SIMBAD references

2000A&A...356L..41L - Astronomy and Astrophysics, volume 356, L41-44 (2000/4-2)

DG Tau: A shocking jet.

LAVALLEY-FOUQUET C., CABRIT S. and DOUGADOS C.

Abstract (from CDS):

We present spectro-imaging observations of DG Tau at 0.5" resolution obtained with OASIS in [O I]λ6300, Hα, [N II]λ6583, and [S II]λλ6716,6731. The fast jet core appears wiggling and surrounded by a slower moving flow or cavity. Line ratios are compared with available predictions for heating mechanisms in T Tauri jets (shocks, ambipolar diffusion, turbulent mixing-layers). Shocks with speeds 50-100km/s increasing with flow velocity, and preshock densities 105-103cm–3 decreasing away from the star, are best able to reproduce the high level of excitation for velocities >100km/s.

Abstract Copyright:

Journal keyword(s): shock waves - stars: individual: DG Tau - stars: pre-main sequence - ISM: jets and outflows

Simbad objects: 6

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2020.09.29-20:17:27

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