The Recurrent Nova U Scorpii - A Type Ia Supernova Progenitor

Details The Recurrent Nova U Scorpii - A Type Ia Supernova Progenitor The Recurrent Nova U Scorpii - A Type Ia Supernova Progenitor

2001-09-28

arxiv.org/abs/astro-ph/0109553v1

Astronomy and Astrophysics

Astrophysics

2 pages, 2 figures, Latex, uses newpasp.sty; to appear in `The Physics of Cataclysmic Variables and Related Objects', ASP Conf

Scientific paper

We derive the mass of the white dwarf in the eclipsing recurrent nova U Sco from the radial velocity semi-amplitudes of the primary and secondary stars. Our results give a high white dwarf mass of M_1 = 1.55 \pm 0.24M_\odot, consistent with the thermonuclear runaway model of recurrent nova outbursts. We confirm that U Sco is the best Type Ia supernova progenitor known, and predict that the time to explosion is within ~700,000 years.

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