Lab-based studies reveal how carbon atoms diffuse on the surface of interstellar ice grains to form complex organic compounds, crucial to reveal the chemical complexity of the universe. Uncovering the organic (carbon-based) chemistry in interstellar space is pivotal to understanding the chemistry
, Japan, report new lab-based insights into the central role of carbon atoms on interstellar ice grains in the journalSome of the most complex organic molecules in space are thought to be produced on the surface of interstellar ice gains at very low temperatures. Ice grains that are suitable for this purpose are known to be abundant throughout the universe.
Above 30 Kelvin carbon atoms diffuse and bond together to form diatomic carbon, C2. Credit: Masashi Tsuge, et al. Nature Astronomy. September 14, 2023“In our studies, recreating feasible interstellar conditions in the laboratory, we were able to detect weakly-bound carbon atoms diffusing on the surface of ice grains to react and produce Cmolecules,” says chemist Masashi Tsuge of Hokkaido University’s Institute of Low Temperature Science.
Masashi Tsuge , first and corresponding author of the paper with co-author Naoki Watanabe . Credit: Masashi TsugeTsuge says that the findings bring a previously overlooked chemical process into the frame for explaining how more complex organic molecules could be built by the steady addition of carbon atoms. He suggests these processes could occur in the protoplanetary disks around stars, from which planets are formed.
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