The shock-heated atmosphere of an asymptotic giant branch star resolved by ALMA

  title={The shock-heated atmosphere of an asymptotic giant branch star resolved by ALMA},
  author={Wouter H. T. Vlemmings and Theo Khouri and Eamon O’Gorman and Elvire De Beck and Elizabeth M. Humphreys and Boy Lankhaar and M. Maercker and H. Olofsson and Sofia Ramstedt and Daniel Tafoya and Aki Takigawa},
  journal={Nature Astronomy},
Our current understanding of the chemistry and mass-loss processes in Sun-like stars at the end of their evolution depends critically on the description of convection, pulsations and shocks in the extended stellar atmosphere1. Three-dimensional hydrodynamical stellar atmosphere models provide observational predictions2, but so far the resolution to constrain the complex temperature and velocity structures seen in the models has been lacking. Here we present submillimetre continuum and line… 

Resolving the extended stellar atmospheres of asymptotic giant branch stars at (sub)millimetre wavelengths

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