The Impact of Metallicity on the Rate of Type Ia Supernovae

Abstract

The metallicity of a star strongly affects both its evolution and the properties of the stellar remnant that results from its demise. It is generally accepted that stars with initial masses below ~8 M_sun leave behind white dwarfs and that some sub-population of these lead to Type Ia supernovae. However, it is often tacitly assumed that metallicity has no effect on the rate of SNe Ia. We propose that a consequence of the effects of metallicity is to significantly increase the SN Ia rate in lower-metallicity galaxies, in contrast to previous expectations. This is because lower-metallicity stars leave behind higher-mass white dwarfs, which should be easier to bring to explosion. We first model SN Ia rates in relation to galaxy masses and ages alone, finding that the elevation in the rate of SNe Ia in lower-mass galaxies measured by LOSS is readily explained. However, we then see that models incorporating this effect of metallicity agree just as well. Using the same parameters to estimate the cosmic SN Ia rate, we again find good agreement with data up to z~2. We suggest that this degeneracy warrants more detailed examination of host galaxy metallicities. We discuss additional implications, including for hosts of high-z SNe Ia, the SN Ia delay time distribution, super-Chandrasekhar SNe, and cosmology.

8 pages, 3 figures; updated discussion and added references to agree with published version; conclusions unchanged

References in corpus (34)

• The Mass-Metallicity Relation at z~2
• Rates and properties of type Ia supernovae as a function of mass and star-formation in their host galaxies
• Normal Type Ia supernovae from violent mergers of white dwarf binaries
• Evolution of asymptotic giant branch stars I. Updated synthetic TP-AGB models and their basic calibration
• The Initial-Final Mass Relation: Direct Constraints at the Low Mass End
• The UV-Optical Color Magnitude Diagram II: Physical Properties and Morphological Evolution On and Off of a Star-Forming Sequence
• Accelerating Compact Object Mergers in Triple Systems with the Kozai Resonance: A Mechanism for "Prompt" Type Ia Supernovae, Gamma-Ray Bursts, and Other Exotica
• The Long-Term Evolution of Double White Dwarf Mergers
• High luminosity, slow ejecta and persistent carbon lines: SN 2009dc challenges thermonuclear explosion scenarios
• Constraining the Type Ia Supernova Progenitor: The Search for Hydrogen in Nebular Spectra
• Variable Sodium Absorption in a Low-Extinction Type Ia Supernova
• Multi-Element Abundance Measurements from Medium-Resolution Spectra. IV. Alpha Element Distributions in Milky Way Dwarf Satellite Galaxies
• Planetary nebulae as tracers of galaxy stellar populations
• Supernovae in the Subaru Deep Field: the rate and delay-time distribution of type Ia supernovae out to redshift 2
• Discovery of 90 Type Ia supernovae among 700,000 Sloan spectra: the Type-Ia supernova rate versus galaxy mass and star-formation rate at redshift ~0.1
• How the merger of two white dwarfs depends on their mass ratio: orbital stability and detonations at contact
• The Future is Now: the Formation of Single Low Mass White Dwarfs in the Solar Neighborhood
• The Stellar Ancestry of Supernovae in the Magellanic Clouds - I. the Most Recent Supernovae in the Large Magellanic Cloud
• The Extended HST Supernova Survey: The Rate of SNe Ia at z>1.4 Remains Low
• The Discovery of the Most Distant Known Type Ia Supernova at Redshift 1.914
• A New Determination of the High Redshift Type Ia Supernova Rates with the Hubble Space Telescope Advanced Camera for Surveys
• On the fraction of intermediate-mass close binaries that explode as type-Ia supernovae
• The Delay Time Distribution of Type Ia Supernovae and the Single Degenerate Model
• A Parameter-Space Study of Carbon-Oxygen White Dwarf Mergers
• Supersoft X-ray Phase of Single Degenerate Type Ia Supernova Progenitors in Early Type Galaxies
• The Internal Shear of Type Ia Supernova Progenitors During Accretion and Simmering
• Revealing Type Ia supernova physics with cosmic rates and nuclear gamma rays
• Subluminous Type Ia Supernovae at High Redshift from the Supernova Legacy Survey
• The Large-Scale Environments of Type Ia Supernovae: Evidence for a Metallicity Bias in the Rate or Luminosity of Prompt Ia Events
• Keck Observations of the Young Metal-Poor Host Galaxy of the Super-Chandrasekhar-Mass Type Ia Supernova SN 2007if
• On the Rates of Type Ia Supernovae in Dwarf and Giant Hosts with ROTSE-IIIb
• The Dwarf Starburst Host Galaxy of a Type Ia SN at z = 1.55 from CANDELS
• The effect of metallicity on the delay-time distribution of type Ia supernova
• Dependences of Type Ia Supernovae Lightcurve Parameters on the Host Galaxy Star Formation Rate and Metallicity

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• A unified explanation for the supernova rate-galaxy mass dependency based on supernovae discovered in Sloan galaxy spectra
• LOSS Revisited - I: Unraveling correlations between supernova rates and galaxy properties, as measured in a reanalysis of the Lick Observatory Supernova Search
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• The Close Binary Properties of Massive Stars in the Milky Way and Low-Metallicity Magellanic Clouds
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• The lowest of the low: discovery of SN 2019gsc and the nature of faint Iax supernovae
• Measurement of the core-collapse progenitor mass distribution of the Small Magellanic Cloud
• Supernova Rates and Luminosity Functions from ASAS-SN I: 2014--2017 Type Ia SNe and Their Subtypes
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• Comparative Analysis of SN 2012dn Optical Spectra: Days -14 to +114
• A New Chemical Evolution Model for Dwarf Spheroidal Galaxies based on Observed Long Star Formation Histories
• Black Hole Accretion Disk Diffuse Neutrino Background
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• A metallicity dependence on the occurrence of core-collapse supernovae
• Global Correlations Between the Radio Continuum, Infrared and CO Emission in Dwarf Galaxies
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• Extragalactic Gamma-ray Background from Star-forming Galaxies: Will Empirical Scalings Suffice?
• ZTF SN Ia DR2: Properties of the low-mass host galaxies of Type Ia supernovae in a volume-limited sample
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• An Exploration of Heterogeneity in Supernova Type Ia Samples
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