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| Paper: |
The Bipolar X-Ray Jet of the Classical T Tauri Star DG Tau |
| Volume: |
448, 16th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun |
| Page: |
617 |
| Authors: |
Güdel, M.; Audard, M.; Bacciotti, F.; Bary, J. S.; Briggs, K. R.; Cabrit, S.; Carmona, A.; Codella, C.; Dougados, C.; Eislöffel, J.; Gueth, F.; Günther, H. M.; Herczeg, G.; Kundurthy, P.; Matt, S. P.; Mutel, R. L.; Ray, T.; Schmitt, J. H. M. M.; Schneider, P. C.; Skinner, S. L.; van Boekel, R. |
| Abstract: |
We report on new X-ray observations of the classical T Tauri star DG Tau.
DG Tau drives a collimated bi-polar jet known to be a source of X-ray emission
perhaps driven by internal shocks. The rather modest extinction permits
study of the jet system to distances very close to the star itself. Our initial
results presented here show that the spatially resolved X-ray jet has been moving
and fading during the past six years. In contrast, a stationary, very soft
source much closer (≈ 0.15–0.2″)
to the star but apparently also related to the jet has brightened
during the same period. We report accurate temperatures and absorption column
densities toward this source, which is probably associated with the jet
base or the jet collimation region. |
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