Space and laboratory discovery of HC₃ <b>S</b>^.

ABSTRACT: We report the detection in TMC-1 of the protonated form of C₃S. The discovery of the cation HC₃S⁺ was carried through the observation of four harmonically related lines in the Q band using the Yebes 40m radiotelescope, and is supported by accurate ab initio calculations and laboratory measurements of its rotational spectrum. We derive a column density N(HC₃S⁺) = (2.0 ± 0.5) × 10¹¹ cm^-2, which translates to an abundance ratio C₃S/HC₃S⁺ of 65 ± 20. This ratio is comparable to the CS/HCS⁺ ratio (35 ± 8) and is a factor of about ten larger than the C₃O/HC₃O⁺ ratio previously found in the same source. However, the abundance ratio

SUBMITTER: Cernicharo J 

PROVIDER: S-EPMC7610522 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature