On the Detection of Aminomethylidyne, H<sub>2</sub>NC, in the ISM
C. Cabezas, M. Agúndez, N. Marcelino, B. Tercero, S. Cuadrado, and J. Cernicharo
reported on the
Interstellar Detection of the Simplest Aminocarbyne H<sub>2</sub>NC: An ignored but Abundant Molecule
Astron. Astrophys. 654, Art. No. A45 (2021).
The aminomethylidyne isomer was observed in the course of molecular line surveys of L483 and B1-b protostellar objects carried out at 3 mm using the IRAM 30 m telescope. The molecule was not detected in corresponding data of the prestellar core TMC-1. The column densities of H2CN and H2NC were essentially the same in the first two sources.
D. San Andrés, L. Colzi, V. M. Rivilla, J. García de la Concepción, M. Melosso, J. Martín-Pintado, I. Jiménez-Serra, S. Zeng, S. Martín, M. A. Requena-Torres
reported on the
H<sub>2</sub>CN/H<sub>2</sub>NC Abundance Ratio: A New Potential Temperature Tracer for the Interstellar Medium
Mon. Not. R. Astron. Soc. 523, 3239–3250 (2023).
The authors detect two transitions toward this kinetically warmer source and concomitantly a H2CN/H2NC ratio of about 2, different from ~1 in the kinetically colder sources L483 and B1-b.
Contributor(s): H. S. P. Müller; 10, 2021; 06, 2023