The dust disk and companion of the nearby AGB star L2 Puppis - SPHERE/ZIMPOL polarimetric imaging at visible wavelengths

@article{Kervella2015TheDD,
  title={The dust disk and companion of the nearby AGB star L2 Puppis - SPHERE/ZIMPOL polarimetric imaging at visible wavelengths},
  author={P. Kervella and M. Montarg{\`e}s and E. Lagadec and S. Ridgway and X. Haubois and J. Girard and K. Ohnaka and G. Perrin and A. Gallenne},
  journal={Astronomy and Astrophysics},
  year={2015},
  volume={578}
}
The bright southern star L2 Pup is a particularly prominent asymptotic giant branch (AGB) star, located at a distance of only 64 pc. We report new adaptive optics observations of L2 Pup at visible wavelengths with the SPHERE/ZIMPOL instrument of the VLT that confirm the presence of the circumstellar dust disk discovered recently. This disk is seen almost almost edge-on at an inclination of 82 . The signature of its three-dimensional structure is clearly observed in the map of the degree of… Expand
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There is a strong coupling between the depletion of gas-phase SiO and gas acceleration in the inner envelope of M-type AGB stars, which could be explained by the condensation of SiO into dust grains. Expand
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