Measurements of vector boson plus jets from ATLAS

Measurements of single W, Z boson production in association with jets probe QCD in multi-scale environment. Measurements of W+jet and Z+ jet production and their ratio, extending to high jet multiplicities, and studying a large set of kinematic distributions are presented for 7 TeV data. The results are compared to the predictions of modern Monte Carlo generators. Production of vector bosons plus heavy flavors studies c and b quark parton distribution functions (PDFs) and gluon splitting effects. Measurements of W + c and Z + b(b) are reported and compared to predictions based on various PDFs in 4 and 5 flavour schemes. An overview of the results is given.