From: LARRY KLAES (ljk4_at_msn.com)
Date: Fri Sep 30 2005 - 16:17:50 UTC
Paper: astro-ph/0509850
Date: Wed, 28 Sep 2005 16:24:38 GMT (62kb)
Title: SWAS observations of comet 9P/Tempel 1 and Deep Impact
Authors: Frank Bensch, Gary J. Melnick, David A. Neufeld, Martin Harwit,
Ronald L. Snell, Brian M. Patten
Categories: astro-ph
Comments: to appear in the proceedings of the IAU Symposium No. 231:
"Astrochemistry - Recent Successes and Current Callenges"
On 4 July 2005 at 1:52 UT the Deep Impact mission successfully completed its
goal to hit the nucleus of 9P/Tempel 1 with an impactor, forming a crater on
the nucleus and ejecting material into the coma of the comet.
The 370 kg impactor collided with the sunlit side of the nucleus with a
relative velocity of 10.2 km/s. NASA's Submillimeter Wave Astronomy
Satellite (SWAS) observed the 1(10)-1(01) ortho-water ground-state
rotational transition in comet 9P/Tempel 1 before, during, and after the
impact.
No excess emission from the impact was detected by SWAS. However, the water
production rate of the comet showed large natural variations of more than a
factor of three during the weeks before the impact.
\\ ( http://arXiv.org/abs/astro-ph/0509850 , 62kb)
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