Laboratory Detection of the Cyanopolyyne HC 13N

Details Laboratory Detection of the Cyanopolyyne HC 13N Laboratory Detection of the Cyanopolyyne HC 13N

Nov 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...472l..61t&link_type=abstract

Astrophysical Journal Letters v.472, p.L61

Astronomy and Astrophysics

Astronomy

5

Ism: Molecules, Line: Profiles, Molecular Data, Molecular Processes, Radio Lines: Ism

Scientific paper

The cyanopolyyne HC13N has been detected in the laboratory, and the frequency of 21 rotational transitions in the band 5--12 GHz has been measured to a few parts in 107; correspondingly precise values for the rotational constant and centrifugal distortion constant have been obtained from a least-squares fit to the data: B0 = 106.97258(4) MHz, D0 = 0.092(10) Hz (uncertainties in parentheses are 1 sigma in the last significant digit). The best lines for astronomical detection of this carbon chain, longer than any yet detected in space, probably lie in the band 5--30 GHz and can be calculated from B0 and D0 to better than 0.1 km s-1 in equivalent radial velocity.

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