Detection of Interstellar HC4NC and an Investigation of Isocyanopolyyne Chemistry under TMC-1 Conditions

@article{Xue2020DetectionOI,
  title={Detection of Interstellar HC4NC and an Investigation of Isocyanopolyyne Chemistry under TMC-1 Conditions},
  author={C. Xue and E. Willis and R. Loomis and Kin Long Kelvin Lee and A. Burkhardt and C. Shingledecker and S. Charnley and M. Cordiner and S. Kalenskii and M. McCarthy and E. Herbst and A. Remijan and B. McGuire},
  journal={arXiv: Astrophysics of Galaxies},
  year={2020}
}
We report an astronomical detection of HC$_4$NC for the first time in the interstellar medium with the Green Bank Telescope toward the TMC-1 molecular cloud with a minimum significance of $10.5 \sigma$. The total column density and excitation temperature of HC$_4$NC are determined to be $3.29^{+8.60}_{-1.20}\times 10^{11}$ cm$^{-2}$ and $6.7^{+0.3}_{-0.3}$ K, respectively, using the MCMC analysis. In addition to HC$_4$NC, HCCNC is distinctly detected whereas no clear detection of HC$_6$NC is… Expand

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