FIG. 8.
Contours of summed absorbed stellar irradiation and tidal heating (in logarithmic units of W/m2) as a function of semimajor axis aps and eccentricity eps on an Earth-like (upper row) and a Super-Ganymede (lower row) exomoon. In the left panels, the satellite orbits a Jupiter-like planet, in the right panels a Neptune-mass planet, in both cases at 1 AU from a Sun-like host star. In the white area at the right, tidal heating is negligible and absorbed stellar flux is 239 W/m2. The right-most contours in each panel indicate Io's tidal heat flux of 2 W/m2, a tidal heating of 10 W/m2, and the critical flux for the runaway greenhouse (295 W/m2 for the Earth-like moon and 243 W/m2 for the Super-Ganymede). Positions of some massive satellites in the Solar System are shown for comparison. Color images available online at www.liebertonline.com/ast