Molecular parameters for D, E, F, and G-A band systems of the astrophysically significant molecule AlF

Abstract

Franck-Condon factors andr-centroids, which are a measure oftransition probabilities, have been evaluated by a numerical integration procedure for the bands of D1Δ,E1Π, F1Π and G1Σ+ A1Π systems of AlFmolecule.The species has been observed incircumstellar envelopes around AGB stars and spectral studies report its presence in sunspots. The molecularparameters evaluated are necessary forstudying the physical and dynamical properties of these sources.