SN 2020kyg and the rates of faint Iax Supernovae from ATLAS

Abstract

We present multi-wavelength follow-up observations of the ATLAS discovered faint Iax supernova SN 2020kyg that peaked at an absolute magnitude of $M_g\approx -14.9\pm 0.2$, making it another member of the faint Iax supernova population. The bolometric light curve requires only $\approx 7\times 10^{-3}$ M${}_{\odot }$ of radioactive ${}^{56}$Ni, with an ejected mass of $M_{\mathrm{ej}}\sim 0.4$ M${}_{\odot }$ and a low kinetic energy of $E\approx 0.05\pm 0.02\times 10^{51}$ erg. We construct a homogeneous volume-limited sample of 902 transients observed by ATLAS within 100 Mpc during a 3.5 year span. Using this sample, we constrain the rates of faint Iax ($M_r\gtrsim -16$) events within 60 Mpc at $12_{-8}^{+14}\%$ of the SN Ia rate. The overall Iax rate, at $15_{-9}^{+17}\%$ of the Ia rate, is dominated by the low-luminosity events, with luminous SNe Iax ($M_r\lesssim -17.5$) like 2002cx and 2005hk accounting for only $0.9_{-0.5}^{+1.1}\%$ of the Ia rate (a 2$\sigma$ upper limit of approximately 3\%). We favour the hybrid CONe WD + He star progenitor channel involving a failed deflagration of a near Chandrasekhar mass white dwarf, expected to leave a bound remnant and a surviving secondary companion, as a candidate explanation for faint Iax explosions. This scenario requires short delay times, consistent with the observed environments of SNe Iax. Furthermore, binary population synthesis calculations have suggested rates of $1-18\%$ of the SN Ia rate for this channel, consistent with our rate estimates.

