Spatially Resolved STIS Spectroscopy of Betelgeuse's Outer Atmosphere

  title={Spatially Resolved STIS Spectroscopy of Betelgeuse's Outer Atmosphere},
  author={Alex Lobel and Jason Paul Aufdenberg and Andrea K. Dupree and Robert L. Kurucz and Robert Phillip Stefanik and Guillermo Torres},
  • Alex Lobel, Jason Paul Aufdenberg, +3 authors Guillermo Torres
  • Published 2003
  • Physics
  • We present spatially resolved spectra observed with the Space Telescope Imaging Spectrograph on the Hubble Space Telescope of the upper chromosphere and dust envelope of Betelgeuse (α Orionis, M2 Iab). In the fall of 2002 a set of five high-resolution near-UV spectra was obtained by scanning at intensity peak-up position and four off-limb target positions up to one arcsecond, using a small aperture (200 by 63 mas), to investigate the thermal conditions and flow dynamics in the outer atmosphere… CONTINUE READING

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