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Formation of nucleobases from the uv photo-irradiation of pyrimidine in astrophysical ice analogs
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Dworkin, J. P. Sandford, S. A. Nuevo, M. Elsila, J. E. Milam, S. N. |
| Copyright Year | 2010 |
| Description | Astrochemistry laboratory simulations have shown that complex organic molecules including compounds of astrobiological interest can be formed under interstellarl/circumstellar conditions from the vacuum UV irradiation of astrophysical ice analogs containing H2O, CO, CO2, CH3OH, NH13, etc. Of all prebiotic compounds, the formation of amino acids under such experimental conditions has been the most extensively studied. Although the presence of amino acids in the interstellar medium (ISM) has yet to be confirmed, they have been detected in meteorites, indicating that biomolecules and/or their precursors can be formed under extraterrestrial, abiotic conditions. Nucleobases, the building blocks of DNA and RNA, as well as other 1V-heterocycles, have also been detected in meteorites, but like amino acids, they have yet to be observed in the ISM. In this work, we present an experimental study of the formation of pyrimidine-based compounds from the UV photo-irradiation of pyrimidine in ice mixtures containing H2O, NH3, and/or CH3OH at low temperature and pressure. |
| File Size | 102553 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20100031692 |
| Archival Resource Key | ark:/13960/t07x1cb34 |
| Language | English |
| Publisher Date | 2010-04-20 |
| Access Restriction | Open |
| Subject Keyword | Ammonia Ultraviolet Radiation Pyrimidines Simulation Methyl Alcohol Carbon Dioxide Amino Acids Abiogenesis Ice Interstellar Matter Low Temperature Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
