2002/02/28 by R. M. Johnstone, S. W. Allen, A. C. Fabian +1 · 183 citations
Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Cluster (spacecraft) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy cluster #Metallicity #Physics #Solar mass #Stellar, planetary, and galactic studies #Surface brightness #astro-ph
paper · pdf · doi:10.1046/j.1365-8711.2002.05743.x
published in Monthly Notices of the Royal Astronomical Society 336(1), 299-308 (Oxford University Press) · 10 pages, 12 figures. Accepted by MNRAS. Minor changes following referee's comments
arxiv created 2002/06/11 · openalex publication_date 2002/10/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.