SIMBAD references

2013MNRAS.436L..64A - Mon. Not. R. Astron. Soc., 436, L64-L68 (2013/November-3)

Subarcsecond high-sensitivity measurements of the DG Tau jet with e-MERLIN.

AINSWORTH R.E., RAY T.P., SCAIFE A.M.M., GREAVES J.S. and BESWICK R.J.

Abstract (from CDS):

We present very high spatial resolution deep radio continuum observations at 5GHz (6cm) made with the extended Multi-Element Radio Linked Interferometer Network (e-MERLIN) of the young stars DG Tau A and B. Assuming it is launched very close ( ≃ 1au) from the star, our results suggest that the DG Tau A outflow initially starts as a poorly focused wind and undergoes significant collimation farther along the jet ( ≃ 50au). We derive jet parameters for DG Tau A and find an initial jet opening angle of 86° within 2au of the source, a mass-loss rate of 1.5x10–8M/yr for the ionized component of the jet, and the total ejection-to-accretion ratio to range from 0.06 to 0.3. These results are in line with predictions from magnetohydrodynamic jet-launching theories.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): radiation mechanisms: general - stars: formation

Simbad objects: 8

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2020.01.19-17:18:21

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