A light-curve model of the symbiotic nova PU Vul (1979): A very quiet explosion with long-lasting flat peak

Mariko Kato, Izumi Hachisu, Angelo Cassatella, Rosario González-Riestra

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Abstract

We present a light-curve model of the symbiotic nova PU Vul (Nova Vulpeculae 1979) that shows a long-lasting flat peak with no spectral indication of wind mass loss before decline. Our quasi-evolution models consisting of a series of static solutions explain both the optical flat peak and ultraviolet (UV) light curve simultaneously. The white dwarf mass is estimated to be ∼0.6 M. We also provide a new determination of the reddening, E(B - V) = 0.43 ±0.05, from UV spectral analysis. Theoretical light-curve fitting of UV 1455 Å provides the distance of d = 3.8 ± 0.7 kpc.

Original languageEnglish
JournalAstrophysical Journal
Volume727
Issue number2
DOIs
Publication statusPublished - 2011 Feb 1

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Keywords

  • Binaries: symbiotic
  • Novae, cataclysmic variables
  • Stars: individual (PU Vul)
  • Ultraviolet: stars
  • White dwarfs

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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