===== On the Detection of Protonated Cyanoacetylene, HC3NH+, in Space =====

K. Kawaguchi, Y. Kasai, S.-I. Ishikawa, M. Ohishi, N. Kaifu, and T. Amano\\
reported on\\
**[[https://ui.adsabs.harvard.edu/abs/1994ApJ...420L..95K|Detection of a new Molecular Ion HC<sub>3</sub>NH<sup>+</sup> in TMC-1]]**,\\
//Astrophys. J.// **420**, L95 – L97 (1994).\\
The //J"// = 3 and 4 transitions near 34.6 and 43.3 GHz were detected in emission using the Nobeyama 45 m dish.


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Contributor(s): H. S. P. Müller; 07, 2015

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