|
Search | Add a publication |
| ID No : | 792 Edit | Title: | Comparison of the Organic Composition of Cometary Samples with Residues Formed from the UV Irradiation of Astrophysical Ice Analogs |
| Summary / Review : | "The NASA Stardust mission successfully collected material from Comet 81P/Wild 2 [1], including authentic cometary grains [2]. X-ray absorption near-edge structure (XANES) spectroscopy analysis of these samples indicates the presence of oxygen-rich and nitrogen-rich organic materials, which contain a broad variety of functional groups (carbonyls, C=C bonds, aliphatic chains, amines, arnides, etc.) [3]. One component of these organics appears to contain very little aromatic carbon and bears some similarity to the organic residues produced by the irradiation of ices of interstellar/cometary composition, Stardust samples were also recently shown to contain glycine, the smallest biological amino acid [4]. Organic residues produced froth the UV irradiation of astrophysical ice analogs are already known to contain a large suite of organic molecules including amino acids [5-7], amphiphilic compounds (fatty acids) [8], and other complex species. This work presents a comparison between XANES spectra measured from organic residues formed in the laboratory with similar data of cometary samples collected by the Stardust mission" (Author's abstract) |
| Author(s) : |
Milam, S. N.; Nuevo, M.; Sandford, S. A.; Cody, G. D.; Kilcoyne, A. L. D.; Stroud, R. M.; DeGregorio, B. T., [Ames Research Center; Goddard Space Flight Center] |
| Publication Date: | 2010 |
| Category(s) : |
Exploration and resources / Comet / Geology and resources |
| Web URL : |
http://hdl.handle.net/2060/20100031212
If this link is broken, please Add Comment below. We try to keep author contact details, and a backup copy in our offline library. |
| PERMANENT code(s) : | L,U |
|
(Explanation of the last 3 rows above) |
In the row above, there are up to 4 possibilities: U = URL you can click on to get a copy instantly from another source on the internet, or request it from that source D = Downloadable from PERMANENT (such as because no other URL known...) L = LAN copy, PERMANENT has a digital copy but not downloadable from our website P = Paper copy in the PERMANENT office Typically, only 0 to 3 methods are available. |
| NTRS : | 20100031212 |
| Submitted by : | MEP |
| Comments: |
Please add your thoughtful Comments to this paper after reading it. All comments are reviewed and approved before being posted publicly below. If you wish to submit a private comment to the curator, instead of a public comment, just write "Private" at the start of your comment. Corrections and suggested additions to our records are appreciated. |
Add Comment |