Fluxes of the X-ray detected stars in our sample in the soft X-ray band and the WISE Wl infrared band, large red dots for eRASS detections, and small black dots for all X-ray detections. The statistical dividing line between objects of stellar and non-stellar nature (Salvato et al. 2018) is shown as the solid grey line. The only source that falls into the non-stellar part of the parameter space is an exoplanet-hosting cataclysmic variable.