Binary population synthesis for the core-degenerate scenario of type Ia supernova progenitors

Abstract

The core-degenerate (CD) scenario has been suggested to be a possible progenitor model of type Ia supernovae (SNe Ia), in which a carbon-oxygen white dwarf (CO WD) merges with the hot CO core of a massive asymptotic giant branch (AGB) star during their common-envelope phase. However, the SN Ia birthrates for this scenario are still uncertain. We conducted a detailed investigation into the CD scenario and then gave the birthrates for this scenario using a detailed Monte Carlo binary population synthesis approach. We found that the delay times of SNe Ia from this scenario are ~70Myrs-1400Myrs, which means that the CD scenario contributes to young SN Ia populations. The Galactic SN Ia birthrates for this scenario are in the range of ~7.4*10^{-5} yr^{-1}-3.7*10^{-4}yr^{-1}, which roughly accounts for ~2-10% of all SNe Ia. This indicates that, under the assumptions made here, the CD scenario only contributes a small portion of all SNe Ia, which is not consistent with the results of Ilkov & Soker (2013).

13 pages, 10 figures, accepted by Research in Astronomy and Astrophysics

References in corpus (14)

• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star
• The Luminous and Carbon-Rich Supernova 2006gz: A Double Degenerate Merger?
• Binary Star Origin of High Field Magnetic White Dwarfs
• Type Ia Supernovae as Stellar Endpoints and Cosmological Tools
• Evidence for Two Distinct Populations of Type Ia Supernovae
• The single-degenerate channel for the progenitor of type Ia supernovae with different metallicities
• Evidence for short-lived SN Ia progenitors
• Progenitors of Type Ia Supernovae: Binary Stars with White Dwarf Companions
• A New Determination of the High Redshift Type Ia Supernova Rates with the Hubble Space Telescope Advanced Camera for Surveys
• On the progenitors of super-Chandrasekhar mass type Ia supernovae
• Merging Binary Stars and the magnetic white dwarfs
• The hybrid CONe WD + He star scenario for the progenitors of type Ia supernovae
• On the evolution of rotating accreting white dwarfs and type Ia supernovae

Cited by in corpus (3)

• The White Dwarf Binary Pathways Survey VI: two close post common envelope binaries with TESS light curves
• Oxygen-neon rich merger during common envelope evolution
• The core-degenerate scenario for the progenitors of type Ia supernovae