A super-Eddington wind scenario for the progenitors of type Ia supernovae: binary population synthesis calculations

Abstract

The super-Eddington wind scenario has been proposed as an alternative way for producing type Ia supernovae (SNe Ia). The super-Eddington wind can naturally prevent the carbon--oxygen white dwarfs (CO WDs) with high mass-accretion rates from becoming red-giant-like stars. Furthermore, it works in low-metallicity environments, which may explain SNe Ia observed at high redshifts. In this article, we systematically investigated the most prominent single-degenerate WD+MS channel based on the super-Eddington wind scenario. We combined the Eggleton stellar evolution code with a rapid binary population synthesis (BPS) approach to predict SN Ia birthrates for the WD+MS channel by adopting the super-Eddington wind scenario and detailed mass-accumulation efficiencies of H-shell flashes on the WDs. Our BPS calculations found that the estimated SN Ia birthrates for the WD+MS channel are ~0.009-0.315*10^{-3}{yr}^{-1} if we adopt the Eddington accretion rate as the critical accretion rate, which are much lower than that of the observations (<10% of the observed SN Ia birthrates). This indicates that the WD+MS channel only contributes a small proportion of all SNe Ia. The birthrates in this simulation are lower than previous studies, the main reason of which is that new mass-accumulation efficiencies of H-shell flashes are adopted. We also found that the critical mass-accretion rate has a significant influence on the birthrates of SNe Ia. Meanwhile, the results of our BPS calculations are sensitive to the values of the common-envelope ejection efficiency.

14 pages, 9 figures, 1 table, accepted for publication in Astronomy and Astrophysics

References in corpus (18)

• Type Ia Supernovae as Stellar Endpoints and Cosmological Tools
• Evidence for Two Distinct Populations of Type Ia Supernovae
• The hot subdwarf B + white dwarf binary KPD 1930+2752 - a Supernova Type Ia progenitor candidate
• Three-dimensional simulations of the interaction between Type Ia supernova ejecta and their main sequence companions
• The single-degenerate channel for the progenitor of type Ia supernovae with different metallicities
• Monte Carlo simulations of post-common-envelope white dwarf + main sequence binaries: comparison with the SDSS DR7 observed sample
• On type Ia supernovae and the formation of single low-mass white dwarfs
• The Stellar Ancestry of Supernovae in the Magellanic Clouds - I. the Most Recent Supernovae in the Large Magellanic Cloud
• Population synthesis for symbiotic stars with white dwarf accretors
• Progenitors of Type Ia Supernovae: Binary Stars with White Dwarf Companions
• On the progenitors of super-Chandrasekhar mass type Ia supernovae
• Hybrid C-O-Ne white dwarfs as progenitors of type Ia supernovae: dependence on Urca process and mixing assumptions
• The birth rate of SNe Ia from hybrid CONe white dwarfs
• Progenitor constraints on the Type-Ia supernova SN2011fe from pre-explosion Hubble Space Telescope HeII narrow-band observations
• On the evolution of rotating accreting white dwarfs and type Ia supernovae
• Search for surviving companions in type Ia supernova remnants
• On the Common Envelope Efficiency
• White-dwarf+main-sequence binaries identified from the tenth data release of Solan Digital Sky Survey