molecules:ism:nccnh-plus [CDMS classic documentation]

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===== 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\\
**[[https://doi.org/10.1051/0004-6361/201526650|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\\
**[[https://doi.org/10.1093/mnrasl/sly228|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<sup>+</sup> 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.


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Contributor(s): H. S. P. Müller; 07, 2015; 01, 2019

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