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| molecules:ism:ecp [2022/08/03 11:44] – mueller | molecules:ism:ecp [2023/09/27 15:57] (current) – mueller |
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| //Astron. Astrophys.// **663**, Art. No. L9 (2022).\\ | //Astron. Astrophys.// **663**, Art. No. L9 (2022).\\ |
| The molecular line survey was carried out with the Yebes 40 m radio telescope between 31.0 and 50.4 GHz. Ethenylidenecyclopentadiene, aka fulvenallene, was detected in several //a//-type transitions having 8 ≤ //J// ≤ 14 and //K<sub>a</sub>// ≤ 3. A considerable fraction of the lines is not or only slightly blended. A value of //T//<sub>rot</sub> = 9 ± 1 K was derived through a rotation diagram. Its column density is only about a factor of 4.5 lower than that of cyclopentadiene and about a factor of 11 to 26 of what has been estimated for ethene.\\ | The molecular line survey was carried out with the Yebes 40 m radio telescope between 31.0 and 50.4 GHz. Ethenylidenecyclopentadiene, aka fulvenallene, was detected in several //a//-type transitions having 8 ≤ //J// ≤ 14 and //K<sub>a</sub>// ≤ 3. A considerable fraction of the lines is not or only slightly blended. A value of //T//<sub>rot</sub> = 9 ± 1 K was derived through a rotation diagram. Its column density is only about a factor of 4.5 lower than that of cyclopentadiene and about a factor of 11 to 26 of what has been estimated for ethene.\\ |
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