Locating the Launching Region of T Tauri Winds: The Case of DG Tau

Abstract

It is widely believed that T Tauri winds are driven magnetocentrifugally from accretion disks close to the central stars. The exact launching conditions are uncertain. We show that a general relation exists between the poloidal and toroidal velocity components of a magnetocentrifugal wind at large distances and the rotation rate of the launching surface, independent of the uncertain launching conditions. We discuss the physical basis of this relation and verify it using a set of numerically-determined large-scale wind solutions. Both velocity components are in principle measurable from spatially resolved spectra, as has been done for the extended low-velocity component (LVC) of the DG Tau wind by Bacciotti et al. For this particular source, we infer that the spatially resolved LVC originates from a region on the disk extending from $\sim 0.3$ to $\sim 4.0\AU$ from the star, which is consistent with, and a refinement over, the previous rough estimate of Bacciotti et al.

11 pages, 1 figure, submitted to Astrophysical Journal Letters

References in corpus (4)

• HST/STIS Spectroscopy of the Optical Outflow from DG Tau: Indications for Rotation in the Initial Jet Channel
• HST/STIS spectroscopy of the optical outflow from DG Tau: structure and kinematics on sub-arcsecond scales
• Magneto-Centrifugal Launching of Jets from Accretion Disks. I: Cold Axisymmetric Flows
• The kinematic relationship between disk and jet in the DG Tauri system

Cited by in corpus (122)

