Consistent extinction model for type Ia supernovae in Cepheid-based calibration galaxies and its impact on $H_0$

Abstract

The most recent SH0ES measurement of the Hubble constant employs corrections of type Ia supernova magnitudes due to extinction in their host galaxies. These corrections are estimated using a probabilistic model which is trained on Hubble flow (z>0.03) supernovae and extrapolated to the calibration galaxies (those with observed Cepheids), despite the fact that the latter are selected based on criteria favouring disky and dust-rich systems. We show that this standard approach underestimates the brightness of reddened supernovae in the high stellar-mass ($M_{\star }>10^{10}{M}_{\odot }$) calibration galaxies. This can be traced back to the fact that for these galaxies, a low total-to-selective extinction coefficient (R_B~3) is assumed, while for the low stellar-mass analogues a more standard R_ B~4 is adopted. We propose a minimalistic modification of the extinction model in the calibration galaxies in order to alleviate this systematic effect. The modification is twofold and it involves: (i) the same, Milky Way-like distribution of R_B (with mean R_B of 4.3 -- consistent with the extinction curve used for colour corrections of the Cepheids -- and scatter 0.4) and (ii) a modified shape of the E(B-V) reddening distribution while keeping the same effective slope of the supernova peak magnitude-colour relation and the same mean E(B-V) reddening as measured for supernovae in the Hubble flow. We show that this new approach yields a significantly better fit ($\Delta BIC=-11$) to the calibration data and results in a lower value of $H_0$. Our result is $H_0=70.5\pm 1$ km/s/Mpc implying a reduction of the Hubble constant tension from $5.2\sigma$ to $2.8\sigma$.

arXiv comment18 pages, 7 figures, 3 tables; accepted for publication in MNRAS

References in corpus (64)

