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 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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