Pearce, Oliver;
Yurchenko, Sergei N;
Tennyson, Jonathan;
(2024)
ExoMol line lists – LII. Line Lists for the Methylidyne Cation (CH+).
Monthly Notices of the Royal Astronomical Society
, 527
(4)
pp. 10726-10736.
10.1093/mnras/stad3909.
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Abstract
Comprehensive and accurate rovibronic line lists for the X 1Σ+ and A 1Π states of 12C1H+ and 13C1H+ which should be applicable up to temperatures of 5000 K are presented. Available empirical potential energy curves and high-level ab initio dipole and transition dipole moment curves are used with the program LEVEL to compute rovibronic energy levels and Einstein A coefficients. Λ-doubling is incorporated into the energy levels and A-coefficients involving the A 1Π state using an empirical method. For 12C1H+, line positions are improved by using both laboratory and astronomical observational spectra as input to the MARVEL procedure. The 12C1H+ line list contains 1505 states and 34 194 transitions over the frequency range of 0 – 33 010 cm−1 (λ > 300 nm). Comparisons with observed astronomical and laboratory spectra give very good agreement. The PYT CH+ line lists and partition functions are available from the ExoMol database at www.exomol.com.
| Type: | Article |
|---|---|
| Title: | ExoMol line lists – LII. Line Lists for the Methylidyne Cation (CH+) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stad3909 |
| Publisher version: | http://dx.doi.org/10.1093/mnras/stad3909 |
| Language: | English |
| Additional information: | © 2023 The Author(s). Published by Oxford University Press on behalf of 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, exoplanets, planets and satellites: atmospheres, ISM: molecules |
| 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/10184712 |
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