Spitzer measurements of atomic and molecular abundances in the type IIP SN 2005af

Rubina Kotak, Peter Meikle, Monica Pozzo, Schuyler D. Van Dyk, Duncan Farrah, Robert Fesen, Alexei V. Filippenko, Ryan J. Foley, Claes Fransson, Christopher L. Gerardy, Peter A. Höflich, Peter Lundqvist, Seppo Mattila, Jesper Sollerman, J. Craig Wheeler

Research output: Contribution to journalArticlepeer-review


We present results based on mid-infrared (3.6-30 μm) observations with the Spitzer Space Telescope of the nearby Type IIP supernova 2005af. We report the first ever detection of the SiO molecule in a Type IIP supernova. Together with the detection of the CO fundamental, this is an exciting finding as it may signal the onset of dust condensation in the ejecta. From a wealth of fine-structure lines we provide abundance estimates for stable Ni, Ar, and Ne that, via spectral synthesis, may be used to constrain nucleosynthesis models.

Original languageEnglish (US)
Pages (from-to)L117-L120
JournalAstrophysical Journal
Issue number2 II
StatePublished - Nov 10 2006
Externally publishedYes


  • Supernovae: general
  • Supernovae: individual (SN 1987A, SN 2004dj, SN 2005af)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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