Water maser emission toward ultracompact HII regions

  • Peter Hofner
  • Ed Churchwell
7. Water Masers in Star-Forming Regions
Part of the Lecture Notes in Physics book series (LNP, volume 412)


We present preliminary results of a recent VLA observation of the 616−523 masing transition of interstellar H2O toward the ultracompact HII regions G29.96 − 0.02 and G5.89 − 0.39. The positions of the maser spots relative to the ionized gas are given and their radial velocities are compared with velocities obtained from molecular line and hydrogen recombination line observations.


Massive Star Molecular Line Radio Continuum Maser Spot Bipolar Outflow 
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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • Peter Hofner
    • 1
  • Ed Churchwell
    • 1
  1. 1.Washburn ObservatoryUniversity of Wisconsin-MadisonMadison

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