Discovery of HC₃O⁺ in space: The chemistry of O-bearing species in TMC-1.

ABSTRACT: Using the Yebes 40m and IRAM 30m radio telescopes, we detected a series of harmonically related lines with a rotational constant B ₀=4460.590±0.001 MHz and a distortion constant D ₀=0.511 ±0.005 kHz towards the cold dense core TMC-1. High-level-of-theory ab initio calculations indicate that the best possible candidate is protonated tricarbon monoxide, HC₃O⁺. We have succeeded in producing this species in the laboratory and observed its J _u -J _l = 2-1 and 3-2 rotational transitions. Hence, we report the discovery of HC₃O⁺ in space based on our observations, theoretical calculations, and laboratory experiments. We derive an abundance ratio N(C_3<

SUBMITTER: Cernicharo J 

PROVIDER: S-EPMC7116414 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature