Rotationally Resolved 8-35 Micron Spitzer Space Telescope Observations of the Nucleus of Comet 9P/Tempel 1

We have utilized the Spitzer Space Telescope ( SST ) Infrared Spectrograph (IRS) to directly observe thermal emission from the nucleus of comet 9P/Tempel 1 on UT 2004 March 25-27. We obtained 8-35 μm low-resolution ( R ~ 100) spectra and contemporaneous 16 and 22 μm photometric imaging over a 39 hr ... View More