White dwarf models of supernovae and cataclysmic variables

K. Nomoto, M. Hashimoto

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

If the accreting white dwarf increases its mass to the Chandrasekhar mass, it will either explode as a Type I supernova or collapse to form a neutron star. In fact, there is a good agreement between the exploding white dwarf model for Type I supernovae and observations. We describe various types of evolution of accreting white dwarfs as a function of binary parameters (i.e, composition, mass, and age of the white dwarf, its companion star, and mass accretion rate), and discuss the conditions for the precursors of exploding or collapsing white dwarfs, and their relevance to cataclysmic variables. Particular attention is given to helium star cataclysmics which might be the precursors of some Type I supernovae or ultrashort period X-ray binaries. Finally we present new evolutionary calculations using the updated nuclear reaction rates for the formation of O+Ne+Mg white dwarfs, and discuss the composition structure and their relevance to the model for neon novae.

Original languageEnglish
Pages (from-to)395-411
Number of pages17
JournalAstrophysics and Space Science
Volume131
Issue number1-2
DOIs
Publication statusPublished - Mar 1 1987

Fingerprint

cataclysmic variables
supernovae
dwarf stars
companion stars
novae
B stars
neon
nuclear reactions
reaction rate
helium
neutron stars
reaction kinetics
accretion
x rays

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

White dwarf models of supernovae and cataclysmic variables. / Nomoto, K.; Hashimoto, M.

In: Astrophysics and Space Science, Vol. 131, No. 1-2, 01.03.1987, p. 395-411.

Research output: Contribution to journalArticle

Nomoto, K. ; Hashimoto, M. / White dwarf models of supernovae and cataclysmic variables. In: Astrophysics and Space Science. 1987 ; Vol. 131, No. 1-2. pp. 395-411.
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