Searching for Transiting Planets around AU Mic

AU Mic is a nearby, young (10-20 Myr), M-dwarf (M1Ve) star surrounded by a
resolved circumstellar debris disk.  The inner disk has an inclination of ~1
degree and its structure shows an inner disk clearing ~10 AU from the central
star.  Small-scale structure observed in the debris disk and the inner disk
clearing could be caused by a giant planet orbiting the star.  The edge-on
nature of the debris disk makes this object an ideal star in which to search
for transiting planets orbiting in the plane of the disk.

We have initiated a monitoring campaign using the CTIO-1m telescope designed to
detect transiting planets around AU Mic.  The observations have been carried
out over several weeks in 2005 and 2006.  The data were obtained in four
narrowband filters and have a sampling rate of less than one minute.  The
results and analysis of these observations will be discussed.