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    • R Aquarii: First Detection of Circumstellar SiO Maser Proper Motions 

      Boboltz, D. A.; Diamond, P. J.; Kemball, A. J. (IOP PUBLISHING LTD, 1997-10)
      We have made the first detection of circumstellar SiO maser proper motions in the envelope of a late-type star. Using the Very Long Baseline Array (VLBA), we have obtained observations at four epochs of the 43 GHz, upsilon ...