The evolution of the Tully-Fisher relation between z~2.3 and z~0.9 with
  KMOS^3D
  We investigate the stellar mass and baryonic mass Tully-Fisher relations
(TFRs) of massive star-forming disk galaxies at redshift z~2.3 and z~0.9 as
part of the KMOS^3D integral field spectroscopy survey. Our spatially resolved
data allow reliable modelling of individual galaxies, including the effect of
pressure support on the inferred gravitational potential. At fixed circular
velocity, we find higher baryonic masses and similar stellar masses at z~2.3 as
compared to z~0.9. Together with the decreasing gas-to-stellar mass ratios with
decreasing redshift, this implies that the contribution of dark matter to the
dynamical mass at the galaxy scale increases towards lower redshift. A
comparison to local relations reveals a negative evolution of the stellar and
baryonic TFR zero-points from z=0 to z~0.9, no evolution of the stellar TFR
zero-point from z~0.9 to z~2.3, and a positive evolution of the baryonic TFR
zero-point from z~0.9 to z~2.3. We discuss a toy model of disk galaxy evolution
to explain the observed, non-monotonic TFR evolution, taking into account the
empirically motivated redshift dependencies of galactic gas fractions, and of
the relative amount of baryons to dark matter on galaxy and halo scales.
