On the Detection of Protonated Cyanogen, NCCNH<sup>+</sup>, in Space
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
reported on
Probing Non-polar Interstellar Molecules through Their Protonated Form: Detection of Protonated Cyanogen (NCCNH<sup>+</sup>),
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 cloud TMC-1 (cyanopolyyne peak) and the young stellar object IRAS 18148–0440 in the L483 dense core. The former transition was observed with the IRAM 30 m telescope, the latter with the Yebes 40 m telescope.
V. M. Rivilla, J. Martín-Pintado, I. Jiménez-Serra, S. Zeng, S. Martín, J. Armijos-Abendañdo, M. A. Requena-Torres, R. Aladro, and D. Riquelme
reported on
Abundant Z-cyanomethanimine in the Interstellar Medium: Paving the Way to the Synthesis of Adenine
Mon. Not. R. Soc. Astron. 483, L114–L119 (2019).
The authors also detected HNCCN+ in two transitions. The results were obtained in the course of a line survey of the Galactic center source G 0.693–0.03 at 3 mm using the IRAM 30 m dish; additional observation around 1.3 cm were carried out with the GBT 100 m dish. The source is kinitically fairly warm, but the excitation temperature is rather cold, about 10 K.
Contributor(s): H. S. P. Müller; 07, 2015; 01, 2019