ALMA detects a radial disk wind in DG Tauri

Aims: We aim to use the high spatial resolution of the Atacama Large Millimeter/submillimeter Array (ALMA) to map the flow pattern of molecular gas near DG Tauri and its disk, a young stellar object driving a jet and a molecular outflow. Methods: We use observations fromALMA in the J = 2-1 transition of 12CO, 13CO, andC18O to study the Keplerian disk of DG Tauri and outflows that may be related to the disk and the jet. Results: We find anew wind component flowing radially at a steep angle (≈25° from the vertical) above the disk with a velocity of ≈3.1 km s-1. It continues the trend of decreasing velocity for increasing distance from the jet axis ("onion-like velocity structure"). Conclusions: The new component is located close to the protostellar disk surface and may be related to photoevaporative winds. The reduced datacubes are only available at the CDS via anonymous ftp tohttp://cdsarc.u-strasbg.fr(ftp://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/620/L1