Chandra observations of Abell 2199

Details Chandra observations of Abell 2199 Chandra observations of Abell 2199

2002-02-04

arxiv.org/abs/astro-ph/0202071v2

Mon.Not.Roy.Astron.Soc.336:299,2002

Astronomy and Astrophysics

Astrophysics

10 pages, 12 figures. Accepted by MNRAS. Minor changes following referee's comments

Scientific paper

10.1046/j.1365-8711.2002.05743.x

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 3C338. No evidence is found for the gas having a large spread in temperature at any particular location despite the cooling time being short (<10**9yr) 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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