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ALMA detects a radial disk wind in DG Tauri

Year: 2018
Type: article
Abstract: 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 from ALMA in the J = 2 − 1 transition of 12CO, 13CO, and C18O to study the Keplerian disk of DG Tauri and outflows that may be related to the disk and the jet. Results. We find a new 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.
DOI: 10.1051/0004-6361/201834271
Authors: M. Güdel, C. Eibensteiner, O. Dionatos, M. Audard, J. Forbrich, S. Kraus, Ch. Rab, Ch. Schneider, S. Skinner, E. Vorobyov
Institutions: University of Vienna, University of Geneva, University of Hertfordshire, University of Exeter, University of Groningen, Universität Hamburg, University of Colorado Boulder, Southern Federal University
Language: English
Open Access status: green
Funders: National Science Foundation, National Radio Astronomy Observatory, European Space Agency, National Science Council, Korea Astronomy and Space Science Institute, National Astronomical Observatory of Japan, National Institutes of Natural Sciences
OpenAlex ID: W2898089589
FWCI: 1.069
Cites: 28
Cited by: 31
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