===== On the Detection of Ethyl isocyanate in Space =====

L. F. Rodríguez-Almeida, V. M. Rivilla, I. Jiménez-Serra, M. Melosso, L. Colzi, S. Zeng, B. Tercero, P. de Vicente, S. Martín, M. A. Requena-Torres, F. Rico-Villas and J. Martín-Pintado \\
reported on the\\
**[[https://doi.org/10.1051/0004-6361/202141989|First detection of C<sub>2</sub>H<sub>5</sub>NCO in the ISM and search of other isocyanates towards the G+0.693−0.027 molecular cloud]]**\\
//Astron. Astrophys.// **654** (2021), Art. No. L1.\\ 
8 rotational transitions of C<sub>2</sub>H<sub>5</sub>NCO, all but one //a//-types, with 5 ≤ //J// ≤ 8 and //K<sub>a</sub>// ≤ 2 were covered in the course of an unbiased molecular line survey of the quiescent giant molecular cloud G+0.693−0.027, about 1' north-east of Sagittarius B2(N), carried out with the Yebes 40 m dish at 7 mm. Five transitions are unblended or only slightly blended. The lines were modeled quite well employing an LTE fit with //T//<sub>rot</sub> = 10 ± 2 K. The column density ratio of methyl to ethyl isocyanate was estimated to be about 8.

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Contributor(s): H. S. P. Müller; 10, 2021

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