Abstract
We describe radial velocity observations of a large sample of apparently single white dwarfs in an effort to discover close, double-degenerate (DD) pairs which might comprise viable Type la Supernova progenitors. We have identified a number of candidate variables, including a new shortperiod subdwarf B/white dwarf pair. The observations appear to be in general agreement with the predictions of theory. Further observations are planned to solve for the orbital parameters of the candidates, from which it will be possible to place meaningful observational constraints both on DDs as SN Ia progenitors and, more generally, on the theory of binary star evolution.
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© 1997 Springer Science+Business Media Dordrecht
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Saffer, R.A., Livio, M. (1997). In Search of the Double Degenerate Progenitors of Type IA Supernovae. In: Isern, J., Hernanz, M., García-Berro, E. (eds) White Dwarfs. Astrophysics and Space Science Library, vol 214. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5542-7_45
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DOI: https://doi.org/10.1007/978-94-011-5542-7_45
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