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| molecules:ism:cyanocoronen [2025/05/15 13:54] – mueller | molecules:ism:cyanocoronen [2025/05/15 14:03] (current) – mueller |
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| **[[https://doi.org/10.3847/2041-8213/adc911|Discovery of the Seven-ring Polycyclic Aromatic Hydrocarbon Cyanocoronene (C<sub>24</sub>H<sub>11</sub>CN) in GOTHAM Observations of TMC-1]]**\\ | **[[https://doi.org/10.3847/2041-8213/adc911|Discovery of the Seven-ring Polycyclic Aromatic Hydrocarbon Cyanocoronene (C<sub>24</sub>H<sub>11</sub>CN) in GOTHAM Observations of TMC-1]]**\\ |
| //Astrophys. J. Lett.// **984**, Art. No. L36 (2025).\\ | //Astrophys. J. Lett.// **984**, Art. No. L36 (2025).\\ |
| The molecule was identified in the course of the GOTHAM survey of TMC-1 carried out with the 100 m GBT dish. Several oblate paired //a//-type rotational transitions with 31 ≤ //J// ≤ 37 and //K<sub>c</sub>// close to //J//. Each pair of lines is close to the noise limit, but stacking achieves a S/N of about 7. The derived column density is, for example, about twice that of each of 1- and 2-cyanonaphtalene and only slightly less than that of benzonitrile.\\ | The molecule was identified in the course of the GOTHAM survey of TMC-1 carried out with the 100 m GBT dish. Several oblate paired //a//-type rotational transitions were observed. Several of these had an S/N of about 3; stacking improved the result. The derived column density is comparable to many related aromatic cyano derivatives, highest among individual presently known ones. A rotational temperature of 6 K was derived with great accuracy.\\ |
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