  We calculate elastic and non-elastic electromagnetic form factors for vector
and axial-vector mesons in the holographic D4-D8 brane model. We obtain the
mass spectrum and Regge trajectories for these particles. From the elastic form
factors we extract the electric radius, the magnetic and quadrupole moments.
Form factors for transverse and longitudinal polarizations are also obtained.
We find superconvergence sum rules for the vector and axial-vector meson
couplings that determine the asymptotic behavior of the form factors at large
momentum transfer. Our results show good agreement with other holographic
models and QCD.
