Search for interstellar pyrrole and furan

Details Search for interstellar pyrrole and furan Search for interstellar pyrrole and furan

Dec 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...242..541k&link_type=abstract

Astrophysical Journal, Part 1, vol. 242, Dec. 1, 1980, p. 541-544. Research supported by the Aerospace Corporate Programs for R

Astronomy and Astrophysics

Astronomy

7

Cyclic Hydrocarbons, Furans, Interstellar Chemistry, Molecular Clouds, Pyrroles, Electron Transitions, Interstellar Gas, Line Spectra, Millimeter Waves, Radio Sources (Astronomy)

Scientific paper

Unsuccessful searches for the organic ring molecules pyrrole (C4H4N) and furan (C3H4O) are reported. In TMC-1, an upper limit to the pyrrole column density of 4 x 10 to the 12th/sq cm is found an order of magnitude less than the column density of HC5N in this source. In Sgr B2, the upper limit to the pyrrole column density is 6 x 10 to the 13th/sq cm, about 0.4 times the HC5N column density. These results suggest that chemical processes in these clouds favor the formation of chains over rings of comparable molecular weight. During these searches, a number of unidentified millimeter wavelength lines were also found; their frequencies are reported here.

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