Ejection of a Low-Mass Star in a Young Stellar System in Taurus

@article{Loinard2003EjectionOA,
  title={Ejection of a Low-Mass Star in a Young Stellar System in Taurus},
  author={Laurent Loinard and Luis F. Rodr{\'i}guez and M{\'o}nica Rodr{\'i}guez},
  journal={The Astrophysical Journal},
  year={2003},
  volume={587}
}
We present the analysis of high angular resolution Very Large Array radio observations, made at 11 epochs over the last 20 years, of the multiple system T Tauri. One of the sources (Sb) in the system has moved at moderate speed (5-10 km s-1) on an apparently elliptical orbit during the first 15 yr of observations, but after a close (<2 AU) encounter with the source Sa, it appears to have accelerated westward to about 20 km s-1 in the last few years. Such a dramatic orbital change most probably… 

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References

SHOWING 1-10 OF 32 REFERENCES
Very Large Array Observations of Proper Motions in L1551 IRS 5
Using high angular resolution (~01) Very Large Array observations made at 2 cm during the period 1983 to 1998, we report the detection of proper motions in the components of the binary radio source
Very Large Array Observations of Proper Motions in YLW 15
Using high angular resolution (~03) Very Large Array (VLA) observations made at 3.6 cm during the period from 1990 to 2002, we report the detection of proper motions in the components of the binary
Large-scale magnetic fields in the outflow from the young stellar object T Tauri S
T Tauri stars are young stellar objects, similar in mass to the Sun, that are completing the transition between a collapsing cloud and a main-sequence star powered by hydrogen fusion1. Many of these
Orbital proper motions in the protobinary system L1527/IRAS 04368+2557?
Using high angular resolution 7 mm Very Large Array (VLA) observations, we show that the low-mass protostellar object IRAS 043682557 in L1527 is composed of two radio sources separated in projection
The Infrared Companions of T Tauri Stars
The infrared companions (IRCs) associated with several normal low-mass pre-main-sequence (T Tauri) stars pose an interesting problem for theories of binary star formation. The IRCs have very low
A Deep Long-Slit Spectroscopic Study of the Two Bipolar Outflows from the T Tauri Binary System
We present results of a new deep, high-resolution, long-slit spectroscopic study of the extended nebular line emission around the young binary T Tauri. The deduced position-velocity diagrams of the
The Origin of Runaway Stars
Milliarcsecond astrometry provided by Hipparcos and by radio observations makes it possible to retrace the orbits of some of the nearest runaway stars and pulsars to determine their site of origin.
Disintegrating Multiple Systems in Early Stellar Evolution
An analysis of the multiplicity of 14 sources driving giant Herbig-Haro flows has revealed an observed binary frequency between 79% and 86%, of which half are higher order multiples. These sources
Resolved Near-Infrared Spectroscopy of the Mysterious Pre-Main-Sequence Binary System T Tauri S
We obtained new near-infrared images of the prototypical pre-main-sequence triple system T Tau, as well as the first resolved medium-resolution spectra of the close pair T Tau S. At the time of our
The enigmatic T Tauri radio source
We have analyzed eight high angular resolution images of the prototype low mass pre-main-sequence star T Tauri obtained with the Very Large Array between 1987 and 1990. Our objectives were to confirm
...
1
2
3
4
...