SIMBAD references

The detection of rotational transitions of the AlO radical at millimeter wavelengths from an astronomical source has recently been reported. In view of this, rotational transitions in the ground X²Σ⁺ state of AlO have been reinvestigated. Comparisons between Fourier transform and microwave data indicate a discrepancy regarding the derived value of γ_D in the v=0 level of the ground state. This discrepancy is discussed in the light of comparisons between experimental data and synthesized rotational spectra in the v=0, 1 and 2 levels of X²Σ⁺. A list of calculated rotational lines in v=0, 1 and 2 of the ground state up to N'=11 is presented which should aid astronomers in analysis and interpretation of observed AlO data and also facilitate future searches for this radical.