VLBA SiO observations of bright O-rich AGB stars

@article{Cotton2008VLBASO,
  title={VLBA SiO observations of bright O-rich AGB stars},
  author={William D. Cotton and Guy Perrin and Beatriz Lopez},
  journal={Astronomy and Astrophysics},
  year={2008},
  volume={477},
  pages={853-863}
}
We present the results of observations of the SiO masers at 7 mm wavelength in several oxygen rich Asymptotic Giant Branch (AGB) stars. These observations were coordinated with observations using the ESO VLTI/MIDI interferometer at 10 μm wavelength. These stars are o Ceti (Mira), U Herculis (U Her), OH26.5+0.6, R Leonis (R Leo), and W Hydrae (W Hya). Both total intensity and linear polarizations are imaged. Linear radial features seen in o Ceti may be associated with an X-ray flare seen a year… 

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