CNO in evolved intermediate mass stars

  title={CNO in evolved intermediate mass stars},
  author={R. Smiljanic and B. Barbuy and J. D. Medeiros and A. Maeder},
  journal={Astronomy and Astrophysics},
In order to investigate the possible influence of rotation on the efficiency of the first dredge-up we determined atmospheric parameters, masses, and abundances of carbon, nitrogen, and oxygen in a sample of evolved intermediate mass stars. We used high resolution spectra and conducted a model atmosphere analysis. The abundances were calculated through spectral synthesis and compared to the predictions of rotating and non-rotating evolutionary models. Almost all those objects in our sample… Expand
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