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Deep Impact Observations by OSIRIS Onboard the Rosetta Spacecraft

Abstract : The OSIRIS cameras (optical, spectroscopic, and infrared remote imaging system) onboard the European Space Agency's Rosetta spacecraft observed comet 9P/Tempel 1 for 17 days continuously around the time of NASA's Deep Impact mission. The cyanide-to-water production ratio was slightly enhanced in the impact cloud, compared with that of normal comet activity. Dust particles were flowing outward in the coma at >160 meters per second, accelerated by the gas. The slope of the brightness increase showed a dip about 200 seconds after the impact. Dust Afrho values before and long after the impact confirm the slight decrease of cometary activity. The dust-to-water mass ratio was much larger than 1.
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https://hal.archives-ouvertes.fr/hal-00017330
Contributor : Catherine Beaussier Connect in order to contact the contributor
Submitted on : Monday, January 23, 2006 - 9:17:11 AM
Last modification on : Monday, May 9, 2022 - 11:58:07 AM

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H.U Keller, L. Jorda, M. Küppers, P. J. Gutierrez, S. F. Hviid, et al.. Deep Impact Observations by OSIRIS Onboard the Rosetta Spacecraft. Science, American Association for the Advancement of Science (AAAS), 2005, 310, pp.281K. ⟨10.1126/science.1119020⟩. ⟨hal-00017330⟩

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