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We determine the detection limits of the search for dwarf galaxies in thePan-Andromeda Archaeological Survey (PAndAS) using the algorithm developed bythe PAndAS team. The recovery fractions of artificial dwarf galaxies are, asexpected, a strong function of physical size and luminosity and, to a lesserextent, distance. We show that these recovery fractions vary strongly withlocation in the surveyed area because of varying levels of contamination fromboth the Milky Way foreground stars and the stellar halo of Andromeda. Wetherefore provide recovery fractions that are a function of size, luminosity,and location within the survey on a scale of 1 square degree. Overall, theeffective surface brightness for a 50-percent detection rate range between 28and 30 mag per square arcsecond. This is in line with expectations for a searchthat relies on photometric data that are as deep as the PAndAS survey. Thederived detection limits are an essential ingredient on the path toconstraining the global properties of Andromeda's system of satellite dwarfgalaxies and, more broadly, to provide constraints on dwarf galaxy formationand evolution in a cosmological context.

The PAndAS View of the Andromeda Satellite System. III. Dwarf galaxy detection limits