arXiv commentAccepted to MNRAS after minor revision

References in corpus (112)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Astropy: A Community Python Package for Astronomy
• The chemical composition of the Sun
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• The Zwicky Transient Facility: System Overview, Performance, and First Results
• The Swift Ultra-Violet/Optical Telescope
• [O III]/[N II] as an Abundance Indicator at High Redshift
• ATLAS: A High-Cadence All-Sky Survey System
• The Pan-STARRS1 Photometric System
• Photometric Calibration of the Swift Ultraviolet/Optical Telescope
• Observational clues to the progenitors of Type-Ia supernovae
• Nearby Supernova Rates from the Lick Observatory Supernova Search. II. The Observed Luminosity Functions and Fractions of Supernovae in a Complete Sample
• WISeREP - An Interactive Supernova Data Repository
• The Absolute Luminosities of the Calan/Tololo Type Ia Supernovae
• Determining the Type, Redshift, and Age of a Supernova Spectrum
• Cosmicflows-3
• Type Iax Supernovae: A New Class of Stellar Explosion
• SN 2002cx: The Most Peculiar Known Type Ia Supernova
• PESSTO : survey description and products from the first data release by the Public ESO Spectroscopic Survey of Transient Objects
• Design and operation of the ATLAS Transient Science Server
• Three-dimensional pure deflagration models with nucleosynthesis and synthetic observables for Type Ia supernovae
• The Carnegie Supernova Project: Second Photometry Data Release of Low-Redshift Type Ia Supernovae
• Chemical abundances in high-redshift galaxies: A powerful new emission line diagnostic
• The Zwicky Transient Facility Bright Transient Survey. II. A Public Statistical Sample for Exploring Supernova Demographics
• SOUSA: the Swift Optical/Ultraviolet Supernova Archive
• Three Hypervelocity White Dwarfs in Gaia DR2: Evidence for Dynamically Driven Double-Degenerate Double-Detonation Type Ia Supernovae
• The Broad-lined Type Ic SN 2003jd
• Gemini Spectroscopy of Supernovae from SNLS: Improving High Redshift SN Selection and Classification
• The Peculiar SN 2005hk: Do Some Type Ia Supernovae Explode as Deflagrations?
• SN 2008ha: An Extremely Low Luminosity and Extremely Low Energy Supernova
• 3D deflagration simulations leaving bound remnants: a model for 2002cx-like Type Ia supernovae
• Time-dependent 3D spectrum synthesis for type Ia supernovae
• The Carnegie Supernova Project I: Third Photometry Data Release of Low-Redshift Type Ia Supernovae and Other White Dwarf Explosions
• Ultraviolet Light Curves of Supernovae with Swift Uvot
• The Progenitors of Type Ia Supernovae
• On the Progenitors of Type Ia Supernovae
• A low energy core-collapse supernova without a hydrogen envelope
• A spectral synthesis code for rapid modelling of supernovae
• An Updated Ultraviolet Calibration for the Swift/UVOT
• Late-Time Spectroscopy of SN 2002cx: The Prototype of a New Subclass of Type Ia Supernovae
• Failed-Detonation Supernovae: Sub-Luminous Low-Velocity Ia Supernovae and Their Kicked Remnant White Dwarfs with Iron-Rich Cores
• A luminous, blue progenitor system for a type-Iax supernova
• The Pan-STARRS Data Processing System
• Pan-STARRS Pixel Processing: Detrending, Warping, Stacking
• Spectroscopy of Type Ia Supernovae by the Carnegie Supernova Project
• The Extremes of Thermonuclear Supernovae
• From Spitzer Galaxy Photometry to Tully-Fisher Distances
• ESC Supernova spectroscopy of non-ESC targets
• LOSS Revisited - II: The relative rates of different types of supernovae vary between low- and high-mass galaxies
• Deflagrations in hybrid CONe white dwarfs: a route to explain the faint Type Iax supernova 2008ha
• The ejected mass distribution of type Ia supernovae: A significant rate of non-Chandrasekhar-mass progenitors
• A Study of Carbon Features in Type Ia Supernova Spectra
• Pan-STARRS Pixel Analysis : Source Detection and Characterization
• Comprehensive Observations of the Bright and Energetic Type Iax SN 2012Z: Interpretation as a Chandrasekhar Mass White Dwarf Explosion
• The Zwicky Transient Facility Census of the Local Universe I: Systematic search for Calcium rich gap transients reveal three related spectroscopic sub-classes
• On the nature of Hydrogen-rich Superluminous Supernovae
• The evolution of the peculiar Type Ia supernova SN 2005hk over 400 days
• Spectropolarimetry of the Peculiar Type Ia SN 2005hk
• An unusual white dwarf star may be a surviving remnant of a subluminous Type Ia supernova
• Multi-dimensional simulations of radiative transfer in Type Ia supernovae
• The C-flame Quenching by Convective Boundary Mixing in Super-AGB Stars and the Formation of Hybrid C/O/Ne White Dwarfs and SN Progenitors
• Unburned Material in the Ejecta of Type Ia Supernovae
• Exploring the spectroscopic diversity of Type Ia Supernovae
• Nuclear Dominated Accretion Flows in Two Dimensions. I. Torus Evolution with Parametric Microphysics
• Optical and Near-IR Observations of the Faint and Fast 2008ha-like Supernova 2010ae
• Possible Detection of the Stellar Donor or Remnant for the Type Iax Supernova 2008ha
• The type Iax supernova, SN 2015H: a white dwarf deflagration candidate
• Type Iax Supernovae
• Late-time Spectroscopy of Type Iax Supernovae
• The Subluminous Supernova 2007qd: A Missing Link in a Family of Low-Luminosity Type Ia Supernovae
• Hubble Space Telescope and Ground-Based Observations of the Type Iax Supernovae SN 2005hk and SN 2008A
• The volumetric rate of normal type Ia supernovae in the local universe discovered by the Palomar Transient Factory
• Wait for it: Post-supernova winds driven by delayed radioactive decays
• Supernova Remnants in the Local Group I: A model for the radio luminosity function and visibility times of supernova remnants
• Remnants of Subdwarf Helium Donor Stars Ejected from Close Binaries with Thermonuclear Supernovae
• Displaying the Heterogeneity of the SN 2002cx-like Subclass of Type Ia Supernovae with Observations of the Pan-STARRS-1 Discovered SN2009ku
• Investigating the diversity of supernovae type Iax: A MUSE and NOT spectroscopic study of their environments
• Double-Degenerate Carbon-Oxygen and Oxygen-Neon White Dwarf Mergers: A New Mechanism for Faint and Rapid Type Ia Supernovae
• Abundance stratification in Type Ia Supernovae - IV: the luminous, peculiar SN 1991T
• DASH: Deep Learning for the Automated Spectral Classification of Supernovae and their Hosts
• Probing type Ia supernova properties using bolometric light curves from the Carnegie Supernova Project and the CfA Supernova Group
• Transients from ONe White-Dwarf - Neutron-Star/Black-Hole Mergers
• The birth rate of SNe Ia from hybrid CONe white dwarfs
• The hybrid CONe WD + He star scenario for the progenitors of type Ia supernovae
• Anatomy of the hyper-runaway star LP 40-365 with Gaia
• Optical and near infrared observations of SN 2014ck: an outlier among the Type Iax supernovae
• Explosion of white dwarfs harboring hybrid CONe cores
• Constraints on single-degenerate Chandrasekhar mass progenitors of Type Iax supernovae
• SN2018kzr: a rapidly declining transient from the destruction of a white dwarf
• Still Brighter than Pre-Explosion, SN 2012Z Did Not Disappear: Comparing Hubble Space Telescope Observations a Decade Apart
• Abundance Tomography of Type Iax SN 2011ay with TARDIS
• The lowest of the low: discovery of SN 2019gsc and the nature of faint Iax supernovae
• Supernovae and their host galaxies -- VII. The diversity of Type Ia supernova progenitors
• The early phases of the type Iax supernova SN 2011ay
• Growing evidence that SNe Iax are not a one-parameter family: the case of PS1-12bwh
• AT2018kzr: the merger of an oxygen-neon white dwarf and a neutron star or black hole
• SN 2019muj -- a well-observed Type Iax supernova that bridges the luminosity gap of the class
• Chemical abundances in Sgr A East: evidence for a Type Iax supernova remnant
• The long-term evolution and appearance of Type Iax postgenitor stars
• Type Iax SNe as a few-parameter family
• Detection of Circumstellar Helium in Type Iax Progenitor Systems
• Identification of the feature that causes the I-band secondary maximum of a type Ia supernova
• The interaction of Type Iax supernova ejecta with a helium companion star
• Detecting the signatures of helium in type Iax supernovae
• Extended Optical/NIR Observations of Type Iax Supernova 2014dt: Possible Signatures of a Bound Remnant
• Observations of the low-luminosity Type Iax supernova 2019gsc: a fainter clone of SN 2008ha?
• Intermediate Luminosity Type Iax SN 2019muj With Narrow Absorption Lines: Long-Lasting Radiation Associated With a Possible Bound Remnant Predicted by the Weak Deflagration Model
• Exploring the optical behaviour of a type Iax supernova SN 2014dt
• Constraining Type Iax Supernova Progenitor Systems with Stellar Population Aging
• A hyper-runaway white dwarf in Gaia DR2 as a Type Iax supernova primary remnant candidate

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