Head–tail clouds: drops to probe the diffuse Galactic halo

  title={Head–tail clouds: drops to probe the diffuse Galactic halo},
  author={Mary E. Putman and Destry R. Saul and E. Mets},
  journal={Monthly Notices of the Royal Astronomical Society},
A head–tail high-velocity cloud (HVC) is a neutral hydrogen halo cloud that appears to be interacting with the diffuse halo medium as evident by its compressed head trailed by a relatively diffuse tail. This paper presents a sample of 116 head–tail HVCs across the southern sky (d < 2°) from the H i Parkes All Sky Survey (HIPASS) HVC catalogue, which has a spatial resolution of 15.5 arcmin (45 pc at 10 kpc) and a sensitivity of  cm−2 (5σ). 35 per cent of the HIPASS compact and semi-compact HVCs… 
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