• Theory of Star Formation
• Which jet launching mechanism(s) in TTauri stars?
• Accretion-powered Stellar Winds as a Solution to the Stellar Angular Momentum Problem
• Kinematics of the jet in M87 on scales of 100 -- 1000 Schwarzschild radii
• Photoevaporation of Circumstellar Disks around Young Stars
• Rotation of Jets from Young Stars: New Clues from the Hubble Space Telescope Imaging Spectrograph
• Accretion-Powered Stellar Winds II: Numerical Solutions for Stellar Wind Torques
• Resolved images of a protostellar outflow launched by an extended disk wind
• Global Evolution of an Accretion Disk with Net Vertical Field: Coronal Accretion, Flux Transport, and Disk Winds
• Further Indications of Jet Rotation in New Ultraviolet and Optical HST/STIS Spectra
• Disk-Driven Rotating Bipolar Outflow in Orion Source I
• Radio Jets from Young Stellar Objects
• The spin of accreting stars: dependence on magnetic coupling to the disc
• Wind-driven Accretion in Protoplanetary Disks --- II: Radial Dependence and Global Picture
• Molecule survival in magnetized protostellar disk winds. I. Chemical model and first results
• ALMA discovery of a rotating SO/SO${}_2$ flow in HH212. A possible MHD disk wind?
• Jet rotation: launching region, angular momentum balance and magnetic properties in the bipolar outflow from RW Aur
• Magnetic Fields in Astrophysical Jets: From Launch to Termination
• Rotation and Outflow motions in the very low-mass Class 0 protostellar system HH 211 at subarcsecond resolution
• Predicted rotation signatures in MHD disc winds and comparison to DG Tau observations
• The Origins of Fluorescent H2 Emission From T Tauri~Stars
• The Role of Magnetic Fields in Protostellar Outflows and Star Formation
• Molecular jets from low-mass young protostellar objects
• ALMA reveals a large structured disk and nested rotating outflows in DG Tau B
• Rotating molecular outflows: the young T Tauri star in CB26
• Plateau de Bure Interferometer Observations of the Disk and Outflow of HH30
• Submillimeter arcsecond-resolution mapping of the highly collimated protostellar jet HH 211
• An Exoplanet's Response to Anisotropic Stellar Mass-Loss During Birth and Death
• Evidence for an X-Ray Jet in DG Tau A?
• Bipolar jets launched from magnetically diffusive accretion disks. I. Ejection efficiency vs field strength and diffusivity
• A Critical Examination of the X-Wind Model for Chondrule and Calcium-rich, Aluminum-rich Inclusion Formation and Radionuclide Production
• Jets from Young Stars
• X-rays from jet-driving protostars and T Tauri stars
• Controlling the collimation and rotation of hydromagnetic disk winds
• Modeling the Halpha line emission around classical T Tauri stars using magnetospheric accretion and disk wind models
• The Structure of Magnetocentrifugal Winds I. Steady Mass Loading
• Can Protostellar Jets Drive Supersonic Turbulence in Molecular Clouds?
• Magnetic Fields in Stellar Jets
• Rotation in the NGC 1333 IRAS 4C Outflow
• Subaru IR Echelle Spectroscopy of Herbig-Haro Driving Sources I. H_2 and [Fe II] Emission
• A 100 au-Wide Bipolar Rotating Shell Emanating From The HH 212Protostellar Disk: A Disk Wind?
• Solar System Physics for Exoplanet Research
• ALMA Cycle 1 Observations of the HH46/47 Molecular Outflow: Structure, Entrainment and Core Impact
• The nature of the soft X-ray source in DG Tau
• Rings and gaps produced by variable magnetic disk winds and avalanche accretion streams: I. Axisymmetric resistive MHD simulations
• Constraining MHD disk winds with ALMA. Apparent rotation signatures and application to HH212
• Jet formation from massive young stars: Magnetohydrodynamics versus radiation pressure
• Origin of the wide-angle hot H2 in DG Tauri: New insight from SINFONI spectro-imaging
• Observation of rotation in star forming regions: clouds, cores, disks, and jets
• The influence of spin on jet power in neutron star X-ray binaries
• Kinematics around the B335 protostar down to au scales
• Investigating the transport of angular momentum from young stellar objects: do H2 jets from Class I YSOs rotate?
• Physical properties of the jet from DG Tauri on sub-arcsecond scales with HST/STIS
• Molecule formation in dust-poor irradiated jets I. Stationary disk winds
• High SiO abundance in the HH212 protostellar jet
• Kinematics of the Outflow From The Young Star DG Tau B: Rotation in the vicinities of an optical jet
• An extensive numerical survey of the correlation between outflow dynamics and accretion disk magnetization
• Molecules with ALMA at Planet-forming Scales (MAPS) XVI: Characterizing the impact of the molecular wind on the evolution of the HD 163296 system
• A rotating molecular jet in Orion
• The counterjet of HH 30: new light on its binary driving source
• A Search for Consistent Jet and Disk Rotation Signatures in RY Tau
• Modeling the CO outflow in DG Tau B: Swept-up shells versus perturbed MHD disk wind
• A rotating molecular jet from a Perseus protostar
• Jet rotation investigated in the near-ultraviolet with HST/STIS
