Can planets survive stellar evolution?

We study the survival of gas planets around stars with masses in the range 1-5M(circle dot), as these stars evolve off the main sequence. We show that planets with masses smaller than one Jupiter mass do not survive the planetary nebula phase if located initially at orbital distances smaller than 3-5 AU. Planets more massive than two Jupiter masses around low-mass (1 M-circle dot on the main sequence) stars survive the planetary nebula stage down to orbital distances of similar to 3 AU. As the star evolves through the planetary nebula phase, an evaporation outflow will be established at the planet's surface. Evaporating planets may be detected using spectroscopic observations. Planets around white dwarfs with masses MWD greater than or similar to 0.7 M-circle dot are generally expected to be found at orbital radii r greater than or similar to 15 AU. If gas planets are found at smaller orbital radii around massive white dwarfs, they had to form as the result of the merger of two white dwarfs.