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We present the results from a wide-field spectroscopic survey of globularclusters (GCs) in the Virgo Cluster. We obtain spectra for 201 GCs and 55ultracompact dwarfs (UCDs) using the Hectospec on the Multiple MirrorTelescope, and derive their radial velocities. We identify 46 genuineintracluster GCs (IGCs), not associated with any Virgo galaxies, using the 3DGMM test on the spatial and radial velocity distribution.They are located atthe projected distance 200 kpc $\lesssim$ R $\lesssim$ 500 kpc from the centerof M87. The radial velocity distribution of these IGCs shows two peaks, one at$v_{\rm r}$ = 1023 km s$^{-1}$ associated with the Virgo main body, and anotherat $v_{\rm r}$ = 36 km s$^{-1}$ associated with the infalling structure. Thevelocity dispersion of the IGCs in the Virgo main body is $\sigma_{\rm{GC}}\sim$ 314 km s$^{-1}$, which is smoothly connected to the velocity dispersionprofile of M87 GCs, but much lower than that of dwarf galaxies in the samesurvey field, $\sigma_{\rm{dwarf}} \sim$ 608 km s$^{-1}$. The UCDs are morecentrally concentrated on massive galaxies, M87, M86, and M84. The radialvelocity dispersion of the UCD system is much smaller than that of dwarfgalaxies. Our results confirm the large-scale distribution of Virgo IGCsindicated by previous photometric surveys. The color distribution of theconfirmed IGCs shows a bimodality similar to that of M87 GCs. This indicatesthat most IGCs are stripped off from dwarf galaxies and some from massivegalaxies in the Virgo.

To the Edge of M87 and Beyond: Spectroscopy of Intracluster Globular Clusters and Ultra Compact Dwarfs in the Virgo Cluster