Near-IR spectra of red supergiants and giants I. Models with solar and with mixing-induced surface abundance ratios

  title={Near-IR spectra of red supergiants and giants I. Models with solar and with mixing-induced surface abundance ratios},
  author={Ariane Lanccon and Peter Hauschildt and Djazia Ladjal and Mustapha Mouhcine},
  journal={Astronomy and Astrophysics},
Context. It remains difficult to interpret the near-IR emission of young stellar populations. One main reason is our incomplete understanding of the spectra of luminous red stars. Aims. This work provides a grid of theoretical spectra of red giant and supergiant stars, that extends through optical and nearIR wavelengths. For the first time, models are also provided with modified surface abundances of C, N and O, as a step towards accounting for the changes that occur due to convective dredge-up… 

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