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ExoMol molecular line lists - XIV: The rotation-vibration spectrum of hot SO2
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Abstract
Sulphur dioxide is well-known in the atmospheres of planets and satellites, where its
presence is often associated with volcanism, and in circumstellar envelopes of young
and evolved stars as well as the interstellar medium. This work presents a line list of 1.3
billion 32S
16O2 vibration-rotation transitions computed using an empirically-adjusted
potential energy surface and an ab initio dipole moment surface. The list gives complete
coverage up to 8000 cm−1
(wavelengths longer than 1.25 µm) for temperatures below
2000 K. Infrared absorption cross sections are recorded at 300 and 500 C are used to
validated the resulting ExoAmes line list. The line list is made available in electronic
form as supplementary data to this article and at www.exomol.com