Brady, Ryan P;
Yurchenko, Sergei N;
Tennyson, Jonathan;
Kim, Gap-Sue;
(2024)
ExoMol line lists – LVI. The SO line list, MARVEL analysis of experimental transition data and refinement of the spectroscopic model.
Monthly Notices of the Royal Astronomical Society
, 527
(3)
pp. 6675-6690.
10.1093/mnras/stad3508.
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Abstract
A semi-empirical IR/Vis line list, SOLIS, for the sulphur monoxide molecule 32S16O is presented. SOLIS includes accurate empirical rovibrational energy levels, uncertainties, lifetimes, quantum number assignments, and transition probabilities in the form of Einstein A coefficients covering the X 3Σ−, a 1Δ, b 1Σ+, A 3Π, B 3Σ−, A″ 3Σ+, A′ 3Δ and e 1Π systems and wavenumber range up to 43303.5 cm−1 (≥230.93 nm) with J ≤ 69. SOLIS has been computed by solving the rovibronic Schrödinger equation for diatomics using the general purpose variational code Duo and starting from a published ab initio spectroscopic model of SO (including potential energy curves, coupling curves, (transition) dipole moment curves) which is refined to experimental data. To this end, a database of 50 106 experimental transitions, 48 972 being non-redundant, has been compiled through the analysis of 29 experimental sources, and a self-consistent network of 8558 rovibronic energy levels for the X, a, b, A, B, and C electronic states has been generated with the marvel algorithm covering rotational and vibrational quantum numbers J ≤ 69 and v ≤ 30 and energies up to 52350.40 cm−1. No observed transitions connect to the B 3Σ−(v = 0) state which is required to model perturbations correctly, so we leave fitting the B 3Σ− and C 3Π state UV model to a future project. The SO line list is available at ExoMol from www.exomol.com.
| Type: | Article |
|---|---|
| Title: | ExoMol line lists – LVI. The SO line list, MARVEL analysis of experimental transition data and refinement of the spectroscopic model |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stad3508 |
| Publisher version: | https://doi.org/10.1093/mnras/stad3508 |
| Language: | English |
| Additional information: | Copyright © 2023 The Author(s). This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Molecular data, exoplanets, stars: atmospheres, planets and satellites: atmospheres |
| 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/10182400 |
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