2006/03/14 by Stuart D. Ryder, Clair E. Murrowood, Raylee A. Stathakis · 3 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Cosmic Phenomena #Gamma-ray bursts and supernovae #astro-ph
paper · pdf · doi:10.1111/j.1745-3933.2006.00168.x
published as Mon.Not.Roy.Astron.Soc.Lett.369:L32-L36,2006 · 5 pages, 3 figures. Accepted for publication in MNRAS Letters. Fig. 1 resolution degraded to meet size limitations; full resolution version available from http://www.aao.gov.au/local/www/sdr/pubs/sn2001ig_gmos.ps.gz
arxiv created 2006/03/14 · openalex publication_date 2006/05/02 · arxiv updated 2011/03/10 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Abstract We present images taken with the Gemini Multi-Object Spectrograph on Gemini-South, in excellent (<0.5 arcsec) seeing, of supernova (SN) 2001ig in NGC 7424, ∼1000 d after explosion. A point source seen at the site of the SN is shown to have colours inconsistent with being an H ii region or a SN 1993J-like remnant, but can be matched to a late-B through late-F supergiant with AV < 1. We believe this object is the massive binary companion responsible for periodic modulation in mass-loss material around the Wolf–Rayet progenitor which gave rise to significant structure in the SN radio light curve.