The Supernova Legacy Survey 3-year sample: Type Ia Supernovae photometric distances and cosmological constraints

Abstract

We present photometric properties and distance measurements of 252 high redshift Type Ia supernovae (0.15 < z < 1.1) discovered during the first three years of the Supernova Legacy Survey (SNLS). These events were detected and their multi-colour light curves measured using the MegaPrime/MegaCam instrument at the Canada-France-Hawaii Telescope (CFHT), by repeatedly imaging four one-square degree fields in four bands. Follow-up spectroscopy was performed at the VLT, Gemini and Keck telescopes to confirm the nature of the supernovae and to measure their redshifts. Systematic uncertainties arising from light curve modeling are studied, making use of two techniques to derive the peak magnitude, shape and colour of the supernovae, and taking advantage of a precise calibration of the SNLS fields. A flat LambdaCDM cosmological fit to 231 SNLS high redshift Type Ia supernovae alone gives Omega_M = 0.211 +/- 0.034(stat) +/- 0.069(sys). The dominant systematic uncertainty comes from uncertainties in the photometric calibration. Systematic uncertainties from light curve fitters come next with a total contribution of +/- 0.026 on Omega_M. No clear evidence is found for a possible evolution of the slope (beta) of the colour-luminosity relation with redshift.

(The SNLS Collaboration) 40 pages, 32 figures, Accepted in A&A

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• An archival search for type Ia supernova siblings
• Recovered SN Ia rate from simulated LSST images
• A Cohesive Deep Drilling Field Strategy for LSST Cosmology
• Multicolor light curves simulations of Population III core-collapse supernovae: from shock breakout to ${}^{56}$Co decay
• See Change: VLT spectroscopy of a sample of high-redshift Type Ia supernova host galaxies
• Bootstrapping from inflationary magnetogenesis to CMB initial conditions
• Late-time dynamics of dark energy EoS in symmetric teleparallel gravity
• Unveiling the Universe with Emerging Cosmological Probes
• The Next Generation of Cosmological Measurements with Type Ia Supernovae
• Sampling the Probability Distribution of Type Ia Supernova Lightcurve Parameters in Cosmological Analysis
• Euclid preparation. XXXI. The effect of the variations in photometric passbands on photometric-redshift accuracy
• ZTF SN Ia DR2: Evidence of Changing Dust Distributions With Redshift Using Type Ia Supernovae
• Investigating the Possibility of a Turning Point in the Dark Energy Equation of State
• Sequentially guided MCMC proposals for synthetic likelihoods and correlated synthetic likelihoods
• SNIa detection in the SNLS photometric analysis using Morphological Component Analysis
• A proposal to improve the accuracy of cosmological observables and address the Hubble tension problem
• LensWatch. II. Improved Photometry and Time-delay Constraints on the Strongly Lensed Type Ia Supernova 2022qmx ("SN Zwicky") with HST Template Observations
• Decay of dark energy into dark matter in a metric $f(R)$ gravity: effective running Hubble constant
• Forecasting Supernova Observations with the CSST: I. Photometric Samples
• Stellar Populations in type Ia supernova host galaxies at intermediate-high redshift: Star formation and metallicity enrichment histories
• Comparing the light curves of simulated Type Ia Supernovae with observations using data-driven models
• Dependences of Type Ia Supernovae Lightcurve Parameters on the Host Galaxy Star Formation Rate and Metallicity
• Weak lensing magnification of Type Ia Supernovae from the Pantheon sample
• Search For Type Ia Supernova NUV-Optical Subclasses
• Hawai'i Supernova Flows: A Peculiar Velocity Survey Using Over a Thousand Supernovae in the Near-Infrared
• Early-time spectroscopic modelling of the transitional Type Ia Supernova 2021rhu with TARDIS
• Linear dark energy equation of state revealed by supernovae?
• Cosmological model with Gong-Zong Parametrization in $f(R,L_m)$ gravity
