The detection of HC9N in interstellar space

Details The detection of HC9N in interstellar space The detection of HC9N in interstellar space

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...223l.105b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 223, July 15, 1978, p. L105-L107.

Astronomy and Astrophysics

Astrophysics

76

Brightness Temperature, Cyano Compounds, Interstellar Chemistry, Molecular Spectra, Abundance, Astronomical Spectroscopy, Molecular Weight

Scientific paper

With a molecular weight of 123 amu and 11 atoms, HC9N (cyano-octatetra-yne) is the heaviest and largest molecule yet detected in interstellar space. The J = 18-17 and J = 25-24 transitions have been observed in Heiles's Cloud 2 by using a molecular constant obtained by extrapolation from the lighter cyanopolyyne molecules. The column density is estimated to be trillion per sq cm, down by a factor of 4 from that of HC9N in the same source.

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