10min:

JONATHAN P. TOWLE, Smithsonian Astrophysical Observatory, 60 Garden Street MS 72, Cambridge, MA 02138, USA .

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In recent years the C² state of AlO has been the subject of some controversy. In 1994 Towle \et \footnoteJ.P. Towle, A.M. James, O.L. Bourne and B. Simard, J. Mol. Spectrosc. 163 (1994) 300. published the results and analysis of a high resolution study of the C²-X²⁺ (0,0) band. Later in 1994 Towle \et \footnoteJ.P. Towle, A.M. James, O.L. Bourne, B. Simard, M. Singh and M.D. Sakena, J. Mol. Spectrosc. 167 (1994) 472. published a reanalysis of that data in combination more data from Singh and Sakena \footnoteM. Singh and M.D. Sakena, Can. J. Phys. 61 (1983) 1347. The reanalysis yielded molecular constants for the C² state that were in agreement with those published in ^a to within experimental accuracy. Ito \et \footnoteN. Ito, H. Ito and K. Kuchitsu, Chem. Phys. Lett. , 276 (1997) 139. have reanalyzed the data from ^c and published a set of molecular constants that are markedly different from those of Towle \et ^a These differences will be discussed.