The mass loss of C-rich giants

  title={The mass loss of C-rich giants},
  author={Jacques Bergeat and L. Chevallier},
  journal={Astronomy and Astrophysics},
The mass loss rates, expansion velocities and dust-to-gas density ratios from millimetric observations of 119 carbon- rich giants are compared, as functions of stellar parameters, to the predictions of recent hydrodynamical models. Distances and luminosities previously estimated from HIPPARCOS data, masses from pulsations and C/O abundance ratios from spec- troscopy, and effective temperatures from a new homogeneous scale, are used. Predicted and observed mass loss rates agree fairly well, as… 

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