M. Rey-Montejo, I. Jiménez-Serra, J. Martín-Pintado, V. M. Rivilla, A. Megías, D. San Andrés, M. Sanz-Novo, L. Colzi, S. Zeng, Á. López-Gallifa, A. Martínez-Henares, S. Martín, B. Tercero, P. de Vicente6, and M. Requena-Torres
announced the
Discovery of MgS and NaS in the Interstellar Medium and Tentative Detection of CaO
Astrophys. J. 975, Art. No. 174 (2024).
HNSO was detected in the course of a molecular line survey of the Galactic Center molecular cloud G+0.693–0.027 employing the Yebes 40 m and IRAM 30 m radio telecopes. The a-type transitions cover 34 to 171 GHz with 1 ≤ J ≤ 10 and K_a ≤ 2. Six lines were deemed to be unblended, and 12 more were only slightly blended. An excitation temperature of ~12 K was derived. The molecule is slightly more abundant than the somewhat related HNCS molecule. SO and SO₂ are more abundant by factors of ~38 and ~5, respectively, while NS is ~3.5 times more abundant. The higher energy isomer HSNO was not detected.

Contributor(s): H. S. P. Müller; 11, 2024