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1 results

  • 3.20. OH/IR stars as signposts for ancient starburst activity in the Galactic center
  • L.O. Sjouwerman, H.J. Habing, H.J. van Langevelde, M. Lindqvist, A. Winnberg
  • Journal: Symposium - International Astronomical Union / Volume 184 / 1998
  • Published online by Cambridge University Press: 25 May 2016, pp. 129-130
  • Print publication: 1998
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    We have surveyed the Galactic center (GC) for OH/IR stars, evolved late-type stars of different masses - and thus ages - in a short-lived stage of heavy mass-loss. By observing the 1612 MHz OH masers generated in their circumstellar shells, it is found that a considerable fraction of these OH/IR stars has the same high-valued shell expansion velocity of 19 km s−1.