On the Detection of Sulfeno, HSO, in the ISM

N. Marcelino, C. Puzzarini, M. Agúndez, R. Fuentetaja, B. Tercero, P. de Vicente, and J. Cernicharo
described the
First Detection of the HSO Radical in Space
Astron. Astrophys. 674, Art. No. L13 (2023).
Several hyperfine components of the 101 − 000 transition near 39.5 and 39.9 GHz were detected with the Yebes 40 m dish toward the cold dense cores B1-b, TMC-1 CP, and L183 in the course of molecular line surveys. The strongest component near 39.532 GHz was also identified toward L483, L1495B, L1527, and Lupus-1A. The abundance ratio of SO to HSO shows some scatter, the former being often around a factor of 100 more abundant. There is indication that the ratio in L1527 is more like 6.


Contributor(s): H. S. P. Müller; 06, 2023