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| molecules:ism:1h-cyclopent_cd_indene [2026/02/18 13:29] – mueller | molecules:ism:1h-cyclopent_cd_indene [2026/03/02 12:35] (current) – mueller |
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| **[[https://doi.org/10.1051/0004-6361/202558398|Discovery of 1H-Cyclopent[cd]indene (c-C11H8) in TMC-1 with the QUIJOTE Line Survey: A new Three-Ringed Polycyclic Aromatic Hydrocarbon]]**\\ | **[[https://doi.org/10.1051/0004-6361/202558398|Discovery of 1H-Cyclopent[cd]indene (c-C11H8) in TMC-1 with the QUIJOTE Line Survey: A new Three-Ringed Polycyclic Aromatic Hydrocarbon]]**\\ |
| //Astron. Astrophys.// **706**, Art. No. L10 (2026).\\ | //Astron. Astrophys.// **706**, Art. No. L10 (2026).\\ |
| The molecule was identified through 22 lines, each consisting of an oblated paired of four //a//- and //b//-type transitions with 15 ≤ //J// ≤ 24 and //J// − 5 ≤ //K<sub>c</sub>// ≤ //J//. The rotational temperature was assumed as 9 K. The derived column density is about a factor of 2.7 lower than that of indene and about a factor of 4.7 lower than that of phenalene.\\ | The molecule was identified through 22 //R//-branch lines, each consisting of an oblated paired of four //a//- and //b//-type transitions with 15 ≤ //J// ≤ 24 and //J// − 5 ≤ //K<sub>c</sub>// ≤ //J//. The rotational temperature was assumed as 9 K. The derived column density is about a factor of 2.7 lower than that of indene and about a factor of 4.7 lower than that of phenalene.\\ |
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