hard X-ray Emission from the Group of Galaxies HCG62
• SN Ia Enrichment in Virgo Early-Type Galaxies from ROSAT and ASCA Observations
• XMM-Newton Witness of M86 X-ray Metamorphosis
• Finding Fossil Groups: Optical Identification and X-ray Confirmation
• An optical and X-ray study of the fossil group RX J1340.6+4018
• Suzaku Observation of HCG 62: Temperature, Abundance, and Extended Hard X-ray Emission Profiles
• The effect of mixing on metallicity gradients in the ICM
• Young Red Spheroidal Galaxies in the Hubble Deep Fields: Evidence for a Truncated IMF at ~2M_solar and a Constant Space Density to z~2
• Abundance profiles and cool cores in galaxy groups
• An XMM-Newton study of the RGH 80 galaxy group
• The detection of diffuse emission in HCG 16 with XMM-Newton
• The Impact of Outflows driven by Active Galactic Nuclei on Metals in and around Galaxies
• Hydrostatic gas distributions: global estimates of temperature and abundance
• On the nature of EXO 0423.4-0840
• Cluster contribution to the X-ray background as a cosmological probe
• A Chandra and XMM View of the Mass & Metals in Galaxy Groups and Clusters