  The production of a $Z$ boson and a photon in association with a high-mass
dijet system is studied using 20.2fb$^{-1}$ of proton-proton collision data at
a centre-of-mass energy of $\sqrt{s}$ = 8 TeV recorded with the ATLAS detector
in 2012 at the Large Hadron Collider. Final states with a photon and a Z boson
decaying into a pair of either electrons, muons, or neutrinos are analysed.
Electroweak and total $pp \to Z\gamma j j$ cross-sections are extracted in two
fiducial regions with different sensitivities to electroweak production
processes. Quartic couplings of vector bosons are studied in regions of phase
space with an enhanced contribution from pure electroweak production, sensitive
to vector-boson scattering processes $VV \to Z\gamma$. No deviations from
Standard Model predictions are observed and constraints are placed on anomalous
couplings parameterized by higher-dimensional operators using effective field
theory.
