Carbon Chains and Exotic Rings in the Laboratory and in Space

Details Carbon Chains and Exotic Rings in the Laboratory and in Space Carbon Chains and Exotic Rings in the Laboratory and in Space

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pcim.conf..338t&link_type=abstract

The Physics and Chemistry of the Interstellar Medium, Proceedings of the 3rd Cologne-Zermatt Symposium, held in Zermatt, Septemb

Physics

Scientific paper

Forty-five new carbon chain molecules and one ring, rhomboidal SiC _3, have recently been detected in the laboratory with a Fourier transform microwave (FTM) spectrometer, and six of these have now been detected in at least one astronomical source with large radio telescopes. The set consists of 14 polyynes, 12 carbon chain radicals, 6 silicon-carbon molecules, and 14 free carbenes. The laboratory astrophysics of the entire set is ``complete'' for the time being, in the sense that nearly all the rotational transitions of current interest to radio astronomy (including hyperfine structure when present) can now be calculated to a small fraction of 1 km/s ^{-1} in equivalent radial velocity. The FTM spectrometer is far from fundamental limits of sensitivity, so many more molecules can probably be found with refinement of present techniques.

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