The circumstellar matter of supernova 2014J and the core-degenerate scenario

Abstract

I show that the circumstellar matter (CSM) of the type Ia supernova 2014J is too massive and its momentum too large to be accounted for by any but the core-degenerate (CD) scenario for type Ia supernovae. Assuming the absorbing gas is of CSM origin, the several shells responsible of the absorption potassium lines are accounted for by a mass loss episode from a massive asymptotic giant branch star during a common envelope phase with a white dwarf companion. The time-varying potassium lines can be accounted for by ionization of neutral potassium and the Na-from-dust absorption (NaDA) model. Before explosion some of the potassium resides in the gas phase and some in dust. Weakening in absorption strength is caused by potassium-ionizing radiation of the supernova, while release of atomic potassium from dust increases the absorption. I conclude that if the absorbing gas originated from the progenitor of SN 2014J, then a common envelope phase took place about 15,000 years ago, leading to the merging of the core with the white dwarf companion, i.e., the core-degenerate scenario. Else, the absorbing material is of interstellar medium origin.

Accepted to MNRAS

References in corpus (13)

• Variable Sodium Absorption in a Low-Extinction Type Ia Supernova
• Extensive HST Ultraviolet Spectra and Multi-wavelength Observations of SN 2014J in M82 Indicate Reddening and Circumstellar Scattering by Typical Dust
• No X-rays from the very nearby Type Ia SN2014J: constraints on its environment
• Constraints on the progenitor system and the environs of SN 2014J from deep radio observations
• Constraints on the Progenitor System of the Type Ia Supernova 2014J from Pre-Explosion Hubble Space Telescope Imaging
• The rate of WD-WD head-on collisions may be as high as the SNe Ia rate
• The fraction of type Ia supernovae exploding inside planetary nebulae (SNIPs)
• Constraining the double-degenerate scenario for Type Ia supernovae from merger ejected matter
• A hydrodynamical study of multiple-shell planetary nebulae. III. Expansion properties and internal kinematics: Theory versus observation
• Hubble-type outflows of the high-excitation, poly-polar planetary nebula NGC 6302 -- from expansion proper motions
• Time-Varying Potassium in High-Resolution Spectra of the Type Ia Supernova 2014J
• Modeling SNR G1.9+0.3 as a Supernova Inside a Planetary Nebula
• What sodium absorption lines tell us about type Ia supernovae

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• AREPO White Dwarf merger simulations resulting in edge-lit detonation and run-away hypervelocity companion
• Common envelope to explosion delay time distribution (CEEDTD) of type Ia supernovae
• Stellar evolution, SN explosion, and nucleosynthesis