This article has an erratum: [https://doi.org/10.1051/0004-6361/201834271e]
Volume 620, December 2018
|Number of page(s)||7|
|Section||Letters to the Editor|
|Published online||23 November 2018|
Letter to the Editor
ALMA detects a radial disk wind in DG Tauri⋆
University of Vienna, Dept. of Astrophysics, Türkenschanzstr. 17, 1180 Vienna, Austria
2 Department of Astronomy, University of Geneva, Ch. d’Ecogia 16, 1290 Versoix, Switzerland
3 University of Hertfordshire, Hatfield, Hertfordshire, UK
4 University of Exeter, School of Physics and Astronomy, Stocker Road, Exeter EX4 4QL, UK
5 Kapteyn Astronomical Institute, University of Groningen, PO Box 800 9700 AV Groningen, The Netherlands
6 Hamburger Sternwarte, Gojenbergsweg 112, 21029 Hamburg, Germany
7 Center for Astrophysics and Space Astronomy, University of Colorado, 389 UCB, Boulder, CO 80309-0389, USA
8 Research Institute of Physics, Southern Federal University, Stachki Ave. 194, Rostov-on-Don, Russia
Accepted: 20 October 2018
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.
Key words: stars: pre-main sequence / stars: winds / outflows / protoplanetary disks
The reduced datacubes are only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (126.96.36.199) or via http://cdsarc.u-strasbg.fr/viz-bin/cat/J/A+A/620/L1
Note to the Reader: Following the publication of the corrigendum, the article was corrected on November 8, 2019.
© ESO 2018
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.