Discovery of a vast ionized gas cloud in the M51 system

  title={Discovery of a vast ionized gas cloud in the M51 system},
  author={Aaron E. Watkins and J. Christopher Mihos and Matthew A. Bershady and Paul Harding},
  • Aaron E. Watkins, J. Christopher Mihos, +1 author Paul Harding
  • Published 2018
  • Physics
  • We present the discovery of a vast cloud of ionized gas (hereafter, the Cloud) 13' (32 kpc) north of the interacting system M51. We detected this cloud via deep narrowband imaging with the Burrell Schmidt Telescope, where it appears as an extended, diffuse Hα-emitting feature with no embedded compact regions. The Cloud spans ~10' × 3' (25 × 7.5 kpc) in size and has no stellar counterpart; comparisons with our previous deep broadband imaging show no detected continuum light to a limit of μ lim,B… CONTINUE READING

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