K. Kawaguchi, Y. Kasai, S.-I. Ishikawa, M. Ohishi, N. Kaifu, and T. Amano
reported on
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.
Contributor(s): H. S. P. Müller; 07, 2015