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Published October 21, 2002 | Published + Accepted Version
Journal Article Open

The kinematic relationship between disk and jet in the DG Tauri system


We present high angular resolution millimeter wavelength continuum and ^(13)CO(2-1) observations of the circumstellar disk surrounding the T Tauri star DG Tauri. We show that the velocity pattern in the inner regions of the disk is consistent with Keplerian rotation about a central 0.67 M_⊙ star. The disk rotation is also consistent with the toroidal velocity pattern in the initial channel of the optical jet, as inferred from HST spectra of the first de-projected 100 AU from the source. Our observations support the tight relationship between disk and jet kinematics postulated by the popular magneto-centrifugal models for jet formation and collimation.

Additional Information

© 2002 ESO. Received: 21 August 2002. Accepted: 20 September 2002. The OVRO mm array is supported by NSF grant AST-99-81546, research on young stars and disks is also supported by the Norris Planetary Origins Project and NASA Origins of Solar Systems program (grant NAG5-9530). We thank the referee, Chris Davis, for comments that improved the presentation of our results.

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August 19, 2023
October 18, 2023