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We construct a Galacto-Local Group rotation curve, combining the Galacticrotation curve with a diagram, where galacto-centric radial velocities of outerglobular clusters and member galaxies of the Local Group are plotted againsttheir galacto-centric distances. The high-velocity ends of this pseudo rotationcurve within a radius R ~ 150 kpc are well traced by a rotation curvecalculated for the NFW (Navaro, Frenk, White) and Burkert dark halo models. TheNFW model indicates that the Galaxy's mass within 385 kpc, half distance toM31, is ~ 4 x 10^{11}M_{sun}. High-velocity ends of the pseudo rotation curvefor the entire Local Group up to 1.5 Mpc indicate isothermal nature with aterminal velocity of ~ 200 km/s. In order for the Local Group to begravitationally bound, an order of magnitude larger mass than those of theGalaxy and M31 is required. This fact indicates that the Local Group containsdark matter of mass ~ 5 x 10^{12}M_{sun} filling the space between the Galaxyand M31. The mass density of the Galactic dark halo becomes equal to that ofthe Local Group's dark matter at R ~ 100 kpc, beyond which the intraclusterdark matter dominates. If we define the Galaxy's radius at this distance, theenclosed Galactic mass is ~ 3 x 10^{11}M_{sun}. We comment on the barionicmatter fraction of galaxies in the Local Group.

Pseudo Rotation Curve connecting the Galaxy, Dark Halo, and Local Group