A new all-sky map of Galactic high-velocity clouds from the 21-cm HI4PI survey

  title={A new all-sky map of Galactic high-velocity clouds from the 21-cm HI4PI survey},
  author={T Westmeier},
  journal={Monthly Notices of the Royal Astronomical Society},
  • T. Westmeier
  • Published 2018
  • Physics
  • Monthly Notices of the Royal Astronomical Society
High-velocity clouds (HVCs) are neutral or ionised gas clouds in the vicinity of the Milky Way that are characterised by high radial velocities inconsistent with participation in the regular rotation of the Galactic disc. Previous attempts to create a homogeneous all-sky HI map of HVCs have been hampered by a combination of poor angular resolution, limited surface brightness sensitivity and suboptimal sampling. Here, a new and improved HI map of Galactic HVCs based on the all-sky HI4PI survey… Expand

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