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Published November 10, 2006 | Published
Journal Article Open

Spitzer Measurements of Atomic and Molecular Abundances in the Type IIP SN 2005af

Abstract

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.

Additional Information

© 2006 American Astronomical Society. Received 2006 August 30; accepted 2006 September 25; published 2006 October 23. This work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under NASA contract 1407. Financial support for the research is provided by NASA/Spitzer grant GO-20256. Support for this work was provided by NASA through an award issued by JPL/Caltech. R. K. and S. M. acknowledge support from an ESO fellowship and from the EURYI Awards scheme, respectively.

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August 22, 2023
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