Measurements of vector boson plus jets from ATLAS

Measurements of single W,Z boson production in association with jets probes QCD in multi­scale environment. Measurements of W+jet and Z+jet production and their ratio, extending to high jet multiplicities and studying 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 flavours studies c and b­quark 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 5­flavour schemes. An overview of the results is given.