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| molecules:ism:c5h4 [2024/08/15 14:52] – mueller | molecules:ism:c5h4 [2024/08/15 15:36] (current) – mueller |
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| **[[https://doi.org/10.1051/0004-6361/202348777|Discovery of allenyl acetylene, Discovery of HCCCH<sub>2</sub>CCH in TMC-1 with the QUIJOTE line survey]]**\\ | **[[https://doi.org/10.1051/0004-6361/202348777|Discovery of allenyl acetylene, Discovery of HCCCH<sub>2</sub>CCH in TMC-1 with the QUIJOTE line survey]]**\\ |
| //Astron. Astrophys.// **688**, Art. No. L15 (2024).\\ | //Astron. Astrophys.// **688**, Art. No. L15 (2024).\\ |
| 1,4-Pentadiyne was identified through 18 unblended or slightly blended //b//-type transitions with 2 ≤ //J// ≤ 12 and //K<sub>a</sub>// ≤ 2 in the course of a molecular line survey of the prototypical cold dark molecular cloud TMC-1 carried out with the Yebes 40 m radio telescope between 31.5 and 49.6 GHz. A value of //T//<sub>rot</sub> = 9.5 ± 0.5 K was derived. The column density of 1,4-pentadiyne is about a factor of 1.4 higher than that of the isoelectronic mono cyanide and about a factor of 1.4 less abundant than the ethynylallene isomer.\\ | 1,4-Pentadiyne was identified through 18 mostly unblended or slightly blended //b//-type transitions with 2 ≤ //J// ≤ 12 and //K<sub>a</sub>// ≤ 2 in the course of a molecular line survey of the prototypical cold dark molecular cloud TMC-1 carried out with the Yebes 40 m radio telescope between 31.5 and 49.6 GHz. A value of //T//<sub>rot</sub> = 9.5 ± 0.5 K was derived. The column density of 1,4-pentadiyne is about a factor of 1.4 higher than that of the isoelectronic mono cyanide and about a factor of 1.4 less abundant than the ethynylallene isomer.\\ |
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