molecules:ism:mec7n [CDMS classic documentation]

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===== On Methylcyanotriacetylene in Space =====

M. A. Siebert, K. L. K. Lee, A. J. Remijan, A. M. Burkhardt, The GOTHAM Collaboration, R. A. Loomis, M. C. McCarthy, and B. A. McGuire\\
reported on the\\
**[[https://doi.org/10.3847/1538-4357/ac3238|CH3-Terminated Carbon Chains in the GOTHAM Survey of TMC-1: Evidence of Interstellar CH<sub>3</sub>C<sub>7</sub>N]]**\\
//Astrophys. J.// **924** (2022), Art. No. 21.\\ 
The observations were obtained in the course of the line survey Green Bank Telescope Observations of TMC-1: Hunting for Aromatic Molecules. The data were recorded with very high resolution which resolves, at least in part, the complex velocity structure and the <sup>14</sup>N hyperfine structure splitting. Methylcyanotriacetylene, aka cyanoheptatriyne, was indentified through line-stacking with a signal-to-noise ratio that was slightly below the 5//σ// level deemed to be required for a secure detection, and thus viewed as a tentative detection. The derived low excitation temperature and the column density appear to be in line with trends from methylcyanoacetylene and methylcyanodiacetylene.\\


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Contributor(s): H. S. P. Müller; 03, 2022

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