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A new interstellar polyatomic molecule - Detection of propynal in the cold cloud TMC-1
Irvine, W. M.; Brown, R. D.; Cragg, D. M.; Friberg, P.; Godfrey, P. D.; Kaifu, N.; Matthews, H. E.; Ohishi, M.; Suzuki, H.; Takeo, H.
AA(Five College Radio Astronomy Observatory, Amherst, MA), AB(Monash University, Clayton, Australia), AC(Monash University, Clayton, Australia), AD(Monash University, Clayton, Australia), AE(Onsala Rymdobservatorium, Sweden)
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 335, Dec. 15, 1988, p. L89-L93. Research supported by NSF, Naturvetenskapliga Forskningsradet, Australian Research Grants Scheme, and Monash University. (ApJL Homepage)
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NASA/STI Keywords:
Carbon Compounds, Interstellar Matter, Molecular Clouds, Polyatomic Molecules, Abundance, Carbon Monoxide, Line Spectra
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The authors report the detection of the acetylene derivative propynal (HC ≡ CCHO) in the cold cloud TMC-1, with an abundance that is very close to that for the related species tricarbon monoxide (C3O). Propadienone, an isomer of propynal with the formula H2C = C = C = O, was not detected.

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