University of Hertfordshire

From the same journal

From the same journal

By the same authors

ALMA detects a radial disk wind in DG Tau

Research output: Contribution to journalLetter

Documents

  • 1810.12251v1

    Accepted author manuscript, 10 MB, PDF-document

  • M. Guedel
  • C. Eibensteiner
  • O. Dionatos
  • M. Audard
  • J. Forbrich
  • S. Kraus
  • Ch Rab
  • Ch Schneider
  • S. Skinner
  • E. Vorobyov
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Original languageEnglish
JournalAstronomy & Astrophysics
Journal publication date20 Oct 2018
DOIs
StateAccepted/In press - 20 Oct 2018

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 Tau 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 Tau 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 deg from the vertical) above the disk with a velocity of ~ 3.1 km/s. 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.

Notes

Astronomy and Astrophysics Letters, in press, 8 pages

ID: 15610442