Line Lists for LiF and LiCl in the X1Σ+ Ground State

Vibration-rotation line lists for (LiF)-Li-6, (LiF)-Li-7, (LiCl)-Li-6-Cl-35, (LiCl)-Li-6-Cl-37, (LiCl)-Li-7-Cl-35, and (LiCl)-Li-7-Cl-37 in the X-1 Sigma(+) ground states have been prepared. The rovibrational energy levels have been calculated using potential energy surfaces determined by direct potential-fitting employing the rotational and rovibrational transition frequencies of all isotopologues, and required the inclusion of Born-Oppenheimer breakdown terms. Dipole moment functions calculated ab initio at the MRCI/aug-cc-pwCV5Z level have been used for line strength calculations. Partition functions for temperatures up to 5000 K have been calculated. LiF and LiCl are predicted to be present in the atmospheres of hot rocky exoplanets, brown dwarfs, and cool stars.