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Title:
Chandra observations of Abell 2199
Authors:
Johnstone, R. M.; Allen, S. W.; Fabian, A. C.; Sanders, J. S.
Affiliation:
AA(Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA), AB(Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA), AC(Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA), AD(Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA)
Publication:
Monthly Notice of the Royal Astronomical Society, Volume 336, Issue 1, pp. 299-308. (MNRAS Homepage)
Publication Date:
10/2002
Origin:
MNRAS
MNRAS Keywords:
galaxies: clusters: general, galaxies: clusters: individual: Abell 2199, cooling flows, intergalactic medium, X-rays: galaxies
DOI:
10.1046/j.1365-8711.2002.05743.x
Bibliographic Code:
2002MNRAS.336..299J

Abstract

We present results from an analysis of two Chandra observations of the rich, nearby galaxy cluster Abell 2199. We find evidence (having corrected for projection effects) for radial gradients in temperature and metallicity in the X-ray emitting gas: the temperature drops from kT~ 4.2 keV at R= 200 kpc to 1.6 keV within R= 5 kpc of the centre. The metallicity rises from ~0.3 solar at R= 200 kpc to ~0.7 solar at R= 30 kpc before dropping to 0.3 solar within the central 5 kpc. We find evidence for structure in the surface brightness distribution associated with the central radio source 3C 338. No evidence is found for the gas having a large spread in temperature at any particular location despite the cooling time being short (<109 yr) within the central ~15 kpc. Heating and mass cooling rates are calculated for various assumptions about the state of the gas.

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