کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1775259 | 1021188 | 2007 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Observations of Comet 9P/Tempel 1 with the Keck 1 HIRES instrument during Deep Impact
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
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چکیده انگلیسی
We report high-spectral resolution observations of Comet 9P/Tempel 1 before, during and after the impact on 4 July 2005 UT of the Deep Impact spacecraft with the comet. These observations were obtained with the HIRES instrument on Keck 1. We observed brightening of both the dust and gas, but at different rates. We report the behavior of OH, NH, CN, C3, CH, NH2 and C2 gas. From our observations, we determined a CN outflow velocity of at least 0.51 kmâsâ1. The dust color did not change substantially. To date, we see no new species in our spectra, nor do we see any evidence of prompt emission. From our observations, the interior material released by the impact looks the same as the material released from the surface by ambient cometary activity. However, further processing of the data may uncover subtle differences in the material that is released as well as the time evolution of this material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Icarus - Volume 191, Issue 2, Supplement, 2007, Pages 360-370
Journal: Icarus - Volume 191, Issue 2, Supplement, 2007, Pages 360-370
نویسندگان
Anita L. Cochran, William M. Jackson, Karen J. Meech, Micah Glaz,