2008/04/30 by F. Förster, Francisco Forster, Kevin Schawinski
Mathematics · Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #Distribution (mathematics) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Gamma-ray bursts and supernovae #Geology #Mathematical analysis #Mathematics #Paleontology #Physics #Supernova #Type (biology) #astro-ph
paper · pdf · doi:10.1111/j.1745-3933.2008.00502.x
5 pages, 5 figures, accepted for publication in MNRAS Letters
arxiv created 2008/05/29 · openalex publication_date 2008/06/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Abstract We study the radial distribution of Type Ia supernovae (SNe Ia) in morphologically selected early-type host galaxies from the Sloan Digital Sky Survey (SDSS) and discuss its implications for the progenitor systems of SNe Ia. While new observations of early-type galaxies suggest that they contain small fractions of young stellar populations, they are also the most likely hosts for long time-delay SNe Ia. We find that there is no statistically significant difference between the radial distribution of SNe Ia and the light profile of their early-type host galaxies, which are dominated by old, metal-rich stellar populations. This confirms the commonly accepted idea that some SN Ia progenitors have time delays of the order of several Gyr.