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arXiv · 2306.04524

ExoMol line lists -- L: High-resolution line lists of H$_3^+$, H$_2$D$^+$, D$_2$H$^+$ and D$_3^+$

Charles A. Bowesman·Irina I. Mizus·Nikolay F. Zobov·Oleg L. Polyansky·Janos Sarka·Bill Poirier·Marco Pezzella·Sergei N. Yurchenko·Jonathan Tennyson
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Abstract

New MiZo line lists are presented for the D$_2$H$^+$ and D$_3^+$ isotopologues of H$_3^+$. These line lists plus the existing H$_3^+$ MiZATeP and the Sochi H$_2$D$^+$ line lists are updated using empirical energy levels generated using the MARVEL procedure for H$_3^+$, H$_2$D$^+$ and D$_2$H$^+$, and effective Hamiltonian energies for D$_3^+$ for which there is significantly less laboratory data available. These updates allow accurate frequencies for far infrared lines for these species to be predicted. Assignments of the energy levels of H$_3^+$ and D$_3^+$ are extended using a combination of high accuracy variational calculations and analysis of transition intensities. All line lists are made available via www.exomol.com.

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Charles A. Bowesman, Irina I. Mizus, Nikolay F. Zobov, Oleg L. Polyansky, Janos Sarka, Bill Poirier, Marco Pezzella, Sergei N. Yurchenko, Jonathan Tennyson. 2023-06-07. ExoMol line lists -- L: High-resolution line lists of H$_3^+$, H$_2$D$^+$, D$_2$H$^+$ and D$_3^+$. https://doi.org/10.1093/mnras%2Fstad050

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