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It was recently proposed that the globular cluster system of the very lowsurface-brightness galaxy NGC1052-DF2 is dynamically very cold, leading to theconclusion that this dwarf galaxy has little or no dark matter. Here, we showthat a robust statistical measure of the velocity dispersion of the tracerglobular clusters implies a mundane velocity dispersion and a poorlyconstrained mass-to-light ratio. Models that include the possibility that someof the tracers are field contaminants do not yield a more constraininginference. We derive only a weak constraint on the mass-to-light ratio of thesystem within the half-light radius (M/L_V<6.7 at the 90% confidence level) orwithin the radius of the furthest tracer (M/L_V<8.1 at the 90% confidencelevel). This limit may imply a mass-to-light ratio on the low end for a dwarfgalaxy but many Local Group dwarf galaxies fall well within this contraint.With this study, we emphasize the need to reliably account for measurementuncertainties and to stay as close as possible to the data when determiningdynamical masses from very small data sets of tracers.

Current velocity data on dwarf galaxy NGC1052-DF2 do not constrain it to lack dark matter