Synthesis and Spectroscopic Characterization of Interstellar Candidate Ethynyl Thiocyanate: HCCSCN

Elena R. Alonso; Aran Insausti; Lucie Kolesniková; Iker León; Brett A. McGuire; Christopher N. Shingledecker; Marcelino Agúndez; José Cernicharo; Víctor M. Rivilla; Carlos Cabezas

doi:10.3847/1538-4357/ad85ce

Synthesis and Spectroscopic Characterization of Interstellar Candidate Ethynyl Thiocyanate: HCCSCN

Astrophysics of Galaxies 2024-11-19 v1

Authors: Elena R. Alonso , Aran Insausti , Lucie Kolesniková , Iker León , Brett A. McGuire , Christopher N. Shingledecker , Marcelino Agúndez , José Cernicharo , Víctor M. Rivilla , Carlos Cabezas

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Abstract

This work aims to spectroscopically characterize and provide for the first time direct experimental frequencies of the ground vibrational state and two excited states of the simplest alkynyl thiocyanate (HCCSCN) for astrophysical use. Both microwave (8-16~GHz) and millimeter wave regions (50-120~GHz) of the spectrum have been measured and analyzed in terms of Watson's semirigid rotor Hamiltonian. A total of 314 transitions were assigned to the ground state of HCCSCN and a first set of spectroscopic constants have been accurately determined. Spectral features of the molecule were then searched for in Sgr B2(N), NGC 6334I, G+0.693-0.027 and TMC-1 molecular clouds. Upper limits to the column density are provided.

Keywords

interstellar molecule spectroscopic characterization microwave spectroscopy millimeter wave spectroscopy HCCSCN molecular clouds

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@article{arxiv.2411.11802,
  title  = {Synthesis and Spectroscopic Characterization of Interstellar Candidate Ethynyl Thiocyanate: HCCSCN},
  author = {Elena R. Alonso and Aran Insausti and Lucie Kolesniková and Iker León and Brett A. McGuire and Christopher N. Shingledecker and Marcelino Agúndez and José Cernicharo and Víctor M. Rivilla and Carlos Cabezas},
  journal= {arXiv preprint arXiv:2411.11802},
  year   = {2024}
}

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9 Pages, 6 Figures, 3 Tables

Synthesis and Spectroscopic Characterization of Interstellar Candidate Ethynyl Thiocyanate: HCCSCN

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