The core-degenerate scenario for the progenitors of type Ia supernovae

Abstract

The origin of the progenitors of type Ia supernovae (SNe Ia) is still uncertain. The core-degenerate (CD) scenario has been proposed as an alternative way for the production of SNe Ia. In this scenario, SNe Ia are formed at the final stage of common-envelope evolution from a merger of a carbon-oxygen white dwarf (CO WD) with the CO core of an asymptotic giant branch companion. However, the birthrates of SNe Ia from this scenario are still not well determined. In this work, we performed a detailed investigation on the CD scenario based on a binary population synthesis approach. The SN Ia delay times from this scenario are basically in the range of 90Myr-2500Myr, mainly contributing to the observed SNe Ia with short and intermediate delay times although this scenario can also produce some old SNe Ia. Meanwhile, our work indicates that the Galactic birthrates of SNe Ia from this scenario are no more than 20% of total SNe Ia due to more careful treatment of mass transfer. Although the SN Ia birthrates in the present work are lower than those in Ilkov & Soker, the CD scenario cannot be ruled out as a viable mechanism for the formation of SNe Ia. Especially, SNe Ia with circumstellar material from this scenario contribute to 0.7-10% of total SNe Ia, which means that the CD scenario can reproduce the observed birthrates of SNe Ia like PTF 11kx. We also found that SNe Ia happen systemically earlier for a high value of metallicity and their birthrates increase with metallicity.

13 pages, 8 figures, 1 table, accepted for publication in MNRAS

References in corpus (18)

• 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?
• 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
• The single-degenerate channel for the progenitor of type Ia supernovae with different metallicities
• On the progenitors of super-Chandrasekhar mass type Ia supernovae
• Merging Binary Stars and the magnetic white dwarfs
• The fraction of type Ia supernovae exploding inside planetary nebulae (SNIPs)
• Modelling the formation of double white dwarfs
• The Internal Shear of Type Ia Supernova Progenitors During Accretion and Simmering
• On the evolution of rotating accreting white dwarfs and type Ia supernovae
• The violent white dwarf merger scenario for the progenitors of type Ia supernovae
• Smoothed Particle Hydrodynamics simulations of the core-degenerate scenario for Type Ia supernovae
• The circumstellar matter of supernova 2014J and the core-degenerate scenario
• On the Common Envelope Efficiency
• A Luminous Peculiar Type Ia Supernova SN 2011hr: More Like SN 1991T or SN 2007if?
• Binary population synthesis for the core-degenerate scenario of type Ia supernova progenitors

Cited by in corpus (13)

• Mass-accreting white dwarfs and type Ia supernovae
• Supernovae Ia in 2019 (review): a rising demand for spherical explosions
• Where are the double-degenerate progenitors of type Ia supernovae?
• Type Ia Supernova Sub-classes and Progenitor Origin
• Constraining Type Ia supernova explosions and early flux excesses with the Zwicky Transient Factory
• Wind Roche Lobe Overflow as a way to make type Ia supernova from the widest symbiotic systems
• The CO White Dwarf + Intermediate Mass/Massive Star Binary Evolution: Possible Merger Origins for Peculiar Type Ia and II Supernovae
• Oxygen-neon rich merger during common envelope evolution
• Thermonuclear and Electron-Capture Supernovae from Stripped-Envelope Stars
• Imagery and UV Spectroscopy of the LMC Supernova Remnant N103B Using HST
• High-velocity feature as the indicator of the stellar population of Type Ia supernovae
• Possible white dwarf progenitors of type Ia supernovae
• A Young Supernova Selection Pipeline For The LSST Era