• CALYPSO view of SVS 13A with PdBI: Multiple jet sources
• Interaction of young stellar object jets with their accretion disk
• A Unified Model for Bipolar Outflows from Young Stars: Kinematic Signatures of Jets, Winds, and Their Magnetic Interplay with the Ambient Toroids
• FAUST III. Misaligned rotations of the envelope, outflow, and disks in the multiple protostellar system of VLA 1623$-$2417
• Multi-epoch Sub-arcsecond [Fe II] Spectroimaging of the DG Tau Outflows with NIFS. I. First data epoch
• Revealing the fastest component of the DG Tau outflow through X-rays
• Two-component jet simulations: II. Combining analytical disk and stellar MHD outflow solutions
• ALMA resolves the remarkable molecular jet and rotating wind in the extremely radio-quiet galaxy NGC 1377
• JWST study of the DG Tau B disk wind candidate: I -- Overview and Nested H${}_2$/CO outflows
• The structure of jets launched from post-AGB binary systems
• Time Variability of Emission Lines for Four Active T Tauri Stars (I): October--December in 2010
• Rotation of the NGC 1333 IRAS 4A2 Protostellar Jet
• Confronting 3 Dimensional Time-dependent Jet Simulations with HST Observations
• ALMA observations of the Th 28 protostellar disk - A new example of counter-rotation between disk and optical jet
• Rotating Bullets from A Variable Protostar
• Do we need non-ideal magnetohydrodynamics to model protostellar discs?
• HST FUV imaging of DG Tau: Fluorescent molecular hydrogen emission from the wide angle outflow
• Jet rotation driven by MHD shocks in helical magnetic fields
• Nonradial and nonpolytropic astrophysical outflows IX. Modeling T Tauri jets with a low mass-accretion rate
• Disc wind models for FU Ori objects
• Multi-epoch Sub-arcsecond [Fe II] Spectroimaging of the DG Tau Outflows with NIFS. II. On the Nature of the Bipolar Outflow Asymmetry
• On the magnetic flux problem in star formation
• Launching the asymmetric bipolar jet of DO Tau
• Centrifugally driven winds from protostellar accretion discs. I - Formulation and initial results
• ALMA view of the L1448-mm protostellar system on disk scales: CH${}_3$OH and H${}^{13}$CN as new disk wind tracers
• Hot methanol from the inner region of the HH 212 protostellar system
• FERIA: Flat Envelope Model with Rotation and Infall under Angular Momentum Conservation
• On fan-shaped cold MHD winds from Keplerian accretion discs
• Numerical simulations of MHD jets from Keplerian accretion disks I-Recollimation shocks
• Global asymptotic solutions for non-relativistic MHD jets and winds
• Tracing the origins of permitted emission lines in RU Lupi down to AU scales
• Hydrodynamical simulations of the jet in the symbiotic star MWC 560 III. Application to X-ray jets in symbiotic stars
• Transverse velocity shifts in protostellar jets: rotation or velocity asymmetries?
• Nonradial and nonpolytropic astrophysical outflows. X. Relativistic MHD rotating spine jets in Kerr metric
• A resolved rotating disk wind from a young T Tauri star in the Bok globule CB26
• Spontaneous Formation of Outflows Powered by Rotating Magnetized Accretion Flows in a Galactic Center
• ALMA observations and modeling of the rotating outflow in Orion Source I
• Dead zones in protostellar discs: the case of Jet Emitting Discs
• A disk-wind driving the rotating molecular outflow in CB 26
• Structure of the Source I disk in Orion-KL
• Angular momentum in bipolar outflows: dynamical evolutionary model
• ALMA chemical survey of disk-outflow sources in Taurus (ALMA-DOT) VII: the layered molecular outflow from HL Tau and its relationship with the ringed disk
• A kinematical study of the launching region of the blueshifted HH 46/47 outflow with SINFONI K-band observations
• Revealing multiple nested molecular outflows with rotating signatures in HH270mms1-A with ALMA
• Low energy core collapse supernovae in the frame of the jittering jets explosion mechanism
• Testing photoevaporation and MHD disk wind models through future high-angular resolution radio observations: the case of TW Hydrae
• Comparison of synthetic maps from truncated jet-formation models with YSO jet observations
• A pair of gigantic bipolar dust jets close to the solar system
• Principal Component Analysis of computed emission lines from proto-stellar jets
• A twin-jet structure rather than jet-rotation in the young stellar object OMC 2/FIR 6b
• Two-flow magnetohydrodynamical jets around young stellar objects
• ALMA discovery of a dual dense probably rotating outflow from a massive young stellar object G18.88MME
• FAUST XXV. A potential new molecular outflow in [BHB2007] 11
• Jets in Low-Mass Protostars
• Rotating Motion of the Outflow of IRAS 16293-2422 A1 at its Origin Point near the Protostar
• Exploring the 100 au Scale Structure of the Protobinary System NGC 2264 CMM3 with ALMA
• Comparison of synthetic maps from truncated jet-formation models with YSO jet observations. II. The effect of varying inclinations
• Super-fast Rotation in the OMC 2/FIR 6b Jet