On the progenitor of V838 Monocerotis

  title={On the progenitor of V838 Monocerotis},
  author={Romuald Tylenda and Noam Soker and Ryszard Szczerba},
  journal={Astronomy and Astrophysics},
We summarize and analyze the available observational data on the progenitor and the environment of V838 Mon. From the available photometric data for the progenitor of V838 Mon we exclude the possibility that the object before eruption was an evolved red giant star (AGB or RGB star). We find that most likely it was a main sequence or pre-main sequence star of ${\sim} 5{-}10~ M_\odot$. From the light echo structure and evolution we conclude that the reflecting dust is of interstellar nature… 
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