Distribution of planetary masses (M_psini) with X-ray flux at the planet orbit. Filled symbols (squares for subgiants, circles for dwarfs) are XMM-Newton and Chandra data. Arrows indicate upper limits. Open symbols are ROSAT data without error bars. Diamonds represent Jupiter, Saturn, and the Earth. The dashed line marks the “erosion line” that might separate the phases of strong and weak evaporation (Paper I). Dotted lines indicate the X-ray flux of the younger Sun at 1 au.