Other
Scientific paper
Nov 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aipc..637...47s&link_type=abstract
CLASSICAL NOVA EXPLOSIONS: International Conference on Classical Nova Explosions. AIP Conference Proceedings, Volume 637, pp. 4
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2
Novae, Dwarf Novae, Recurrent Novae, And Other Cataclysmic Variables, Cataclysmic Binaries, Symbiotic Stars, Faint Blue Stars, White Dwarfs, Degenerate Stars, Nuclei Of Planetary Nebulae, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages
Scientific paper
We perform evolutionary calculations of binary stars to find progenitors of systems with parameters similar to the recurrent novae U Sco. We show that a U Sco type-system may be formed starting with an initial binary system which has a low-mass carbon-oxygen white dwarf as an accretor. Since the evolutionary stage of the secondary is not well known, we calculate sequences with hydrogen rich and helium rich secondaries. The evolution of the binary may be devided into several observable stages as: classical nova, supersoft X-ray source with stable hydrogen shell burning and strong wind phases, ending up with the formation of a massive white dwarf near the Chandrasekhar mass limit. We follow the chemical evolution of the secondary as well as of the matter lost from the system, and we show that observed 12C/13C and N/C ratios may give some information about the nature of the binary.
Ergma Ene
Gerskevits Jelena
Sarna Marek J.
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