36th DPS Meeting, 8-12 November 2004
Session 33 Comets: Comae
Poster II, Thursday, November 11, 2004, 4:15-7:00pm, Exhibition Hall 1A

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[33.03] A model to interpret the IR coma spectra from the Deep Impact mission

O. Groussin, M.F. A'Hearn, C.M. Lisse, J. Sunshine, D. Wellnitz, L. McFadden (Univ. of Maryland)

The Deep Impact mission will be launched at the end of the year and will impact comet 9P/Tempel 1 on July 4th, 2005. The payload includes a 1.0 to 4.8 micron infrared spectrometer, first flown to a comet since comet 1P/Halley. This instrument will collect spectra of the nucleus and coma before, during and after impact. In order to interpret the coma spectra, we have developed a spectral model, based on Crovisier and Encrenaz (1983, A&A 126, 170-182), which takes into account the emission lines of more than 14 molecules in the range 1.0-4.8 micron, the dust and nucleus continuum, and the instrument characteristics. We present here the model, its graphical interface, and some predictions for the encounter with comet 9P/Tempel 1.

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Bulletin of the American Astronomical Society, 36 #4
© 2004. The American Astronomical Soceity.