Type Ia Supernovae: An Examination of Potential Progenitors and the Redshift Distribution

Details Type Ia Supernovae: An Examination of Potential Progenitors and the Redshift Distribution Type Ia Supernovae: An Examination of Potential Progenitors and the Redshift Distribution

1997-11-18

arxiv.org/abs/astro-ph/9711201v1

Astronomy and Astrophysics

Astrophysics

29 pages, Latex, 6 figures, aasms4.sty, psfig.sty, to appear in The Astrophysical Journal

Scientific paper

10.1086/305455

We examine the possibility that supernovae type Ia (SN Ia) are produced by white dwarfs accreting from Roche-lobe filling evolved companions, under the assumption that a strong optically thick stellar wind from accretor is able to stabilize the mass transfer. We show that if a mass transfer phase on a thermal timescale precedes a nuclear burning driven phase, then such systems (of which the supersoft X-ray sources are a subgroup) can account for about 10% of the inferred SN Ia rate. In addition, we examine the cosmic history of the supernova rate, and we show that the ratio of the rate of SN Ia to the rate of supernovae produced by massive stars (supernovae of types II, Ib, Ic) should increase from about z = 1 towards lower redshifts.

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