FIG. 4.
The top panel shows the absorption cross sections for the gases included in our spectral model. The middle and bottom panels show the simulated spectra for a simulation of a planet with 30 MDF Sorg orbiting AD Leo. The black line shows the full model spectrum, including the influence of all the gases in our line-by-line radiative transfer model. The colored lines show model spectra in which one gas is removed from the line-by-line radiative transfer model, with lines of the same color showing the absorption cross-section spectrum for that gas in the top pane. For example, the gray line shows the spectrum with the radiative influence of H2O removed from the model. The bottom panel shows a zoom-in on the “infrared window” between 8.5 and 11 μm.