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The r-centroids for 36 bands of NbO (A2Δ → X2Δ), BiO (B 4 ∑ - ← X 2 1 ∏ 1 2 ) , PO (A2∑ → X2∏r and InF (B3∏1 → X1∑+) systems have been computed by the α-average quadratic equation and graphical methods. The agreement between the r v′,v″ values obtained by the two methods is satisfactory. Vibrational transition probabilities have been evaluated by an approximate analytical method for the NbO (A2Δ → X2Δ) and InF (B3∏1 - X1∑+) systems.

Franck-Condon factors and r-centroids for some bands of the D2Σ+ ↔ X2Σ+ system of SrH are presented and briefly discussed.

The potential-energy curves for Au-Be interactions, corresponding to the X2Σ+, A2Σ+ and BΠ 1 2 states of AuBe, have been computed by the Rydberg-Klein-Rees-Vanderslice (RKRV) method. The ground state dissociation energy has been estimated by fitting the Lippincott three-parameter potential functions to the RKRV curves. The dissociation products, as well as the dissociation energies, have been correlated for these states by using the Wigner-Whitmer rules.