2008/06/24 by A. Gal-Yam, F. Bufano, T. Barlow +27 · 34 citations
Engineering · Medicine · Physics and Astronomy · #CCD and CMOS Imaging Sensors #Galaxy #Gamma-ray bursts and supernovae #Homogeneity (statistics) #Optical spectra #Pair-instability supernova #Spectral line #Spectroscopy #Supernova #Type (biology) #Ultraviolet #Viral gastroenteritis research and epidemiology #astro-ph
paper · pdf · doi:10.1086/592744
published in The Astrophysical Journal 685(2), L117-L120 (IOP Publishing) · ApJL, submitted, comments welcome
arxiv created 2008/06/24 · openalex publication_date 2008/09/16 · arxiv updated 2009/12/01 · openalex created_date 2019/06/27 · openalex updated_date 2026/08/05
We present the initial results from our GALEX program designed to obtain ultraviolet (UV) spectra of nearby core-collapse supernovae (SNe). Our first target, SN 2005ay in the nearby galaxy NGC 3938, is a typical member of the SN II-P subclass. Our spectra show remarkable similarity to those of the prototypical Type II-P SN 1999em, and resemble also Swift observations of the recent Type II-P SN 2005cs. Taken together, the observations of these three events trace the UV spectral evolution of SNe II-P during the first month after explosion, as required in order to interpret optical observations of high-redshift SNe II-P, and to derive cross-filter K-corrections. While still highly preliminary, the apparent UV homogeneity of SNe II-P bodes well for the use of these events as cosmological probes at high redshift.