Kavli Affiliate: David A. Principe
| First 5 Authors: Anastasiia V Uvarova, Hans Moritz Günther, David A. Principe, P. Christian Schneider,
Young stars accrete mass and angular momentum from their circumstellar disks.
Some of them also drive outflows, which can be distinguished in optical
forbidden emission lines (FELs). We analyze a sample of binary T Tauri stars
observed with long-slit spectroscopy by the Hubble Space Telescope (HST),
searching for spatially resolved outflows. We detect resolved [O I] emission in
two cases out of twenty one. In DF Tau we resolve high and medium velocity
outflows in a jet and counterjet out to 60 au. The outflows are accelerated
within the inner 12 au and retain a constant speed thereafter. In UY Aur, we
detect a blue- and a red-shifted outflow from UY Aur A, as well as a
blue-shifted jet from UY Aur B. All of these features have been seen in [Fe II] with data taken ten years apart indicating that the underlying outflow pattern
is stable on these timescales.
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