The Astrophysical Journal
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.
Kotak, Rubina; Meikle, Peter; Pozzo, Monica; van Dyk, Schuyler D.; Farrah, Duncan; Fesen, Robert; Filippenko, Alexei V.; Foley, Ryan J.; Fransson, Claes; Gerardy, Christopher L.; Hoflich, Peter A.; Lundqvist, Peter; Mattila, Seppo; Sollerman, Jesper; and Wheeler, J. Craig, "SpitzerMeasurements of Atomic and Molecular Abundances in the Type IIP SN 2005af" (2006). Open Dartmouth: Faculty Open Access Articles. 3282.