The Formation of Formaldehyde on Interstellar Carbonaceous Grain Analogs by O/H Atom Addition

Alexey Potapov1, Cornelia Jäger1, Thomas Henning2, Mindaugas Jonusas3,4, and Lahouari Krim3,4
Astrophysical Journal 846, 131 Link to Article [https://doi.org/10.3847/1538-4357/aa85e8]
1Laboratory Astrophysics Group of the Max Planck Institute for Astronomy at the Friedrich Schiller University Jena, Institute of Solid State Physics, Helmholtzweg 3, D-07743 Jena, Germany
2Max Planck Institute for Astronomy, Königstuhl 17, D-69117 Heidelberg, Germany
3Department of Chemistry, Sorbonne Universités, UPMC Univ Paris 06, UMR 8233, MONARIS, Paris F-75005, France
4CNRS, UMR 8233, MONARIS, Paris F-75005, France

An understanding of possible scenarios for the formation of astrophysically relevant molecules, particularly complex organic molecules, will bring us one step closer to the understanding of our astrochemical heritage. In this context, formaldehyde is an important molecule as a precursor of methanol, which in turn is a starting point for the formation of more complex organic species. In the present experiments, for the first time, following the synthesis of CO, formaldehyde has been produced on the surface of interstellar grain analogs, hydrogenated fullerene-like carbon grains, by O and H atom bombardment. The formation of H2CO is an indication for a possible methanol formation route in such systems.

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