Abstract
Vibrational transition probabilities, namely Franck—Condon factors and\(\bar r\)-centroids have been evaluated by an approximate analytical method for the (A−X), (A′−X), and (A″−X) system of YO molecule. Morse potential energy curves forX2Σ+,A2Π2,A′2Π2, andA″2Π2, states of YO have been constructed using the latest spectroscopic data. The value of\(\bar r\)-centroids for the band have been found to decrease linearly with the corresponding wavelengths. We show results for two new transitions of (A′−X) and (A″−X) and five new bands of (A−X) of YO in the umbral spectrum of the Sun.
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