Data structures for photoabsorption within the ExoMol project

Abstract

The ExoMol database currently provides comprehensive line lists for modelling the spectroscopic properties of molecules in hot atmospheres. Extending the spectral range of the data provided to ultraviolet (UV) wavelengths brings into play three processes not currently accounted for in the ExoMol data structure, namely photodissociation, which is an important chemical process in its own right,the opacity contribution due to continuum absorption and predissociation which can lead to significant and observable line broadening effects. Data structures are proposed which will allow these processes to be correctly captured and the (strong) temperature-dependent effects predicted for UV molecular photoabsorption in general and photodissociation in particular to be represented.

arXiv commentThis version contains some minor corrections compared to the published version

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Cited by in corpus (3)

• Predissociation dynamics of the hydroxyl radical (OH) based on a five-state spectroscopic model
• Data availability and requirements relevant for the Ariel space mission and other exoplanet atmosphere applications
• PyExoCross: a Python program for generating spectra and cross-sections from molecular line lists