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These proceedings present directed flow ($v_1$) measurements in Au+Aucollisions from STAR's Beam Energy Scan (BES) program at the RelativisticHeavy-Ion Collider, for $p$, $\bar{p}$, $\Lambda$, $\bar\Lambda$, $K^\pm$,$K^0_S$ and $\pi^\pm$. At intermediate centrality, protons show a minimum indirected flow slope, $dv_1/dy\,|_{y\leq0.8}$, as a function of beam energy.Proton $dv_1/dy$ changes sign near 10 GeV, and the directed flow for $\Lambda$is consistent with the proton result. The directed flow slope for net protonsshows a clear minimum at 14.5 GeV and becomes positive at beam energies below10 GeV and above 30 GeV. New results for net-kaon directed flow slope resemblenet protons from high energy down to 14.5 GeV, but remain negative at lowerenergies. The slope $dv_1/dy$ shows a strong centrality dependence, especiallyfor $p$ and $\Lambda$ at the lower beam energies. Available model calculationsare in poor agreement.

Beam-Energy and Centrality Dependence of Directed Flow of Identified Particles