A model for the 1987 outburst of the recurrent nova U Scorpii

Details A model for the 1987 outburst of the recurrent nova U Scorpii A model for the 1987 outburst of the recurrent nova U Scorpii

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...325l..35s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 325, Feb. 15, 1988, p. L35-L38.

Astronomy and Astrophysics

Astrophysics

86

Cataclysmic Variables, Novae, Stellar Mass Accretion, Stellar Models, White Dwarf Stars, Chandrasekhar Equation, Cyanogen, Periodic Variations, Stellar Evolution, Stellar Mass Ejection

Scientific paper

U Sco is the recurrent nova with the shortest known recurrence time (8 yr). Therefore, the authors have simulated the outburst of U Sco by accreting material, with a solar abundance of the CNO nuclei, at a rate of 1.1×10-6M_sun;yr-1 onto a 1.35 M_sun; white dwarf. One of the most important results is that it takes this evolutionary sequence only ≡2.6 yr to reach runaway conditions and ultimately eject 4×10-7M_sun; moving with speeds exceeding ≡400 km s-1. A major fraction of the accreted material remains on the surface of the white dwarf so that it must be growing toward the Chandrasekhar limit and will ultimately suffer a supernova explosion.

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