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We report on new X-ray observations of the classical T Tauri star DG Tau. DGTau drives a collimated bi-polar jet known to be a source of X-ray emissionperhaps driven by internal shocks. The rather modest extinction permits studyof the jet system to distances very close to the star itself. Our initialresults presented here show that the spatially resolved X-ray jet has beenmoving and fading during the past six years. In contrast, a stationary, verysoft source much closer (~ 0.15-0.2") to the star but apparently also relatedto the jet has brightened during the same period. We report accuratetemperatures and absorption column densities toward this source, which isprobably associated with the jet base or the jet collimation region.

The Bipolar X-Ray Jet of the Classical T Tauri Star DG Tau