The enigmatic nature of the circumstellar envelope and bow shock surrounding Betelgeuse as revealed by Herschel - I. Evidence of clumps, multiple arcs, and a linear bar-like structure

@article{Decin2012TheEN,
  title={The enigmatic nature of the circumstellar envelope and bow shock surrounding Betelgeuse as revealed by Herschel - I. Evidence of clumps, multiple arcs, and a linear bar-like structure},
  author={Leen Decin and Nick L. J. Cox and Pierre Royer and A. J. van Marle and Bart K. Vandenbussche and Djazia Ladjal and Franz Kerschbaum and Roland Ottensamer and Michael J. Barlow and Joris Blommaert and Haley L. Gomez and Martin A. T. Groenewegen and Tanya L. Lim and Bruce M. Swinyard and Christoffel Waelkens and A. Tielens},
  journal={Astronomy and Astrophysics},
  year={2012},
  volume={548}
}
Context. The interaction between stellar winds and the interstellar medium (ISM) can create complex bow shocks. The photometers on board the Herschel Space Observatory are ideally suited to studying the morphologies of these bow shocks.Aims. We aim to study the circumstellar environment and wind-ISM interaction of the nearest red supergiant, Betelgeuse.Methods. Herschel PACS images at 70, 100, and 160 μ m and SPIRE images at 250, 350, and 500 μ m were obtained by scanning the region around… 
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