Figure 2 (IMAGE)

Kavli Institute for the Physics and Mathematics of the Universe

Figure 2

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Rotation curves of distant galaxies. Fei et al. data, in red and blue, remains relatively flat (i.e., high), similar to local massive disk galaxies at z~0 (dashed grey line) that need extended dark matter to explain their high velocities. The results from other galaxies at redshift~2-3 (in gray data points) show a rotation curve that decreases at the outskirts. This leads to a low dark matter fraction.

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Fei et al.

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