• emcee: The MCMC Hammer
• Correcting for the Effects of Interstellar Extinction
• The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
• Interstellar Dust Grains
• A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team
• A 2.4% Determination of the Local Value of the Hubble Constant
• In the Realm of the Hubble tension $-$ a Review of Solutions
• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• The Pantheon+ Analysis: Cosmological Constraints
• The Dependence of Star Formation History and Internal Structure on Stellar Mass for 10^5 Low-Redshift Galaxies
• Early Dark Energy Can Resolve The Hubble Tension
• The Pantheon+ Analysis: The Full Dataset and Light-Curve Release
• Observational clues to the progenitors of Type-Ia supernovae
• SALT2: using distant supernovae to improve the use of Type Ia supernovae as distance indicators
• Improved Distances to Type Ia Supernovae with Multicolor Light Curve Shapes: MLCS2k2
• The Carnegie-Chicago Hubble Program. VIII. An Independent Determination of the Hubble Constant Based on the Tip of the Red Giant Branch
• Cosmic Distances Calibrated to 1% Precision with Gaia EDR3 Parallaxes and Hubble Space Telescope Photometry of 75 Milky Way Cepheids Confirm Tension with LambdaCDM
• An Analysis of the Shapes of Interstellar Extinction Curves. V. The IR-Through-UV Curve Morphology
• Dust Attenuation Curves in the Local Universe: Demographics and New Laws for Star-forming Galaxies and High-redshift Analogs
• Measurements of the Hubble Constant: Tensions in Perspective
• Rates and properties of type Ia supernovae as a function of mass and star-formation in their host galaxies
• Hubble Residuals of Nearby Type Ia Supernovae Are Correlated with Host Galaxy Masses
• Seven hints that early-time new physics alone is not sufficient to solve the Hubble tension
• SNANA: A Public Software Package for Supernova Analysis
• Correcting Type Ia Supernova Distances for Selection Biases and Contamination in Photometrically Identified Samples
• The Optical-Infrared Extinction Curve and its Variation in the Milky Way
• The Carnegie Supernova Project: Intrinsic Colors of Type Ia Supernovae
• Evidence of Environmental Dependencies of Type Ia Supernovae from the Nearby Supernova Factory indicated by Local Hα
• Why reducing the cosmic sound horizon alone can not fully resolve the Hubble tension
• It's Dust: Solving the Mysteries of the Intrinsic Scatter and Host-Galaxy Dependence of Standardized Type Ia Supernova Brightnesses
• Low R_v from circumstellar dust around supernovae
• The Pantheon+ Analysis: SuperCal-Fragilistic Cross Calibration, Retrained SALT2 Light Curve Model, and Calibration Systematic Uncertainty
• Strong Dependence of Type Ia Supernova Standardization on the Local Specific Star Formation Rate
• Supercal: Cross-Calibration of Multiple Photometric Systems to Improve Cosmological Measurements with Type Ia Supernovae
• A new measurement of the Hubble constant using Type Ia supernovae calibrated with surface brightness fluctuations
• Extinction and the Radial Distribution of Supernova Properties in Their Parent Galaxies
• The Pantheon+ Analysis: Improving the Redshifts and Peculiar Velocities of Type Ia Supernovae Used in Cosmological Analyses
• The Pantheon+ Analysis: Evaluating Peculiar Velocity Corrections in Cosmological Analyses with Nearby Type Ia Supernovae
• First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: The Effect of Host Galaxy Properties on Supernova Luminosity
• Cosmic dissonance: new physics or systematics behind a short sound horizon?
• The colour-lightcurve shape relation of Type Ia supernovae and the reddening law
• Sensitivity of the Hubble Constant Determination to Cepheid Calibration
• On the homogeneity of SnIa absolute magnitude in the Pantheon+ sample
• The Hubble Tension Revisited: Additional Local Distance Ladder Uncertainties
• NGC 2770 - a supernova Ib factory?
• Cosmological Results from the RAISIN Survey: Using Type Ia Supernovae in the Near Infrared as a Novel Path to Measure the Dark Energy Equation of State
• Testing the Consistency of Dust Laws in SN Ia Host Galaxies: A BayeSN Examination of Foundation DR1
• Infrared Surface Brightness Fluctuation Distances for MASSIVE and Type Ia Supernova Host Galaxies
• Extinction Correction for Type Ia Supernova Rates. I. The Model
• A Revised SALT2 Surface for Fitting Type Ia Supernova Light Curves
• A New Compton-thick AGN in our Cosmic Backyard: Unveiling the Buried Nucleus in NGC 1448 with NuSTAR
• Effects of Supernova Redshift Uncertainties on the Determination of Cosmological Parameters
• An updated measurement of the Hubble constant from near-infrared observations of Type Ia supernovae
• Differential reddening in the direction of 56 Galactic globular clusters
• A BayeSN Distance Ladder: $H_0$ from a consistent modelling of Type Ia supernovae from the optical to the near infrared
• A Sample of Dust Attenuation Laws for DES Supernova Host Galaxies
• On dataset tensions and signatures of new cosmological physics
• Carnegie Supernova Project-I and -II: Measurements of $H_0$ using Cepheid, TRGB, and SBF Distance Calibration to Type Ia Supernovae
• Using Rest-Frame Optical and NIR Data from the RAISIN Survey to Explore the Redshift Evolution of Dust Laws in SN Ia Host Galaxies
• Reduced uncertainties up to 43\% on the Hubble constant and the matter density with the SNe Ia with a new statistical analysis
• Constraining R${}_V$ Variation Using Highly Reddened Type Ia Supernovae from the Pantheon+ Sample
• Non-Gaussian Likelihoods for Type Ia Supernovae Cosmology: Implications for Dark Energy and $H_0$
• Extinction, the elephant in the room that hinders optical Galactic observations
• A Whole Cosmology View of the Hubble Constant

Cited by in corpus (11)

• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Two per cent measurement of $H_0$ from Cepheids alone
• Revisiting model-independent constraints on spatial curvature and cosmic ladders calibration: updated and forecast analyses
• $H_0$ Without the Sound Horizon (or Supernovae): A 2% Measurement in DESI DR1
• Assessing differences between local galaxy dust attenuation and point source extinction within the same environments
• Stretch to stretch, dust to dust: lower-value local $H_0$ measurement from two-population modelling of type Ia supernovae
• Can cosmic rotation resolve the Hubble tension? Constraints from CMB and large-scale structure
• A Review on Resolving the Hubble Tension via Late-Universe Physics
• Missing Components in ΛCDM from DESI Y1 BAO Measurements: Insights from Redshift Remapping
• Diverse reddening distributions in sight lines to type Ia supernovae
• Systematic and Statistical Uncertainties in Cepheid PL Relations: Incorporating a Cross-Filter Random-Phase Mitigation Approach