| タイトル | Characterization of Three Carbon- and Nitrogen-Rich Particles from Comet 81P/WILD |
| 本文（外部サイト） | http://hdl.handle.net/2060/20070006747 |
| 著者（英） | Herzog, G. F.; Taylor, S.; Keller, L. P.; Daghlian, C. P.; Gallien, J.-P.; Koepsell, E.; Sutton, S. R.; Flynn, G. J.; Sitnitsky, I.; Khodja, H.; Lanzirotti, A. |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 2007-01-01 |
| 言語 | eng |
| 内容記述 | Comets may sample the early solar system s complement of volatile-forming elements - including C and N - more fully and reliably than do the terrestrial planets or asteroids. Until recently, all elemental analyses of unambiguously cometary material were carried out remotely. The return of the Stardust mission makes it possible to analyze documented material from P81/Wild 2 in the laboratory Wild 2 particles fragmented when they stopped in the aerogel collectors. We have studied three fragments thought to be rich in C and N by using several techniques: FTIR to characterize organic matter; synchrotron-induced x-ray fluorescence (SXRF) to determine Fe and certain element/Fe ratios; SEM to image sample morphology and to detect semiquantitatively Mg, Al, Si, Ca, and Fe; and nuclear reaction analysis (NRA) to measure C, N, O, and Si. |
| NASA分類 | Astrophysics |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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