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)

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 10 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 1.644m, 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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