Active galactic nuclei are not responsible for systematics in the empirical properties of type Ia supernovae

Abstract

Despite being key cosmological anchors, the empirical properties of Type Ia supernovae (SNe Ia) remain subject to significant systematic uncertainties, the largest of which being their astrophysics and how this is linked to their environment. The relative importance of these uncertainties will grow as larger observational samples reduce statistical uncertainties. Here I explore if the presence of an active galactic nucleus (AGN) within a portion of SN Ia host galaxies could be one such systematic uncertainty. With the ZTF SNe Ia DR2 sample I find that, in the low redshift regime (z < 0.15), the presence of AGNs in some SN Ia hosts does not produce a significant systematic effect on their measured Hubble residuals.

Published in RNAAS - This is an author compiled version. 3 Pages, 1 Figure

References in corpus (17)

• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package
• Observational Evidence of AGN Feedback
• Mid-Infrared Selection of AGN with the Wide-Field Infrared Survey Explorer. I. Characterizing WISE-Selected AGN in COSMOS
• Initial Performance of the NEOWISE Reactivation Mission
• The Dependence of Type Ia Supernova Luminosities on their Host Galaxies
• Mid-Infrared Selection of Active Galactic Nuclei with the Wide-Field Infrared Survey Explorer. II. Properties of WISE-Selected Active Galactic Nuclei in the NDWFS Boötes Field
• Using the Bright Ultra-Hard XMM-Newton Survey to define an IR selection of luminous AGN based on WISE colours
• Strong Dependence of Type Ia Supernova Standardization on the Local Specific Star Formation Rate
• The search for active black holes in nearby low-mass galaxies using optical and mid-IR data
• The Million Quasars (Milliquas) Catalogue, v8
• Dependence of Type Ia supernova luminosities on their local environment
• Concerning Colour: The Effect of Environment on Type Ia Supernova Colour in the Dark Energy Survey
• The SPHEREx Satellite Mission
• Long-term follow-up observations of extreme coronal line emitting galaxies
• ZTF SN Ia DR2: Environmental dependencies of stretch and luminosity of a volume limited sample of 1,000 Type Ia Supernovae
• TiDES: The 4MOST Time Domain Extragalactic Survey