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Fig. 17

image

Velocity profile for the O/B stars. The total velocity is plotted against the projected distance p to Sgr A*. Triangles denote fully known kinematics in three dimensions, squares denote only two-dimensional projected proper motion measurements and are therefore only lower limits of the total velocity. The colour-coding illustrates the normalised angular momentum . The full black line denotes the velocity profile for a central point mass with = 4.3 × 106M, the dashed line denotes the escape velocity ve for such a point mass. Red lines mean that we also consider a stellar mass .

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