منابع مشابه
Spatially Resolved Molecular Hydrogen Emission in the Inner 200AU Environments of Classical T Tauri Stars
We present 2.0-2.4μm integral field spectroscopy at adaptive optics spatial resolution (∼0.”1) obtained with the Near-infrared Integral Field Spectrograph (NIFS) at Gemini North Observatory of six Classical T Tauri stars: T Tau, DG Tau, XZ Tau, HL Tau, RW Aur and HV Tau C. In all cases, the v=1-0 S(1) (2.12μm) emission is detected at spatially extended distances from the central stars. HL Tau, ...
متن کاملMagnetically modulated accretion in T Tauri stars
We examine how accretion on to T Tauri stars may be modulated by a time-dependent ‘magnetic gate’ where the inner edge of the accretion disc is disrupted by a varying stellar field. We show that magnetic field variations on time-scales ≪ 10 yr can modulate the accretion flow, thus providing a possible mechanism both for the marked photometric variability of T Tauri stars and for the possible co...
متن کاملA Hot Wind from the Classical T Tauri Stars: TW Hydrae and T Tauri
Spectroscopy of the infrared He I (λ10830) line with KECK/NIRSPEC and IRTF/CSHELL and of the ultraviolet C III (λ977) and O VI (λ1032) emission with FUSE reveals that the classical T Tauri star TW Hydrae exhibits P Cygni profiles, line asymmetries, and absorption indicative of a continuous, fast (∼400 km/s), hot (∼300,000 K) accelerating outflow with a mass loss rate ∼10–10 M⊙ yr −1 or larger. ...
متن کاملConstraining the Evolution of Molecular Gas in Weak-Line T-Tauri Stars 1. Motivation
The formation of planets from protoplanetary disks is greatly influenced by the presence or absence of gas in these disks. The mass and lifetime of gas in disks obviously constrains the mass and formation-time of gas-giant planets. Moreover, even trace amounts of gas can influence the evolutionary process of solid particles from submicron size to planetary sizes. A number of papers have recentl...
متن کاملRotating molecular outflows : the young T Tauri star in CB 26 ⋆
Context. The disk-outflow connection is thought to play a key role in extracting excess angular momentum from a forming proto-star. Though jet rotation has been observed in a few objects, no rotation of molecular outflows has been unambiguously reported so far. Aims. We report new millimeter-interferometric observations of the edge-on T Tauri star – disk system in the isolated Bok globule CB 26...
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ژورنال
عنوان ژورنال: Nature
سال: 1981
ISSN: 0028-0836,1476-4687
DOI: 10.1038/290014a0