A post-mortem investigation of the Type IIb supernova 2001ig

Stuart D. Ryder*, Clair E. Murrowood, Raylee A. Stathakis

*Corresponding author for this work

Research output: Contribution to journalLetterpeer-review

52 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)L32-L36
Number of pages5
JournalMonthly Notices of the Royal Astronomical Society: Letters
Issue number1
Publication statusPublished - 1 Jun 2006
Externally publishedYes


  • Binaries: general
  • Galaxies: individual: NGC 7424
  • Stars: evolution
  • Supernovae: general
  • Supernovae: individual: SN 2001ig


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