Gemini-N observations of the dust excavated from comet 9P/Tempel 1 during deep impact

D. E. Harker; Chick E Woodward; D. H. Wooden

doi:10.1007/978-3-540-76959-0_13

Gemini-N observations of the dust excavated from comet 9P/Tempel 1 during deep impact

D. E. Harker, Chick E Woodward, D. H. Wooden

Physics and Astronomy (Twin Cities)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We present mid-infrared spectra of the GEMINI-N (+MICHELLE) observations of comet 9P/Tempel 1 during its encounter with Deep Impact (≈7 min cadence). Based on our modeling of the spectra, we find that the submicron sized dust grains travel away from the nucleus faster than the larger grains. Groups of grains of differing mineral composition travel at different ejection velocities. Amorphous olivine and amorphous carbon grains travel together at one speed, while amorphous pyroxene and crystalline olivine travel together at another speed. The different speed of the two mineral groups implies that Deep Impact excavated a layer of material below an amorphous carbon and amorphous olivine rich surface layer to release an amorphous pyroxene and crystalline olivine rich layer.

Original language	English (US)
Title of host publication	Deep Impact as a World Observatory Event
Subtitle of host publication	Synergies in Space, Time, and Wavelength: Proceedings of the ESO/VUB Conference
Editors	Hans Ulrich Kaufl, Christiaan Sterken
Pages	115-120
Number of pages	6
DOIs	https://doi.org/10.1007/978-3-540-76959-0_13
State	Published - Jan 1 2009

Publication series

Name	ESO Astrophysics Symposia
Volume	2009
ISSN (Print)	1431-2433
ISSN (Electronic)	1611-6143

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Harker, D. E., Woodward, C. E., & Wooden, D. H. (2009). Gemini-N observations of the dust excavated from comet 9P/Tempel 1 during deep impact. In H. U. Kaufl, & C. Sterken (Eds.), Deep Impact as a World Observatory Event: Synergies in Space, Time, and Wavelength: Proceedings of the ESO/VUB Conference (pp. 115-120). (ESO Astrophysics Symposia; Vol. 2009). https://doi.org/10.1007/978-3-540-76959-0_13

Gemini-N observations of the dust excavated from comet 9P/Tempel 1 during deep impact. / Harker, D. E.; Woodward, Chick E; Wooden, D. H.
Deep Impact as a World Observatory Event: Synergies in Space, Time, and Wavelength: Proceedings of the ESO/VUB Conference. ed. / Hans Ulrich Kaufl; Christiaan Sterken. 2009. p. 115-120 (ESO Astrophysics Symposia; Vol. 2009).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Harker, DE, Woodward, CE & Wooden, DH 2009, Gemini-N observations of the dust excavated from comet 9P/Tempel 1 during deep impact. in HU Kaufl & C Sterken (eds), Deep Impact as a World Observatory Event: Synergies in Space, Time, and Wavelength: Proceedings of the ESO/VUB Conference. ESO Astrophysics Symposia, vol. 2009, pp. 115-120. https://doi.org/10.1007/978-3-540-76959-0_13

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Gemini-N observations of the dust excavated from comet 9P/Tempel 1 during deep impact

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