Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ===== On the Detection of 1H-Cyclopent[cd]indene, c-C11H8, in the ISM ===== R. Fuentetaja, C. Cabezas, M. Agúndez, B. Tercero, N. Marcelino, P. de Vicente, and J. Cernicharo \\ reported on the\\ **[[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).\\ 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.\\ \\ ---- Contributor(s): H. S. P. Müller; 02, 2026 ---- molecules/ism/1h-cyclopent_cd_indene.txt Last modified: 2026/03/02 12:35by mueller