Laboratory detection of a new carbon-chain molecule C3S and its astronomical identification

Astronomy and Astrophysics – Astrophysics

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Astronomical Spectroscopy, Carbon Compounds, Interstellar Matter, Molecular Spectra, Sulfides, Gas Mixtures, Glow Discharges, Line Spectra, Microwave Spectra

Scientific paper

Three strong unidentified lines at 23123, 40465, and 46246 MHz recently detected in TMC-1 by Kaifu et al. were assigned to the J = 4-3, 7-6, and 8-7 rotational transitions of a new linear molecule C3S by using the laboratory spectroscopic result. The C3S molecule was generated by the same chemical system used for production of the CCS radical (see 131.531). The spectral lines of C332S and C334S were measured in the frequency region of 70-300 GHz and were least-squares analyzed to determine the molecular constants.

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