The Case against the progenitor's carbon - to - oxygen ratio as a source of peak luminosity variations in Type Ia supernovae

  title={The Case against the progenitor's carbon - to - oxygen ratio as a source of peak luminosity variations in Type Ia supernovae},
  author={Friedrich K. Roepke and W Hillebrandt},
  journal={Astronomy and Astrophysics},
One of the major challenges for theoretical modeling of type Ia supernova explosions is to explain the diversity of these events and the empirically established correlation between their peak luminosity and light curve shape. In the framework of the so-called Chandrasekhar mass models, the progenitor's carbon-to-oxygen ratio has been suggested as a principal source of peak luminosity variations due to a variation in the production of radioactive 56 Ni during the explosion. We describe a mech… 

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