The last gasps of VY Canis Majoris: Aperture synthesis and adaptive optics imagery

@article{Monnier1998TheLG,
  title={The last gasps of VY Canis Majoris: Aperture synthesis and adaptive optics imagery},
  author={John D. Monnier and Peter G. Tuthill and Beatriz Lopez and Pierre Cruzal{\`e}bes and William C. Danchi and Caltech Space Radiation Laboratory and Observatoire de la C{\^o}te d'Azur and Mullard Radio Astronomy Observatory},
  journal={The Astrophysical Journal},
  year={1998},
  volume={512},
  pages={351-361}
}
We present new observations of the red supergiant VY CMa at 1.25, 1.65, 2.26, 3.08, and 4.8 km. Two complementary observational techniques were utilized: nonredundant aperture masking on the 10 m Keck I telescope, yielding images of the innermost regions at unprecedented resolution, and adaptive optics imaging on the ESO 3.6 m telescope at La Silla, attaining an extremely high (D105) peak-to-noise dynamic range over a wide —eld. For the —rst time the inner dust shell has been resolved in the… 

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