Synthetic [CII] spectra from galaxy Adenia. The spectrum shows an integrated luminosity of L_[CII] ≃ 1.7 × 10⁸ L_⊙ and full width at half maximum of ≃530 km s⁻¹. The line emission was computed from the simulated galaxy by using cell-by CLOUDY models (Ferland et al. 2017) accounting for the local interstellar radiation field, the gas properties (density, metallicity, proper motion, etc.), and the turbulent structure of molecular clouds (Vallini et al. 2018; Pallottini et al. 2019; Kohandel et al. 2019).