Recent heavy-flavour results from ATLAS

The ATLAS heavy-ion program utilizes heavy-flavor hadrons to probe the hot, dense matter formed at the LHC. Quarkonia measurements have been performed in pp, p+Pb and Pb+Pb systems to study medium effects. The Pb+Pb results show a strong suppression in more central events. Proton-lead interactions show little modification of the 1S charmonium state, but seem to indicate a centrality dependence of the 2S state. Upsilons have been studied in p+Pb and found to show only a modest suppression, and little centrality dependence. Inclusive muons with $p_T$ above 4GeV have been studied to provide insight on open-flavor production, and are found to be strongly suppressed in Pb+Pb collisions with a substantial and significant elliptic flow signal. Muon-hadron correlations have also been studied in the 2016 8 TeV p+Pb data. They show clear indications of a ridge effect, suggesting that similar mechanisms may be relevant for both the smaller and larger systems.