Neutral Hydrogen in Arp 158

  title={Neutral Hydrogen in Arp 158},
  author={Mansie G. Iyer and Caroline E. Simpson and STEPHEN T. Gottesman and Benjamin K. Malphrus},
  journal={The Astronomical Journal},
  pages={985 - 996}
We present 21 cm observations of Arp 158. We have performed a study of the neutral hydrogen (H I) to help us understand the overall formation and evolution of this system. This is a disturbed system with distinct optical knots connected by a linear structure embedded in luminous material. There is also a diffuse spray to the southeast. The H I seems to be made up of three distinct, kinematically separate systems. Arp 158 bears a certain optical resemblance to NGC 520 (Arp 157), which has been… 
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