Detection of HC11N in the Cold Dust Cloud TMC-1

@article{Bell1985DetectionOH,
  title={Detection of HC11N in the Cold Dust Cloud TMC-1},
  author={M. B. Bell and Paul A. Feldman and Michael J. Travers and Michael C. McCarthy and Carl A. Gottlieb and Patrick Thaddeus},
  journal={The Astrophysical Journal Letters},
  year={1985},
  volume={483},
  pages={L61 - L64}
}
Two consecutive rotational transitions of the long cyanopolyyne HC11N, J = 39 → 38 and 38 → 37, have been detected in the cold dust cloud TMC-1 at the frequencies expected from recent laboratory measurements by Travers and coworkers, and at about the expected intensities. The astronomical lines have a mean radial velocity of 5.8(1) km s-1, in good agreement with the shorter cyanopolyynes HC7N and HC9N observed in this very sharp line source [5.82(5) and 5.84(5) km s-1, respectively]. The column… 

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References

SHOWING 1-10 OF 10 REFERENCES

Detection of HC11N in IRC + 10°216

The observations of three rotational transitions (J = 70 → 69, 71 → 70, and 72 → 71) of HC11N (cyano-deca-penta-yne) in the microwave emission spectrum of the circumstellar envelope of the cool

A survey of carbon monoxide emission in dark clouds. [cosmic dust

Results are reported of a CO and $sup 13$CO survey of 68 dark clouds from the Lynds catalog. CO was detected in 63 of the 64 sources in which it was searched for, and the $sup 13$CO line was seen in

Long Chain Carbon Molecules in the Interstellar Medium

The long chain carbon molecules known as the cyanopolyynes (HCnN, n=3,5,7,9) are becoming increasingly more important in astrophysics. At present, the smallest member of the family, cyanoacetylene (

Detection of HC11N in the cold dust cloud TMC-1.

  • 1985

The detection of HC 9 N in interstellar space.

ApJS Nature

  • ApJS Nature
  • 1982

Interstellar Molecules, IAU Symposium

  • Interstellar Molecules, IAU Symposium
  • 1980

J. Mol. Spec

  • J. Mol. Spec
  • 1976

This 2-column preprint was prepared with the AAS L A T E X macros v4

  • This 2-column preprint was prepared with the AAS L A T E X macros v4