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Article Dans Une Revue Monthly Notices of the Royal Astronomical Society: Letters Année : 2017

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

P. Gratier
Valentine Wakelam
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Audrey Coutens

Résumé

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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hal-01599691 , version 1 (01-06-2024)

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Liton Majumdar, Jean-Christophe Loison, M. Ruaud, P. Gratier, Valentine Wakelam, et al.. Methyl isocyanate CH3NCO: An important missing organic in current astrochemical networks. Monthly Notices of the Royal Astronomical Society: Letters, 2017, 473 (1), pp.L59-L63. ⟨10.1093/mnrasl/slx157⟩. ⟨hal-01599691⟩
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