Unveiling Mira stars behind the molecules - Confirmation of the molecular layer model with narrow band near-infrared interferometry

@article{Perrin2004UnveilingMS,
  title={Unveiling Mira stars behind the molecules - Confirmation of the molecular layer model with narrow band near-infrared interferometry},
  author={G. Perrin and S. Ridgway and B. Mennesson and W. Cotton and J. Woillez and T. Verhoelst and P. Schuller and V. C. Foresto and W. Traub and R. Millan-Gabet and M. Lacasse},
  journal={Astronomy and Astrophysics},
  year={2004},
  volume={426},
  pages={279-296}
}
We have observed Mira stars with the FLUOR beamcombiner on the IOTA interferometer in narrow bands around $2.2\,\mu$m wavelength. We find systematically larger diameters in bands contaminated by water vapor and CO. The visibility measurements can be interpreted with a model comprising a photosphere surrounded by a thin spherical molecular layer. The high quality of the fits we obtain demonstrates that this simple model accounts for most of the star's spatial structure. For each star and each… Expand
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