A search for deep impact's large particle ejecta

M. S. Kelley; W. T. Reach; C. E. Woodward

doi:10.1007/978-3-540-76959-0_15

A search for deep impact's large particle ejecta

M. S. Kelley, W. T. Reach, C. E. Woodward

Physics and Astronomy (Twin Cities)

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

Abstract

The Deep Impact encounter with the nucleus of 9P/Tempel ejected small grains (a ≲ 10 μm) into the comet's coma, evidenced by thermal emission from small dust grains at mid-infrared wavelengths (λ 10 μm) and dynamical simulations of optical images. Meteor-sized particles (a gsim; 100 μm) ejected by the impact will likely have the lowest ejection velocities and will weakly interact with solar radiation pressure. Therefore, large particles may remain near the nucleus for weeks or months after ejection by Deep Impact. We present initial highlights of our Spitzer Space Telescope/MIPS 24 μm camera program to image comet 9P/Tempel at 30, 80, 420, and 560 days after the Deep Impact encounter. The MIPS data, combined with our dynamics model, enable detection of large dust grains potentially ejected by Deep Impact.

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	125-130
Number of pages	6
DOIs	https://doi.org/10.1007/978-3-540-76959-0_15
State	Published - 2009

Publication series

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

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10.1007/978-3-540-76959-0_15

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A search for deep impact's large particle ejecta. / Kelley, M. S.; Reach, W. T.; Woodward, C. E.
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. 125-130 (ESO Astrophysics Symposia; Vol. 2009).

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

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title = "A search for deep impact's large particle ejecta",

abstract = "The Deep Impact encounter with the nucleus of 9P/Tempel ejected small grains (a ≲ 10 μm) into the comet's coma, evidenced by thermal emission from small dust grains at mid-infrared wavelengths (λ 10 μm) and dynamical simulations of optical images. Meteor-sized particles (a gsim; 100 μm) ejected by the impact will likely have the lowest ejection velocities and will weakly interact with solar radiation pressure. Therefore, large particles may remain near the nucleus for weeks or months after ejection by Deep Impact. We present initial highlights of our Spitzer Space Telescope/MIPS 24 μm camera program to image comet 9P/Tempel at 30, 80, 420, and 560 days after the Deep Impact encounter. The MIPS data, combined with our dynamics model, enable detection of large dust grains potentially ejected by Deep Impact.",

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AB - The Deep Impact encounter with the nucleus of 9P/Tempel ejected small grains (a ≲ 10 μm) into the comet's coma, evidenced by thermal emission from small dust grains at mid-infrared wavelengths (λ 10 μm) and dynamical simulations of optical images. Meteor-sized particles (a gsim; 100 μm) ejected by the impact will likely have the lowest ejection velocities and will weakly interact with solar radiation pressure. Therefore, large particles may remain near the nucleus for weeks or months after ejection by Deep Impact. We present initial highlights of our Spitzer Space Telescope/MIPS 24 μm camera program to image comet 9P/Tempel at 30, 80, 420, and 560 days after the Deep Impact encounter. The MIPS data, combined with our dynamics model, enable detection of large dust grains potentially ejected by Deep Impact.

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A search for deep impact's large particle ejecta

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