Delay times and rates for Type Ia supernovae and thermonuclear explosions from double-detonation sub-Chandrasekhar mass models

A.J. Ruiter, K. Belczynski, S.A. Sim, W. Hillebrandt, C.L. Fryer, M. Fink, M. Kromer

Research output: Contribution to journalArticlepeer-review

108 Citations (Scopus)

Abstract

We present theoretical delay times and rates of thermonuclear explosions that are thought to produce Type Ia supernovae (SNe Ia), including the double-detonation sub-Chandrasekhar mass model, using the population synthesis binary evolution code startrack. If detonations of sub-Chandrasekhar mass carbon-oxygen white dwarfs following a detonation in an accumulated layer of helium on the white dwarf's surface ('double-detonation' models) are able to produce thermonuclear explosions which are characteristically similar to those of SNe Ia, then these sub-Chandrasekhar mass explosions may account for at least some substantial fraction of the observed SN Ia rate. Regardless of whether all double-detonations look like 'normal' SNe Ia, in any case the explosions are expected to be bright and thus potentially detectable. Additionally, we find that the delay time distribution of double-detonation sub-Chandrasekhar mass SNe Ia can be divided into two distinct formation channels: the 'prompt' helium-star channel with delay times
Original languageEnglish
Pages (from-to)408-419
Number of pages12
JournalMonthly Notices of the Royal Astronomical Society
Volume417
Issue number1
DOIs
Publication statusPublished - 01 Oct 2011

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Copyright 2011 Elsevier B.V., All rights reserved.

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