2013MNRAS.436L..64A


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.20CET02:25:30

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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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HH 159 HH 04 27 02.0 +26 05 42           ~ 13 1
2 NAME DG Tau B Y*O 04 27 02.666 +26 05 30.38           ~ 128 1
3 V* DG Tau TT* 04 27 04.6913654419 +26 06 16.041555299 13.57 13.97 10.50 12.28   K6Ve 913 1
4 QSO J0429+2724 QSO 04 29 52.96076804 +27 24 37.8762939   18.6       ~ 26 0
5 NAME Taurus Dark Cloud SFR 04 41.0 +25 52           ~ 3374 0
6 7C 055201.39+394824.00 QSO 05 55 30.80561150 +39 48 49.1649664     18.0 17.5   ~ 459 2
7 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3659 1
8 QSO B1404+286 BLL 14 07 00.3933203928 +28 27 14.695133019   16.13 15.35 10.29   ~ 664 2

    Equat.    Gal    SGal    Ecl

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2020.02.20-02:25:30

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