AGN and stellar spectra used to produce model molecular emission lines

Aiming to investigate the effects of stellar and AGN radiation fields to the excitation of molecular gas, we present an analysis of model CO, H2O, and OH+ emission lines produced with the application of these radiation fields using MOLPOP-CEP. We find that the ratios of CO(Jupp) = 11, 12, 13, 14, 15) to CO(Jupp) = 1, 2, 3, 4, 5, 6, 7, 8) obtained with the application of AGN radiation are larger than the ones produced by applying stellar radiation. Similarly, some H2O and OH+ ratios obtained with AGN radiation are found to be higher than the corresponding ratios produced by applying stellar radiation field, making the line ratios a diagnostic tool to disentangle AGN from star formation. In all cases, we find that the ratios vary as a function of the molecular gas density and the scale of the radiation field, the larger the scale of the radiation field is the stronger the excitation of the molecular transitions. Also, the effect of the radiation fields is found to be dependent on the mole..., The AGN SED data was taken from the CLOUDY documentation, whereas the sythentic stellar SED was produced by using the starburst99 code based on the assumption discussed in our paper., , # AGN and Stellar SED

Give a brief summary of dataset contents, contextualized in experimental procedures and results.

## Description of the data and file structure

We used the following spectra to represent external (AGN and stellar) radiation fields when generating model molecular emission lines.
\-- The AGN SED named AGN_rad_CLOUDY.sed is taken from the CLOUDY documentation (Ferland G. J., 2017, The 2017 Release of Cloudy, [arXiv:1705.10877](https://ui.adsabs.harvard.edu/link_gateway/2017RMxAA..53..385F/arxiv:1705.10877), DOI: [10.48550/arXiv.1705.10877](https://ui.adsabs.harvard.edu/link_gateway/2017RMxAA..53..385F/doi:10.48550/arXiv.1705.10877)) .
\-- The synthetic stellar radiation spectrum named Stellar_rad.stb99 is generated using the starburst99 code ( Leitherer Claus, 1999, Starburst99: Synthesis Models for Galaxies with Active Star Formation, [arXiv:astro-ph/9902334](https://ui.adsabs.harvard.edu/link_gateway/1999ApJS..123....3L/arxiv:astro-ph/9902334), DOI: [10.1086/313...