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We report evidence for dynamically significant rotation in the globularcluster systems of two luminous Virgo dwarf ellipticals, VCC1261 and VCC1528.Including previous results for VCC1087, the globular cluster systems of allthree Virgo dwarf ellipticals studied in detail to date exhibit v_rot/sigma >1. Taking the rotation seen in the globular clusters as maximal disk rotation,we find all three dEs lie on the r-band Tully-Fisher relation. We argue thatthese data support the hypothesis that luminous dEs are the remnants oftransformed disk galaxies. We also obtained deep, longslit data for the starsin VCC1261 and VCC1528. Both these galaxies show rapid rotation in their innerregions, with spatial scales of ~0.5 kpc. These rotation velocities are similarto those seen in the GC systems. Since our longslit data for Virgo dEs extendout to 1-2 effective radii (typical of deep observations), whereas the globularclusters extend out to 4--7 effective radii, we conclude that non-detections ofrotation in many luminous dEs may simply be due to a lack of radial coverage inthe stellar data, and that globular clusters represent singularly sensitiveprobes of the dynamics of dEs. Based on these data, we suggest that gas disksare significant sites of globular cluster formation in the early universe.

Evidence for the disky origin of luminous Virgo dwarf ellipticals from the kinematics of their globular cluster systems