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ExoMol line lists – XLI. High-temperature molecular line lists for the alkali metal hydroxides KOH and NaOH

Owens, A; Tennyson, J; Yurchenko, SN; (2021) ExoMol line lists – XLI. High-temperature molecular line lists for the alkali metal hydroxides KOH and NaOH. Monthly Notices of the Royal Astronomical Society , 502 (1) pp. 1128-1135. 10.1093/mnras/staa4041. Green open access

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Abstract

Potassium hydroxide (KOH) and sodium hydroxide (NaOH) are expected to occur in the atmospheres of hot rocky super-Earth exoplanets but a lack of spectroscopic data is hampering their potential detection. Using robust first-principles methodologies, comprehensive molecular line lists for KOH and NaOH that are applicable for temperatures up to T = 3500 K are presented. The KOH OYT4 line list covers the 0–6000 cm−1 (wavelengths λ > 1.67 µm) range and comprises 38 billion transitions between 7.3 million energy levels with rotational excitation up to J = 255. The NaOH OYT5 line list covers the 0–9000 cm−1 (wavelengths λ > 1.11 µm) range and contains almost 50 billion lines involving 7.9 million molecular states with rotational excitation up to J = 206. The OYT4 and OYT5 line lists are available from the ExoMol database at www.exomol.com and should greatly aid the study of hot rocky exoplanets.

Type: Article
Title: ExoMol line lists – XLI. High-temperature molecular line lists for the alkali metal hydroxides KOH and NaOH
Open access status: An open access version is available from UCL Discovery
DOI: 10.1093/mnras/staa4041
Publisher version: https://doi.org/10.1093/mnras/staa4041
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10121436
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