  A measurement of the cross section for the production of an isolated photon
in association with jets in proton-proton collisions at a center-of-mass energy
sqrt(s) = 7 TeV is presented. Photons are reconstructed in the pseudorapidity
range |eta(gamma)|<1.37 and with a transverse energy E_T(gamma)>25 GeV. Jets
are reconstructed in the rapidity range |y(jet)|<4.4 and with a transverse
momentum p_T(jet)>20 GeV. The differential cross section dsigma/dE_T(gamma) is
measured, as a function of the photon transverse energy, for three different
rapidity ranges of the leading-p_T jet: |y(jet)|<1.2, 1.2<=|y(jet)|<2.8 and
2.8<=|y(jet)|< 4.4. For each rapidity configuration the same-sign
(eta(gamma)y(jet)>=0) and opposite-sign (eta(gamma)y(jet)<0) cases are studied
separately. The results are based on an integrated luminosity of 37 pb^-1,
collected with the ATLAS detector at the LHC. Next-to-leading order
perturbative QCD calculations are found to be in fair agreement with the data,
except for E_T(gamma)<~45 GeV, where the theoretical predictions overestimate
the measured cross sections.
