Expectations for Infrared Spectroscopy of 9P/Tempel 1 from Deep Impact |
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| Authors: | Jessica M. Sunshine Michael F. A’Hearn Olivier Groussin Lucy A. McFadden Kenneth P. Klaasen Peter H. Schultz Carey M. Lisse |
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| Affiliation: | (1) Science Applications International Corporation, Chantilly, VA, U.S.A.;(2) Department of Astronomy, University of Maryland, College Park, MD, U.S.A.;(3) Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, U.S.A.;(4) Department of Geological Sciences, Brown University, Providence, RI, U.S.A. |
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| Abstract: | The science payload on the Deep Impact mission includes a 1.05–4.8 μm infrared spectrometer with a spectral resolution ranging from R∼200–900. The Deep Impact IR spectrometer was designed to optimize, within engineering and cost constraints, observations of the dust, gas, and nucleus of 9P/Tempel 1. The wavelength range includes absorption and emission features from ices, silicates, organics, and many gases that are known to be, or anticipated to be, present on comets. The expected data will provide measurements at previously unseen spatial resolution before, during, and after our cratering experiment at the comet 9P/Tempel 1. This article explores the unique aspects of the Deep Impact IR spectrometer experiment, presents a range of expectations for spectral data of 9P/Tempel 1, and summarizes the specific science objectives at each phase of the mission. |
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| Keywords: | coma comets Deep Impact infrared spectroscopy nucleus Tempel 1 |
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