Optimistic (top left, B1) with its zoom-in on the solar region (top right, heliocentric coordinates), intermediate (bottom left, C1), and pessimistic (bottom right, A1) scenarios. Each plot shows the location of the binaryWD system with a planetary companion (red) and BD (green) detection through GWs. In each panel we also plot the known detected exoplanets’s host-star (see legend for colour scheme; data from https:// exoplanetarchive.ipac.caltech.edu). We note that data overlay a face-on black and white image of the Milky Way for Galactic location reference purposes.