Cool X-ray emitting gas in the core of the Centaurus cluster of galaxies

  title={Cool X-ray emitting gas in the core of the Centaurus cluster of galaxies},
  author={Jeremy S Sanders and Andrew C. Fabian and S. W. Allen and R. Glenn Morris and James R. Graham and Robert H. Becker Department of Astronomy and Cambridge and Kipac and Stanford},
  journal={Monthly Notices of the Royal Astronomical Society},
We use a deep XMM-Newton Reflection Grating Spectrometer observation to examine the X-ray emission from the core of the Centaurus cluster of galaxies. We clearly detect Fe XVII emission at four separate wavelengths, indicating the presence of cool X-ray emitting gas in the core of the cluster. Fe ions from Fe XVII to xxiv are observed. The ratio of the Fe xvii 17.1 A lines to 15.0 A line and limits on O VII emission indicate a lowest detected temperature in the emitting region of 0.3 to 0.45… 

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