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| molecules:ism:nchccs [2024/05/27 12:20] – created mueller | molecules:ism:nchccs [2024/05/31 14:11] (current) – mueller |
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| **[[https://doi.org/10.1051/0004-6361/202450323|Laboratory and astronomical discovery of cyanothioketene, NCCHCS, in the cold starless core TMC-1]]**\\ | **[[https://doi.org/10.1051/0004-6361/202450323|Laboratory and astronomical discovery of cyanothioketene, NCCHCS, in the cold starless core TMC-1]]**\\ |
| //Astron. Astrophys.// **686**, (2024), Art. No. L3.\\ | //Astron. Astrophys.// **686**, (2024), Art. No. L3.\\ |
| The molecule was identified in the course of a line survey carried out with the Yebes 40 m and IRAM 30 m dishes. Three transitions, //J// = 3 − 2 (~36.9 GHz), 4 − 3 (~49.2 GHz), and 6 − 5 (~73.8 GHz) were detected with good to reasnable signal-to-noise ratios. HNCS is anout a factor of 36 more abundant, while for HSCN the factor is about 92.\\ | The molecule, which is also known as cyanoethenthione, was identified in the course of a line survey carried out with the Yebes 40 m dishe. 23 //a//-type transitions with 8 ≤ //J// ≤ 14 and //K<sub>a</sub>// ≤ 2 were detected between 31 and 50 GHz with good to reasnable signal-to-noise ratios. The thioketene to cyanothioketene ratio is as low as ~6.5, while the ratio of the more abundant thioformaldehyde to cyanothioformaldehyde is ~28. Cyanoketene was not detected, and the ketene to cyanoketene is > ~430. Judging by the formaldehyde to cyanoformaldehyde ratio of ~1400, the observation of cyanoketene may require only a modest increase in sensitivity.\\ |
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