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CH3NCO detections in observations and the laboratory

Published online by Cambridge University Press:  04 September 2018

N. F. W. Ligterink  and
the PILS team
N. F. W. Ligterink
Affiliation:
Sackler Laboratory, Leiden Observatory, Leiden University, PO Box 9513, 2300 RA Leiden, The Netherlands
the PILS team
Affiliation:
Sackler Laboratory, Leiden Observatory, Leiden University, PO Box 9513, 2300 RA Leiden, The Netherlands
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Abstract

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Methyl isocyanate (CH3NCO) belongs to a select group of peptide-like prebiotic molecules. In this paper we present its first detection toward the solar type low-mass protostar IRAS16293-2422 (hereafter IRAS16293). CH3NCO is detected towards IRAS16293 as a warm component with Tex > 100 K and HNCO/CH3NCO ∼4-12. Also, its grain surface formation route is investigated in the laboratory. VUV processing of CH4:HNCO mixtures, investigated by IR spectroscopy and mass spectrometry, revealed that it can be formed by reactions of CH3 and with (H)NCO. Observations and experiments strongly hint that methyl isocyanate is formed on interstellar dust grains.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S332: Astrochemistry VII: Through the Cosmos from Galaxies to Planets , March 2017 , pp. 360 - 363
Copyright
Copyright © International Astronomical Union 2018 

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