Heavy Flavours in Atlas

ATLAS prepared a program for measurements of production cross sections both of b-hadrons and Onia in central proton-proton collisions. Dedicated triggers based on muon, di-muon or electron signatures are designed to accommodate large statistics with early data. After a few pb^-1 of 7TeV collision data have been taken at the LHC, ATLAS has been able to start probing the new energy regime with decays of the psi and Upsilon families of mesons into pairs of muons, the open charm and open beauty sector. In this talk, first measurements at 7 TeV of ATLAS will be shown for J/Ψ cross section measurement and non-prompt to prompt ratio, Y observation, first signals of D-mesons and observation of B± → J/ψ Κ±. Crucial to all of these measurements are the performance of the muon triggers and the offline muon reconstruction and identification, as well as the inner detector performance and tracking. In the second part, the perspectives for higher luminosity studies are presented including the long term perspectives, the di-muon strategis, the Onia production and polarization and finaly rare B-decays as an indirect search for new physics.