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OH Maser Emission from Young Planetary Nebulae

  • A. Zijlstra
  • S. R. Pottasch
  • P. te Lintel
  • C. Bignell
Conference paper
Part of the International Astronomical Union / Union Astronomique Internationale book series (IAUS, volume 131)

Abstract

OH/IR stars are now generally accepted to be progenitors of planetary nebulae. We have carried out a project to try to find objects in the transition phase between OH/IR stars and PN. Transition objects should be characterized by having both continuum radio emission and a l6l2 MHz OH maser line. The continuuum emission would indicate that the central star has become hot enough to ionize part of the envelope, while the OH maser indicates that a large part of the envelope is still neutral. Only one such object was known, namely Vy 2-2.

Keywords

Transition Phase Radio Telescope Precise Position Maser Line High Detection Rate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© International Astronomical Union 1989

Authors and Affiliations

  • A. Zijlstra
    • 1
  • S. R. Pottasch
    • 2
  • P. te Lintel
    • 2
  • C. Bignell
    • 1
  1. 1.NRAO/VLAUSA
  2. 2.Kaypteyn InstituteGroningenThe Netherlands

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