The GALEX View of Supernova Hosts
James D. Neill (1), Mark Sullivan (2), Mark Seibert (3) ((1), California Institute of Technology, (2) University of Oxford, (3) Carnegie, Observatories)
TL;DR
This study uses GALEX UV imaging combined with optical and IR data to analyze supernova host galaxies, revealing correlations between galaxy properties and supernova types, and aiming to constrain supernova progenitors.
Contribution
It introduces a multi-wavelength approach to studying supernova hosts, integrating UV, optical, and IR data to explore galaxy evolution and supernova progenitor connections.
Findings
Supernova hosts occupy distinct regions on the galaxy UV-optical color-magnitude diagram.
Host galaxy properties correlate with supernova types.
Further data will improve understanding of supernova progenitors.
Abstract
We exploit the accumulating, high-quality, multi-wavelength imaging data of nearby supernova (SN) hosts to explore the relationship between SN production and host galaxy evolution. The Galaxy Evolution Explorer (GALEX, Martin et al., 2005) provides ultraviolet (UV) imaging in two bands, complementing data in the optical and infra-red (IR). We compare host properties, derived from spectral energy distribution (SED) fitting, with nearby, well-observed SN Ia light curve properties. We also explore where the hosts of different types of SNe fall relative to the red and blue sequences on the galaxy UV-optical color-magnitude diagram (CMD, Wyder et al., 2007). We conclude that further exploration and larger samples will provide useful results for constraining the progenitors of SNe.
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