EDP Sciences
Free Access
Issue
A&A
Volume 394, Number 3, November II 2002
Page(s) L31 - L34
Section Letters
DOI https://doi.org/10.1051/0004-6361:20021380
Published online 21 October 2002


A&A 394, L31-L34 (2002)
DOI: 10.1051/0004-6361:20021380

Letter

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

L. Testi1, F. Bacciotti1, A. I. Sargent2, T. P. Ray3 and J. Eislöffel4

1  Osservatorio Astrofisico di Arcetri, INAF, Largo E. Fermi 5, 50125 Firenze, Italy
2  California Institute of Technology, MS 105-24, Pasadena, CA 91125, USA
3  Dublin Institute for Advanced Studies, 5 Merrion Square Dublin 2, Ireland
4  Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany

(Received 21 August 2002 / Accepted 20 September 2002 )

Abstract
We present high angular resolution millimeter wavelength continuum and 13CO(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  $M_\odot$ 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.


Key words: circumstellar matter -- jets and outflows -- stars: formation -- stars: individual: DG Tauri

Offprint request: L. Testi, lt@arcetri.astro.it

SIMBAD Objects



© ESO 2002

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.