Yurchenko, SN;
Tennyson, J;
Syme, A-M;
Adam, AY;
Clark, VHJ;
Cooper, B;
Dobney, CP;
... Trujillo, JCZ; + view all
(2021)
ExoMol line lists - XLIV. IR and UV line list for silicon monoxide (SiO).
Monthly Notices of the Royal Astronomical Society
, Article stab3267. 10.1093/mnras/stab3267.
(In press).
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Abstract
A new silicon monoxide (28Si16O) line list covering infrared, visible and ultraviolet regions called SiOUVenIR is presented. This line list extends the infrared EBJT ExoMol line list by including vibronic transitions to the A 1Π and E 1Σ+ electronic states. Strong perturbations to the A 1Π band system are accurately modelled through the treatment of 6 dark electronic states: C 1Σ−, D 1Δ, a 3Σ+, b 3Π, e 3Σ− and d 3Δ. Along with the X 1Σ+ ground state, these 9 electronic states were used to build a comprehensive spectroscopic model of SiO using a combination of empirical and ab initio curves, including the potential energy (PE), spin-orbit (SO), electronic angular momentum (EAM) and (transition) dipole moment curves. The ab initio PE and coupling curves, computed at the multireference configuration interaction (MRCI) level of theory, were refined by fitting their analytical representations to 2617 experimentally derived SiO energy levels determined from 97 vibronic bands belonging to the X–X, E–X and A–X electronic systems through the MARVEL procedure. 112 observed forbidden transitions from the C–X, D–X, e–X, and d–X bands were assigned using our predictions, and these could be fed back into the MARVEL procedure. The SiOUVenIR line list was computed using published ab initio transition dipole moments for the E–X and A–X bands; the line list is suitable for temperatures up to 10 000 K and for wavelengths longer than 140 nm. SiOUVenIR is available from www.exomol.com and the CDS database.
| Type: | Article |
|---|---|
| Title: | ExoMol line lists - XLIV. IR and UV line list for silicon monoxide (SiO) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stab3267 |
| Publisher version: | https://doi.org/10.1093/mnras/stab3267 |
| Language: | English |
| Additional information: | © The Author(s) 2021. Published by Oxford University Press on behalf of The Royal Astronomical Society. 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, opacity, astronomical data bases: miscellaneous, planets and satellites: atmospheres, stars: low-mass |
| 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/10138612 |
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