V445 Puppis: Helium Nova on a Massive White Dwarf

  title={V445 Puppis: Helium Nova on a Massive White Dwarf},
  author={Mariko Kato and Izumi Hachisu},
  journal={The Astrophysical Journal Letters},
  pages={L107 - L110}
  • M. Kato, I. Hachisu
  • Published 14 October 2003
  • Physics, Geology
  • The Astrophysical Journal Letters
The 2000 outburst of V445 Puppis shows unique properties, such as the absence of hydrogen, the enrichment of helium and carbon, and the slow development of the light curve with a small amplitude that does not resemble any classical novae. This object has been suggested to be the first example of a helium nova. We calculate theoretical light curves of helium novae and reproduce the observational light curve of V445 Pup. Modeling indicates a very massive white dwarf (WD), more massive than 1.3 M… 

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