The Outer Wind of gamma Velorum

  title={The Outer Wind of gamma Velorum},
  author={Patrick F. Roche and M. D. Colling and Michael J. Barlow},
  journal={arXiv: Solar and Stellar Astrophysics},
Fine-structure mid-infrared emission lines with critical densities in the regime 10^4 to 10^6 cm^-3 can be employed to probe the outflow from Wolf-Rayet stars at radii of \sim 10^15 cm. Narrow-band mid-infrared imaging and spectroscopy of the nearest WR star to the sun, gamma Velorum is analysed for spatially resolved forbidden line emission in the Wolf-Rayet outer wind. The [S IV] 10.52 and [Ne II] 12.81 micron emission regions are found to be spatially extended, compared to unresolved… 

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