ExoMol line lists – XXXVIII. High-temperature molecular line list of silicon dioxide (SiO2). Issue 2 (14th May 2020)

• Record Type: Journal Article
• Authors: Owens, A; Conway, E K; Tennyson, J; Yurchenko, S N
• Is Part Of: Monthly notices of the Royal Astronomical Society. Volume 495:Issue 2(2020)
• Page Start: 1927
• Page End: 1933
• Publication Date: 2020-05-14
• Subjects: molecular data -- opacity -- planets and satellites: atmospheres -- stars: atmospheres -- ISM: molecules; Astronomy -- Periodicals; Periodicals; 520.5
• DOI: 10.1093/mnras/staa1287
• Languages: English
• ISSNs: 0035-8711

Abstract

ABSTRACT: 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 μ m) 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 .