M. Agúndez, J. Cernicharo, P. de Vicente, N. Marcelino, E. Roueff, A. Fuente,
M. Gerin, M. Guélin, C. Albo, A. Barcia, L. Barbas, R. Bolaño, F. Colomer, M. C. Diez,
J. D. Gallego, J. Gómez-González, I. López-Fernández, J. A. López-Fernández,
J. A. López-Pérez, I. Malo, J. M. Serna, and F. Tercero
Probing Non-polar Interstellar Molecules through Their Protonated Form: Detection of Protonated Cyanogen (NCCNH+),
Astron. Astrophys. 579, Art. No. L10 (2015).
The J = 10 9 and 5 4 transitions near 88.8 and 44.4 GHz were detected in emission toward the dark clouds TMC-1 (cyanopolyyne peak) and L483. The former transition was observed with the IRAM 30 m telescope, the latter with the Yebes 40 m telescope.