Structure and spectra of exemplary clouds simulated with CLOUDY at constant density (green and black), and constant pressure (red and orange), with different values of V_turb, assuming similar physical parameters. The ionizing flux was assumed logΦ(H) = 20 cm⁻² s⁻¹ for all clouds, and metallicity is assumed solar. Clouds in conditions of constant density have density fixed at log n_H = 11 cm⁻³, while in case of constant pressure log(P_tot) = 16 cm⁻³ K. Top left: Cloud temperature profile in logarithmic scale as a function of depth (z) of the cloud. Top right: Cloud density profile in logarithmic scale as a function of depth (z) of the cloud. Bottom: Spectra of Fe II emission from different models, displayed with 100% covering factor. Each synthetic spectrum is broadened with a Gaussian kernel with FWHM = 2500 km s⁻¹.