• BayeSN and SALT: A Comparison of Dust Inference Across SN Ia Light-curve Models with DES5YR
• [O II] as an Effective Indicator of the Dependence Between the Standardised Luminosities of Type Ia Supernovae and the Properties of their Host Galaxies
• Revisiting metric perturbations in tensor-vector-scalar theory
• Observational constraints on a Yang-Mills condensate dark energy model
• Propagating Uncertainties in the SALT3 Model Training Process to Cosmological Constraints
• MUSUBI (MegaCam Ultra-deep Survey: $u^{\ast }$-Band Imaging)-Data for the COSMOS and SXDS Fields
• Testing and Combining Transient Spectral Classification Tools on 4MOST-like Blended Spectra
• Assessing differences between local galaxy dust attenuation and point source extinction within the same environments
• The DEHVILS in the Details: Type Ia Supernova Hubble Residual Comparisons and Mass Step Analysis in the Near-Infrared
• The expansion of the universe observed with supernovae
• Forecasting Cosmological Constraints from the Weak Lensing Magnification of Type Ia Supernovae Measured by the Nancy Grace Roman Space Telescope
• Reconstructing the Cosmic Expansion History with a Monotonicity Prior
• Effect of lensing magnification on type Ia supernova cosmology
• ZTF SN Ia DR2 follow-up: Exploring the origin of the Type Ia supernova host galaxy step through Si II velocities
• Observational constraints on generic models of non-minimal curvature-matter coupling
• ZTF SN~Ia DR2: Cosmology-independent constraints on Type Ia supernova standardisation from supernova siblings
• ZTF SN Ia DR2: Exploring SN Ia properties in the vicinity of under-dense environments
• A cosmic speed-trap: a gravity-independent test of cosmic acceleration using baryon acoustic oscillations
• ZTF SN Ia DR2: Improved SN Ia colors through expanded dimensionality with SALT3+
• Two c's in a pod: Cosmology independent measurement of the Type Ia supernova colour-luminosity relation with a sibling pair
• The Self-Calibrating Hubble Diagram
• Exploring the origins of high-velocity features in SNe Ia with the spectral synthesis code TARDIS
• Observations of General Relativity at strong and weak limits
• SN 2017fgc: A Fast-Expanding Type Ia Supernova Exploded in Massive Shell Galaxy NGC 474
• Probing Systematic Bias in Low-Redshift Type Ia Supernova Measurements by Cross Analyzing Surface Brightness and Hubble Residuals
• Irreversible Thermodynamics of the Universe: Constraints from Planck Data
• Addressing type Ia supernova color variability with a linear spectral template
• Compact Objects in 4D Einstein Gauss Bonnet Gravity A Data Based Perspective
• The Dark Energy Survey Supernova Program results: Type Ia Supernova brightness correlates with host galaxy dust
• FlowSN: Neural Simulation-Based Inference under Realistic Selection Effects applied to Supernova Cosmology
• iPTF16geu through the lens of thermonuclear explosion models
• Dependence of low redshift Type Ia Supernovae luminosities on host galaxies
• Testing the effect of progenitor's metallicity on ${}^{56}$Ni mass and constraining the progenitor scenarios in Type Ia supernovae
• DeepZipper II: Searching for Lensed Supernovae in Dark Energy Survey Data with Deep Learning
• SN 2021pfs: A Type Ia Supernova Likely Affected by Progenitor Metallicity, as Revealed by Comparison with Its Twin Counterpart
• PISCOLA: a data-driven transient light-curve fitter
• Redshift Evolution of the HII Galaxy $L$-$\sigma$ Relation: Gaussian Process Analysis and Cosmological Implications
• The influence of environmental effects on Type Ia Supernovae Standardization
• A DESGW Search for the Electromagnetic Counterpart to the LIGO/Virgo Gravitational Wave Binary Neutron Star Merger Candidate S190510g
• Type Ia supernova Hubble diagrams with host galaxy photometric redshifts
• Gamma-Ray Bursts, Supernovae Ia and Baryon Acoustic Oscillations: a binned cosmological analysis
• Training Custom Light Curve Models of SN Ia Sub-Populations Selected According to Host Galaxy Properties
• Friedmann-free limits on spatial curvature