A composite light curve model of the symbiotic nova pu vul (1979)

M. Kato, J. Mikoiłajewska, I. Hachisu

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1 Citation (Scopus)

Abstract

PU Vul (1979) is a symbiotic nova that shows a long-lasting flat optical peak followed by a slow decline. We made a quasi-evolution model for outbursts on a 0.6 M white dwarf consisting of a series of static solutions with optically-thin winds. Our theoretical models reproduce well the observed visual/UV light curves as well as the new estimates of the temperature and radius of the hot component. We also modeled the light curve of the 1980 and 1994 eclipses as the total eclipse occulted by a pulsating M-giant companion star. In the second eclipse, the visual magnitude is dominated by nebular emission which is possibly ejected from the hot component between 1990 to 2000. We have quantitatively estimated three components of emission, i.e., the white dwarf, companion and nebular, and made a composite light curve that represents well the evolution of the PU Vul outburst.

Original languageEnglish
Pages (from-to)157-164
Number of pages8
JournalBaltic Astronomy
Volume21
Issue number1-2
Publication statusPublished - 2012 Jun 11

Keywords

  • Cataclysmic variables
  • Individual (pu vul)
  • Novae
  • Stats
  • Symbiotic
  • White dwarfs

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Kato, M., Mikoiłajewska, J., & Hachisu, I. (2012). A composite light curve model of the symbiotic nova pu vul (1979). Baltic Astronomy, 21(1-2), 157-164.