Protostars and Planets VI, Heidelberg, July 15-20, 2013
Poster 1K025
The Launch Region of the SVS13 Outflow
Hodapp, Klaus (University of Hawaii, Institute for Astronomy)
Abstract:
We present the results of Keck Telescope laser adaptive optics integral field spectroscopy with
OSIRIS of the innermost regions of the NGC1333 SVS13 jet that drives the system of Herbig-Haro
objects 7-11. We find a 0.4˝ long micro-jet traced by the emission of shock-excited [FeII]. Beyond
the extent of this jet, we find a series of near-spherical bubbles traced in the lower excitation H
2
1–0 S(1) line. While this most recent outflow activity is directed almost precisely (PA 170°) to the
south of SVS13, the older bubbles show a different direction of motion and orientation more
towards the south-east, connecting the recent outflow activity to the well-known, poorly
collimated HH 7-11 system of Herbig-Haro objects. We postulate that the creation of a series of
bubbles and the changes in outflow direction are indicative of a precessing disk. Our velocity-resolved observations of the microjet in the [FeII] emission line at 1.644µm, as well as the HI12-4
and 13-4 (Brackett series) emission lines originating from the accretion disk or jet launch region
clearly show the kinematic signature of disk and jet rotation.
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