Gas and Dust Imaging of the Inner Coma of 9P/Tempel 1 Before and After Impact

Details Gas and Dust Imaging of the Inner Coma of 9P/Tempel 1 Before and After Impact Gas and Dust Imaging of the Inner Coma of 9P/Tempel 1 Before and After Impact

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006dps....38.1704m&link_type=abstract

American Astronomical Society, DPS meeting #38, #17.04; Bulletin of the American Astronomical Society, Vol. 38, p.512

Astronomy and Astrophysics

Astronomy

2

Scientific paper

The instrument platform on the Deep Impact spacecraft carried a medium resolution imager with a total of 9 filters. Five were designed for study of coma gases OH (309 nm), CN (387nm) and C2 (514nm) with two near-by continuum filters at 345 nm and 526 nm. The inner coma is characterized with respect to gas and dust and compared with pre- impact images and IR spectra to determine the location and character of active regions on the nucleus. Five hours prior to impact, long exposures were acquired with SNR of 30-50 and spatial scale of 2 km/pixel. Signal extends to 400 km. OH shows an asymmetric enhancement in the first 100 km that decreases at a rate

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