| タイトル | Palomar and Table Mountain Observations of 9P/Tempel 1 during the Deep Impact Encounter: First Results |
| 著者（英） | Hanner, Martha S.; Lisse, Carey M.; Dekany, Richard; Troy, Mitchell; Weissman, Paul R.; Buratti, Bonnie J.; Choi, Young-Jun; Bauer, James M.; Young, James W. |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech. |
| 発行日 | 2007-01-16 |
| 言語 | eng |
| 内容記述 | We present the first results of the Palomar Adaptive Optics observations taken during the Deep Impact encounter with 9P/Tempel 1 in July 2005. We have combined the Palomar near-IR imaging data with our visual wavelength images obtained simultaneously at JPL's Table Mountain Observatory to cover the total wavelength range from 0.4 to 2.3 micrometers in the B, V, R, I, J, H, and K filter bands, spanning the dates from 2005 July 03-07.We also include in our overall analysis images taken on the pre-encounter dates of June 1 and June 15, 2005. The broad wavelength range of our observations, along with high temporal resolution, near-IR sensitivity, and spatial resolution of our imaging, have enabled us to place constraints on the temperature of the impact flash and incandescent plume of greater than 700 K, and to provide mean dust velocities of order 197 +/- 16 m/s approximately 1.25 h after impact derived from our 1.64 micro observations. Our ejected dust mass estimates, as derived from our near-IR observations, are an order of magnitude less than those previously reported for visual wavelength observations. |
| NASA分類 | Optics |
| 権利 | Copyright |
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