The detection of interstellar methyl-diacetylene

Details The detection of interstellar methyl-diacetylene The detection of interstellar methyl-diacetylene

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...286l..23l&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 286, Nov. 1, 1984, p. L23-L26.

Astronomy and Astrophysics

Astrophysics

9

Abundance, Interstellar Gas, Molecular Clouds, Molecular Spectra, Cyano Compounds, Methyl Compounds

Scientific paper

Four transitions of the molecule methyl-diacetylene (CH3C4H) have been detected toward the cold molecular cloud TMC-1. The presence of this molecule shows that long carbon chain molecules in the interstellar medium can be built with the methyl end group. The column density of CH3C4H toward TMC-1 is 2.8×1013cm-2 at Tk = 15K or 2.0×1013cm-2 at Tk = 10K, a factor of 4 larger than that of the isoelectronic species CH3C3N (5×1012cm-2) which has recently been detected in this same cloud by Broton and colleagues.

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