ExoMol molecular line lists -- XLII: Rovibronic molecular line list for the low-lying states of NO

Abstract

An accurate line list, called XABC, is computed for nitric oxide which covers its pure rotational, vibrational and rovibronic spectra. A mixture of empirical and theoretical electronic transition dipole moments are used for the final calculation of ${}^{14}{\mathrm{N}}^{16}\mathrm{O}$ rovibronic $\mathrm{A}{}^2{\Sigma }^{+}$ -- $\mathrm{X}{}^2\Pi$, $\mathrm{B}{}^2\Pi$ -- ${\mathrm{X}}^2\Pi$ and $\mathrm{C}{}^2\Pi$ -- $\mathrm{X}{}^2\Pi$ which correspond to the $\gamma$, $\beta$ and $\delta$ band systems, respectively, as well as minor improvements to transitions within the $\mathrm{X}{}^2\Pi$ ground state. The work is a major update of the ExoMol NOname line list. It provides a high-accuracy NO ultraviolet line list covering the complicated regions where the $\mathrm{B}{}^2\Pi$-$\mathrm{C}{}^2\Pi$ states interact. XABC provides comprehensive data for the lowest four doublet states of NO in the region of $\lambda >160\mathrm{nm}$ ($\tilde{\nu }<63000{\mathrm{cm}}^{-1}$) for the analysis of atmospheric NO on Earth, Venus or Mars, other astronomical observations and applications. The data is available via www.exomol.com.

13 pages, 14 figures, 2 tables

References in corpus (4)

• The 2020 release of the ExoMol database: molecular line lists for exoplanet and other hot atmospheres
• Spectroscopic line parameters of NO, NO${}_2$, and N${}_2$O for the HITEMP database
• ExoMol Line List XXI: Nitric Oxide (NO)
• Terahertz spectroscopy of N${}^{18}$O and isotopic invariant fit of several nitric oxide isotopologs

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