Quarkonia Results from ATLAS

The inclusive J/Psi production cross-section and fraction of J/Psi produced in B-hadron decays are measured in proton-proton collisions at sqrt(s)=7 TeV with the ATLAS detector at the LHC, as a function of the transverse momentum and rapidity of the J/Psi. From the inclusive production cross-section and fraction of J/Psi produced in B-hadron decays, the differential production cross-sections of prompt and non- prompt J/Psi are determined separately. The Upsilon(1S) production cross-section is also measured. All results are compared to predictions from perturbative QCD calculations.