Abstract
The integrated intensities of a few bands in the vibrational structure of the astrophysically significant A1Σ+−X1Σ+ and A′ 1Π−X1Σ+ systems of barium monoxide (BaO) have been measured experimentally using band spectra. The radiative transition parameters such as Franck-Condon (FC) factor, r-centroid, electronic transition moment, Einstein coefficient, band oscillator strength, radiative life time and effective vibrational temperature have been computed for A1Σ+−X1Σ+ and A′ 1Π−X1Σ+ systems of BaO molecule by the more reliable numerical integration procedure for the experimentally known vibrational levels using Rydberg-Klein-Rees (RKR) potential energy curves. The effective vibrational temperatures of these band systems of BaO molecule are found to be nearly 3100 °K. Hence, the radiative transition parameters help us to ascertain the presence of BaO molecule in the interstellar medium and S-stars.
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