Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...309l..31m&link_type=abstract
Astronomy and Astrophysics, v.309, p.L31-L33
Astronomy and Astrophysics
Astrophysics
17
Line: Identification, Molecular Data, Techniques: Spectroscopic, Ism: Molecules, Radio Lines: Ism
Scientific paper
The C_8_H radical has been detected in an argon-acetylene discharge, conclusively confirming the identification by Cernicharo and Guelin in the accompanying Letter of their new linear molecule in IRC+10216. In addition to the ground ^2PI_3/2_ rotational ladder, the ^2PI_1/2_ ladder 19cm^-1^ above ground has been detected, and the entire fine structure-rotational spectrum calculated. The standard ^2PI Hamiltonian fits the laboratory measurements of more than 30 radio lines between 80 and 100GHz to high accuracy; yields precise values for the rotational, fine structure, and lambda-doubling constants; and allows the astronomically most interesting lines in the radio spectrum to be predicted to an uncertainty of 0.1km/s or better.
Gottlieb Carl A.
Kovacs Agnes
McCarthy Mary C.
Thaddeus Patrick
Travers M. J.
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