Carrier of the Interstellar 89.190 GHz Line

Details Carrier of the Interstellar 89.190 GHz Line Carrier of the Interstellar 89.190 GHz Line

Sep 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970natur.227.1230k&link_type=abstract

Nature, Volume 227, Issue 5264, pp. 1230 (1970).

Physics

76

Scientific paper

THE unidentified interstellar line discovered by Snyder and Buhl1 (reported at the IAU general assembly, Brighton) with estimated rest frequency of 89.190 GHz is well within estimation error of the first rotational transition expected for the molecular ion HCO+. This species is isoelectronic with HCN and is extremely stable. The molecular geometry expected for this ion is linear, with bond lengths rCH = 1.06 Å and rCO = 1.115 Å. These distances are the CH bond length in HCN and the CO bond length in the ion CO+. This set of geometric parameters gives a rotational constant B = 44.623 GHz. The lowest transition frequency, ν = 2B, is predicted at 89.246 GHz.

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