ExoMol line lists - XXXVIII. High-temperature molecular line list of silicon dioxide (SiO2)

Silicon dioxide (SiO₂) is expected to occur in the atmospheres of hot rocky super-Earth exoplanets but a lack of spectroscopic data is hampering its possible detection. Here, we present the first, comprehensive molecular line list for SiO₂. The line list, named OYT3, covers the wavenumber range 0 - 6000 cm^-1 (wavelengths λ > 1.67 μm) and is suitable for temperatures up to T = 3000 K. Almost 33 billion transitions involving 5.69 million rotation-vibration states with rotational excitation up to J = 255 have been computed using robust first-principles methodologies. The OYT3 line list is available from the ExoMol data base at www.exomol.com.