  In this erratum we report changes on the $D^0$ $p_T$ spectra and nuclear
modification factor ($R_{AA}$) in Au+Au collisions at
$\sqrt{s_{_{\mathrm{NN}}}}$ = 200 GeV by fixing the errors in the efficiency
and selection criteria that affected the Au+Au results. The p+p reference
spectrum has changed as well and is updated with new fragmentation parameters.
