  Close-in extrasolar giant planets may be directly detectable by their
reflected light, due to the proximity of the planet to the illuminating star.
The spectrum of the system will contain a reflected light component that varies
in amplitude and Doppler shift as the planet orbits the star. Intensive
searches for this effect have been carried out for only one extrasolar planet
system, tau Boo. There exist several other attractive targets, including the
transiting planet system HD 209458.
