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Description
Line lists for magnesium oxide are computed and extensive comparisons are made with existing experimental spectra. The LiTY line lists cover all ro-vibration transitions within the five lowest-lying electronic states (X, a, A, B, b) and five isotopologues ^24^Mg^16^O, ^25^Mg^16^O, ^26^Mg^16^O, ^24^Mg^17^O, ^24^Mg^18^O. The calculation use potential energy cures, spin-orbit and electronic angular momentum couplings curves determined by fitting to empirical energy levels which are reproduced to within 0.01cm^-1^ in most cases. The computed wavefunctions combined with ab initio dipole moment curves giving transition intensities and excited state radiative lifetimes which are compared with laboratory measurements. The ^24^Mg^16^O line list comprises 186842 (J<=320) ro-vibronic states and 72833173 transitions with for angular momenta, J, up to 300 and covering energies in wavenumber up to 33000cm^-1^. The line list are suitable for temperatures up to about 5000K. They are relevant to astrophysical studies of exoplanet atmospheres, cool stars and brown drafts.
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