Measurement of intrinsic top quark properties with the ATLAS detector

Several measurements of intrinsic top quark properties performed with the ATLAS detector are\npresented: mass, charge, polarisation of the top quark and of the W boson originating from its\ndecay in order to test the structure of the Wtb vertex, as well as a search for top quark decays\nvia flavour changing neutral currents. The results are based on up to 4.7 fb-1 of data collected\nat the LHC in 2011 at a centre-of-mass energy of 7 TeV. Most measurements exploit the high\nstatistics and low background level in the single lepton and dilepton channels and they require a\nfull reconstruction of the event kinematics.