Accretion onto hot white dwarfs in relation to symbiotic novae

Journal Article · Thu Jun 01 04:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/167494· OSTI ID:5667468

Livio, M; Prialnik, D; Regev, O ^[1]

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1. Technion - Israel Institute of Technology, Haifa

Numerical calculations are used to study the hydrodynamic evolution of a hot white dwarf with 1 solar mass accreting hydrogen-rich matter at rates between 10 to the -8th and 10 to the -6th solar masses/yr. It is found that for accretion at a rate of about 10 to the -8th solar masses/yr, nova-type outbursts of long duration occur at intervals of about 1500 yr. About half of the accreted envelope is ejected during these outbursts. At a rate of about 10 to the -7th solar masses/yr, the star alternates between comparable periods at a high plateau luminosity and giant dimensions and periods at a low luminosity and white dwarf dimension. At 10 to the -6th solar masses/yr, equilibrium is achieved with a typical red giant luminosity supported by steady hydrogen burning. It is concluded that symbiotic novae are more likely to occur in detached systems involving wind accretors. Thus, the contribution of symbiotic stars to the frequency of type I supernovae is severely constrained. 39 refs.

• OSTI ID: 5667468
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 341; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BINARY STARS
BOLOMETERS
CONSTRAINTS
DWARF STARS
ELEMENTS
ERUPTIVE VARIABLE STARS
FLUID MECHANICS
GIANT STARS
HYDRODYNAMICS
HYDROGEN
HYDROGEN BURNING
LUMINOSITY
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MECHANICS
NONMETALS
NOVAE
NUMERICAL SOLUTION
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RED GIANT STARS
STAR ACCRETION
STAR BURNING
STAR EVOLUTION
STAR MODELS
STARS
STELLAR ACTIVITY
STELLAR WINDS
SUPERNOVAE
SYMBIOTIC STARS
VARIABLE STARS
WHITE DWARF STARS