CH3NCO detections in observations and the laboratory. Issue Volume 13:Issue S332(2017) (4th September 2018)

• Record Type: Journal Article
• Authors: Ligterink, N. F. W.
• Editors: Cunningham, Maria; Millar, Tom; Aikawa, Yuri
• Is Part Of: Proceedings of the International Astronomical Union. Volume 13:Issue S332(2017)
• Page Start: 360
• Page End: 363
• Publication Date: 2018-09-04
• Subjects: Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921317007827
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: Methyl isocyanate (CH3 NCO) 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). CH3 NCO is detected towards IRAS16293 as a warm component with Tex > 100 K and HNCO/CH3 NCO ∼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.