Detectability conditions for the Roman-accessible exoplanets. In each left panel, the solid black lines in the F_p ∕F_⋆ -Δθ diagram correspond to independent orbital realizations. For the sake of clarity, only 1000 of the total 10 000 realizations are shown. Horizontal dashed lines indicate C_min and vertical dashed lines show the IWA and OWA of the CGI at λ = 575 nm for the optimistic (green), intermediate (yellow), and pessimistic (red) configurations (Table 1). Regions in green are the detectability windows in the optimistic CGI configuration at this wavelength, and the green histograms in the right panels show the posterior distributions of α_obs for this scenario.