| タイトル | 279 - Xanes Studies on UV-Irradiated Interstellar Ice Analogs: A Comparison to STARDUST Samples |
| 著者（英） | Milam, Stefanie N.; DeGregorio, Bradley T.; Sandford, Scott A.; Kilcoyne, A. L. David; Cody, George D.; Nuevo, Michel; Stroud, Rhonda M. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2010-03-20 |
| 言語 | eng |
| 内容記述 | We present C-, N-, and O-XANES (X-ray Absorption Near-Edge Spectroscopy) results of organic residues produced in the laboratory from the UV irradiation of astrophysical ice analogs containing H20, CO, CH30H, NH31 in order to mimic processes that may occur in cold icy bodies of the outer Solar System, particularly in comets, Such analyses showed that laboratory-formed organic residues mainly consist of a solid phase and an oily phase. C-XANES analysis of the solid phase suggests a rich distribution of organic functionalities, among which carbonyl groups, C=C bonds, and alcohols are present. Results from N-XANES indicate the possible presence of amide, amine, and nitrile groups, The O-XANES spectra confirmed the a-bearing groups, These results are compared with the XANES spectra obtained from STARDUST cometary samples, |
| NASA分類 | Lunar and Planetary Science and Exploration |
| 権利 | Copyright |
|
