Accretion onto hot white dwarfs in relation to symbiotic novae

Abstract

view Abstract Citations (44) References (33) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Accretion onto Hot White Dwarfs in Relation to Symbiotic Novae Livio, Mario ; Prialnik, Dina ; Regev, Oded Abstract 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. Publication: The Astrophysical Journal Pub Date: June 1989 DOI: 10.1086/167494 Bibcode: 1989ApJ...341..299L Keywords: Binary Stars; Novae; Stellar Evolution; Stellar Mass Accretion; Symbiotic Stars; White Dwarf Stars; Bolometers; Hydrogen; Light Curve; Astrophysics; STARS: ACCRETION; STARS: BINARIES; STARS: EVOLUTION; STARS: NOVAE; STARS: SYMBIOTIC; STARS: WHITE DWARFS full text sources ADS | data products SIMBAD (13)