author={Jonathan Mackey and Shazrene Mohamed and Hilding R. Neilson and Norbert Langer and Dominique M.-A. Meyer AIfA and Bonn and H Germany and Saao and South Africa},
  journal={The Astrophysical Journal},
A significant fraction of massive stars are moving supersonically through the interstellar medium (ISM), either due to disruption of a binary system or ejection from their parent star cluster. The interaction of their wind with the ISM produces a bow shock. In late evolutionary stages these stars may undergo rapid transitions from red to blue and vice versa on the Hertzsprung-Russell diagram, with accompanying rapid changes to their stellar winds and bow shocks. Recent three-dimensional… 

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