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Published January 1972 | Published
Journal Article Open

Search for Interstellar Furan and lmidazole


Results are reported of an unsuccessful 6-cm search for the hetrocyclic carbon ring molecules furan and imidazole. Upper limits in brightness temperature of 0.25 K or less are found for furan in 11 galactic sources, and of less than 0.1 K for imidazole in Sgr A and Sgr B2.

Additional Information

© Gordon and Breach 1972. Received 18 October 1971. We thank G. R. Tomasevich and K. D. Tucker for the laboratory measurement of the furan transition frequency, and R. D. Brown and I. R. Elsum for making available their measurements of the imidazole transition frequencies prior to publication. The National Radio Astronomy Observatory is operated by Associated Universities, Inc. under contract to the National Science Foundation.

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Published - 1972ApL____10____1D.pdf


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August 19, 2023
October 20, 2023