Infrared Spectroscopy of SN 1987A

Details Infrared Spectroscopy of SN 1987A Infrared Spectroscopy of SN 1987A

Jun 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20080p&link_type=abstract

Spitzer Proposal ID #20080

Physics

Scientific paper

We propose to conduct deep spectroscopic observations of SN 1987A with the IRS instrument on the Spitzer Space Telescope. Supernova 1987A in the Large Magellanic Cloud was the brightest and nearest supernova in almost 400 years and has been intensely scrutinized with both ground and space-based observatories (for a review see Arnett et al. 1989; Sugerman et al. 2005). Since its outburst the remnant has faded significantly and no infrared spectroscopy (with the exception of our Spitzer GTO observations), and only limited IR photometry has been possible since day 2000 (Bouchet et al. 2004; Wooden et al. 1993; Dwek et al. 1992). We will focus our study on determining the dust mass and mineralogy as well as the physical state and composition of the circumstellar material and the ejecta. These observations will provide insight into the abundances of heavy elements in Type II SN ejecta and the relative importance of SN for the production of dust. The spectral evolution of the SN 1987A was studied until 1990, when it became too faint for all IR instrumentation. Our observations will be an important contribution to nearly 20 years of temporal monitoring of this object.

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