ZTF SN Ia DR2: Impact of the galaxy cluster environment on the stretch distribution of Type Ia supernovae

Abstract

Understanding the impact of the astrophysical environment on Type Ia supernova (SN Ia) properties is crucial to minimize systematic uncertainties in cosmological analyses based on this probe. We investigate the dependence of the SN Ia SALT2.4 light-curve stretch on the distance from their nearest galaxy cluster to study a potential effect of the intracluster medium (ICM) environment on SN Ia intrinsic properties. We use the largest SN Ia sample to date and cross-match it with existing X-ray, Sunyaev-Zel'dovich, and optical cluster catalogs in order to study the dependence between stretch and distance to the nearest detected cluster from each SN Ia. We model the underlying stretch distribution with a Gaussian mixture with relative amplitudes that depend on redshift and cluster-centric distance. We find a significant improvement of the fit quality of the stretch distribution if we include the distance-dependant term in the model with a variation of the Akaike information criterion $\mathrm{\Delta AIC}=-10.2$. Because of the known correlation between galaxy age and distance from cluster center, this supports previous evidence that the age of the stellar population is the underlying driver of the bimodial shape of the SN Ia stretch distribution. We further compute the evolution of the fraction of quenched galaxies as a function of distance with respect to cluster center from our best-fit model of the SNe Ia stretch distribution and compare it to previous results obtained from $H\alpha$ line measurements, optical broadband photometry, and simulations. We find our estimate to be compatible with these results. The results of this work indicate that SNe Ia searches at high redshift targeted towards clusters to maximize detection probability should be considered with caution as the stretch distribution of the detected sample would be strongly biased towards the old sub-population of SNe Ia.

Accepted in Astronomy & Astrophysics

References in corpus (42)

• The Zwicky Transient Facility: System Overview, Performance, and First Results
• In the Realm of the Hubble tension $-$ a Review of Solutions
• The Pantheon+ Analysis: Cosmological Constraints
• The Zwicky Transient Facility: Data Processing, Products, and Archive
• The Zwicky Transient Facility: Science Objectives
• Improved Distances to Type Ia Supernovae with Multicolor Light Curve Shapes: MLCS2k2
• Galaxy Clusters Discovered via the Sunyaev-Zel'dovich Effect in the 2500-square-degree SPT-SZ survey
• Rates and properties of type Ia supernovae as a function of mass and star-formation in their host galaxies
• The Zwicky Transient Facility: Surveys and Scheduler
• The Zwicky Transient Facility: Observing System
• The Atacama Cosmology Telescope: A Catalog of > 4000 Sunyaev-Zel'dovich Galaxy Clusters
• The Zwicky Transient Facility Bright Transient Survey. II. A Public Statistical Sample for Exploring Supernova Demographics
• The SPTpol Extended Cluster Survey
• The Evolution of Galaxy Number Density at z < 8 and its Implications
• It's Dust: Solving the Mysteries of the Intrinsic Scatter and Host-Galaxy Dependence of Standardized Type Ia Supernova Brightnesses
• Quenched fractions in the IllustrisTNG simulations: the roles of AGN feedback, environment, and pre-processing
• The Pantheon+ Analysis: SuperCal-Fragilistic Cross Calibration, Retrained SALT2 Light Curve Model, and Calibration Systematic Uncertainty
• Calibration of the optical mass proxy for clusters of galaxies and an update of the WHL12 cluster catalog
• A Fully Automated Integral Field Spectrograph Pipeline for the SEDMachine: pysedm
• Ages of Type Ia Supernovae Over Cosmic Time
• First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: The Effect of Host Galaxy Properties on Supernova Luminosity
• Physical properties of SDSS satellite galaxies in projected phase-space
• The Metallicity of the Intracluster Medium Over Cosmic Time: Further Evidence for Early Enrichment
• Redshift evolution of the underlying type Ia supernova stretch distribution
• Galaxy formation with L-GALAXIES: Modelling the environmental dependency of galaxy evolution and comparing with observations
• New Modules for the SEDMachine to Remove Contaminations from Cosmic Rays and Non-target Light: BYECR and CONTSEP
• Detecting clusters of galaxies and active galactic nuclei in an eROSITA all-sky survey digital twin
• The Rarity of Star Formation in Brightest Cluster Galaxies as Measured by WISE
• Accuracy of environmental tracers and consequence for determining the Type Ia Supernovae magnitude step
• Concerning Colour: The Effect of Environment on Type Ia Supernova Colour in the Dark Energy Survey
• The Richness-to-Mass Relation of CAMIRA Galaxy Clusters from Weak-lensing Magnification in the Subaru Hyper Suprime-Cam Survey
• A galaxy-driven model of type Ia supernova luminosity variations
• Shock and Splash: Gas and Dark Matter Halo Boundaries around LambdaCDM Galaxy Clusters
• ZTF SN Ia DR2: Colour standardisation of Type Ia Supernovae and its dependence on environment
• Growth-rate measurement with type-Ia supernovae using ZTF survey simulations
• The HST See Change Program: I. Survey Design, Pipeline, and Supernova Discoveries
• Environmental Dependence of Type Ia Supernovae in Low-Redshift Galaxy Clusters
• Populations of Neutron Star Ultraluminous X-ray Sources: Mind your b's and B's
• A Synthetic Roman Space Telescope High-Latitude Time-Domain Survey: Supernovae in the Deep Field
• Dust in Clusters of Galaxies
• Galaxy clusters and their outskirts: the "red sequence", star formation rate, stellar mass
• ZF-UDS-7329: A relic galaxy in the early Universe

Cited by in corpus (2)

• ZTF SN Ia DR2: Environmental dependencies of stretch and luminosity of a volume limited sample of 1,000 Type Ia Supernovae
• ZTF SN Ia DR2: Exploring SN Ia properties in the vicinity of under-dense environments