On the Detection of Cyanovinyl Radicals in Space

C. Cabezas, J. Tang, M. Agúndez, K. Seiki, Y. Sumiyoshi, Y. Ohshima, B. Tercero, N. Marcelino, R. Fuentetaja, P. de Vicente, Y. Endo, and J. Cernicharo
announced the
Laboratory and Astronomical Discovery of the Cyanovinyl Radical H2CCCN,
Astron. Astrophys. 676, Art. No. L1 (2023)
Two a-type transitions with J = 4 − 3 and 5 − 4 and Ka = 0 around 34.9 and 43.65 GHz were detected in several fine and hyperfine components in the course of the QUIJOTE line survey carried out with the Yebes 40 m dish. Some of the lines were blended to different degrees. A rotational temperature of ~6 K was adopted. The molecule is about a factor of 26 less abundant than vinyl cyanide.


Contributor(s): H. S. P. Müller; 08, 2023