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

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

2006-09-26

arxiv.org/abs/astro-ph/0609706v1

Astrophys.J.651:L117-L120,2006

Astronomy and Astrophysics

Astrophysics

ApJ Letters (accepted)

Scientific paper

10.1086/509655

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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