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26 April 2024

» arxiv » astro-ph/0609706

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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 Foley ; Claes Fransson ; Christopher L. Gerardy ; Peter A. Hoeflich ; Peter Lundqvist ; Seppo Mattila ; Jesper Sollerman ; J. Craig Wheeler ;
Date:	26 Sep 2006
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.
Source:	arXiv, astro-ph/0609706
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