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

2006/09/26 by Rubina Kotak, Peter Meikle, Monica Pozzo +12 · 1 citation
Physics and Astronomy · #astro-ph

paper · pdf · doi:10.1086/509655

published as Astrophys.J.651:L117-L120,2006 · ApJ Letters (accepted)

arxiv created 2006/09/26 · arxiv updated 2009/12/01

Abstract

We present results based on Spitzer Space Telescope mid-infrared (3.6-30 micron) observations of the nearby 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 which, via spectral synthesis, may be used to constrain nucleosynthesis models.

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• Two Decades of Dust Evolution in SN 2005af through JWST, Spitzer, and Chemical Modeling