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Accession Number N20120011864
Title Organic Synthesis via Irradiation and Warming of Ice Grains in the Solar Nebula.
Publication Date 2012
Media Count 12p
Personal Author F. J. Ciesla S. A. Sanford
Abstract Complex organic compounds, including many important to life on Earth, are commonly found in meteoritic and cometary samples, though their origins remain a mystery. We examined whether such molecules could be produced within the solar nebula by tracking the dynamical evolution of ice grains in the nebula and recording the environments they were exposed to. We found that icy grains originating in the outer disk, where temperatures were less than 30 K, experienced UV irradiation exposures and thermal warming similar to that which has been shown to produce complex organics in laboratory experiments. These results imply that organic compounds are natural byproducts of protoplanetary disk evolution and should be important ingredients in the formation of all planetary systems, including our own.
Keywords Complex compounds
Granular materials
Heating
Ice
Irradiation
Organic compounds
Photons
Protoplanetary disks
Solar nebula
Synthesis(Chemistry)
T tauri stars
Ultraviolet radiation

 
Source Agency National Aeronautics and Space Administration
NTIS Subject Category 54C - Astrophysics
99F - Physical & Theoretical Chemistry
Corporate Author National Aeronautics and Space Administration, Moffett Field, CA. Ames Research Center.
Document Type Journal article
Title Note N/A
NTIS Issue Number 1301
Contract Number N/A

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