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arXiv · 1709.10118

Methyl isocyanate CH3NCO: An important missing organic in current astrochemical networks

Liton Majumdar·Jean-Christophe Loison·Maxime Ruaud·Pierre Gratier·Valentine Wakelam·Audrey Coutens
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Abstract

Methyl isocyanate (CH3NCO) is one of the important complex organic molecules detected on the comet 67P/Churyumov-Gerasimenko by Rosetta's Philae lander. It was also detected in hot cores around high-mass protostars along with a recent detection in the solar-type protostar IRAS 16293-2422. We propose here a gas-grain chemical model to form CH3NCO after reviewing various formation pathways with quantum chemical computations. We have used NAUTILUS 3-phase gas-grain chemical model to compare observed abundances in the IRAS 16293-2422. Our chemical model clearly indicates the ice phase origin of CH3NCO.

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Liton Majumdar, Jean-Christophe Loison, Maxime Ruaud, Pierre Gratier, Valentine Wakelam, Audrey Coutens. 2017-09-28. Methyl isocyanate CH3NCO: An important missing organic in current astrochemical networks. https://doi.org/10.1093/mnrasl%2Fslx157

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