Evidence for Sub-Chandrasekhar Mass Type Ia Supernovae from an Extensive Survey of Radiative Transfer Models

Abstract

There are two classes of viable progenitors for normal Type Ia supernovae (SNe Ia): systems in which a white dwarf explodes at the Chandrasekhar mass ($M_{ch}$), and systems in which a white dwarf explodes below the Chandrasekhar mass (sub-$M_{ch}$). It is not clear which of these channels is dominant; observations and light curve modeling have provided evidence for both. Here we use an extensive grid of 4500 time-dependent, multiwavelength radiation transport simulations to show that the sub-$M_{ch}$ model can reproduce the entirety of the width-luminosity relation (WLR), while the $M_{ch}$ model can only produce the brighter events $(0.8<\Delta M_{15}(B)<1.55)$, implying that fast-declining SNe Ia come from sub-$M_{ch}$ explosions. We do not assume a particular theoretical paradigm for the progenitor or explosion mechanism, but instead construct parameterized models that vary the mass, kinetic energy, and compositional structure of the ejecta, thereby realizing a broad range of possible outcomes of white dwarf explosions. We provide fitting functions based on our large grid of detailed simulations that map observable properties of SNe Ia such as peak brightness and light curve width to physical parameters such as ${}^{56}\mathrm{Ni}$ and total ejected mass. These can be used to estimate the physical properties of observed SNe Ia.

arXiv commentAccepted to ApJL

References in corpus (42)

• Type Ia Supernova Explosion Models
• Observational clues to the progenitors of Type-Ia supernovae
• The Reddening-Free Decline Rate Versus Luminosity Relationship for Type Ia Supernovae
• Three-dimensional delayed-detonation models with nucleosynthesis for Type Ia supernovae
• Supernova 2011fe from an Exploding Carbon-Oxygen White Dwarf Star
• Double-detonation sub-Chandrasekhar supernovae: can minimum helium shell masses detonate the core?
• Seeing the Collision of a Supernova with its Companion Star
• Faint Thermonuclear Supernovae from AM Canum Venaticorum Binaries
• Spectropolarimetry of Supernovae
• Detonations in Sub-Chandrasekhar Mass C+O White Dwarfs
• Progenitors of type Ia supernovae
• Nearby Supernova Factory Observations of SN 2007if: First Total Mass Measurement of a Super-Chandrasekhar-Mass Progenitor
• Time Dependent Monte Carlo Radiative Transfer Calculations For 3-Dimensional Supernova Spectra, Lightcurves, and Polarization
• Sub-Chandrasekhar Mass Models For Type Ia Supernovae
• A Compact Degenerate Primary-Star Progenitor of SN 2011fe
• Theoretical light curves for deflagration models of Type Ia supernova
• Secondary Maximum in the Near-Infrared Lightcurves of Type Ia Supernovae
• An asymmetric explosion as the origin of spectral evolution diversity in type Ia supernovae
• Type Ia Supernovae Strongly Interacting with Their Circumstellar Medium
• Surface Detonations in Double Degenerate Binary Systems Triggered by Accretion Stream Instabilities
• Spectrophotometric time series of SN 2011fe from the Nearby Supernova Factory
• On the evolution of rapidly rotating massive white dwarfs towards supernovae or collapses
• An upper limit on the contribution of accreting white dwarfs to the type Ia supernova rate
• Unstable Helium Shell Burning on Accreting White Dwarfs
• Constraints on the Progenitor Systems of Type Ia Supernovae
• The underluminous Type Ia Supernova 2005bl and the class of objects similar to SN 1991bg
• Type Ia supernova bolometric light curves and ejected mass estimates from the Nearby Supernova Factory
• Type Ia Supernova Light Curves
• One-dimensional delayed-detonation models of Type Ia supernovae: Confrontation to observations at bolometric maximum
• The ejected mass distribution of type Ia supernovae: A significant rate of non-Chandrasekhar-mass progenitors
• Synthetic light curves and spectra for three-dimensional delayed-detonation models of Type Ia supernovae
• Evidence for sub-Chandrasekhar-mass progenitors of Type Ia supernovae at the faint end of the width-luminosity relation
• Light and color curve properties of type Ia supernovae: Theory vs. Observations
• Signature of Electron Capture in Iron-Rich Ejecta of SN 2003du
• Monte Carlo Radiation Hydrodynamics with Implicit Methods
• Type Ia Single Degenerate Survivors Must Be Overluminous
• Critical ingredients of supernova Ia radiative-transfer modeling
• How do Type Ia Supernova Nebular Spectra Depend on Explosion Properties? Insights from Systematic non-LTE Modeling
• The detonation of a sub-Chandrasekhar-mass white dwarf at the origin of the low-luminosity Type Ia supernova 1999by
• Two classes of fast-declining type Ia supernovae
• Theoretical light curves of type Ia supernovae
• Spectral sequences of Type Ia supernovae. I. Connecting normal and sub-luminous SN Ia and the presence of unburned carbon

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