M. Agúndez, C. Bermúdez, C. Cabezas, G. Molpeceres, Y. Endo, N. Marcelino, B. Tercero, J.-C. Guillemin, P. de Vicente, and J. Cernicharo
discovered
The rich interstellar reservoir of dinitriles: Detection of malononitrile and maleonitrile in TMC-1
Astron. Astrophys. 688, Art. No. L31 (2024).
Both molecules were detected in the course of the QUIJOTE line survey of the dark cloud TMC-1 with the Yebes 40 m dish. through six rotational transitions between 32.6 and 46.3 GHz having 11 ≤ J ≤ 17 with good to reasonable signal-to-noise ratios. A rotational tempertaure of 6.0 ± 0.5K was derived. The column density ratios are about 45 : 1 for HNC₃ : HNC₅ and about 5100 : 10 : 1 for HC₅N : HC₄NC : HNC₅.

Contributor(s): H. S. P. Müller; 09, 2024