$\Upsilon $production in p+p, d+Au, Au+Au collisions at $\sqrt {S_{NN} } =$200 GeV in STAR

The properties of the dense matter produced in heavy-ion collisions can be investigated by studying its effect on quarkonia production. In particular, the $\Upsilon $states are of interest because both the effect due to co-movers and feed down is smaller than for J/$\psi $. Suppression of quarkonia is theorized to be a QGP signature due to the Debye color screening of the potential between the heavy quarks. Lattice studies show that a sequential suppression of quarkonia states in heavy ion collisions when compared to production in p+p collisions can provide us with a thermometer for the matter produced in relativistic heavy-ion collisions. This requires a detailed understanding of $\Upsilon $production in p+p collisions, as well as d+Au calculations so that R$_{AA}$ can determined. We will present our preliminary results for mid-rapidty $\Upsilon $production in p+p, d+Au, and Au+Au at $\sqrt {S_{NN} } =$200 GeV in the STAR experiment. We will compare these results with theoretical QCD calculations.