A Study of the Infrared Emission Line Structure of HH 7-11 with Hubble and Spitzer

We present new Hubble Space Telescope (HST) observations of the HH 7-11 outflow region of the star formation region NGC1333 in three emission lines: 1.64 micron and 1.26 micron [Fe II], and 1.28 micron H I Paschen Beta. This, along with additional data from HST, the Spitzer Space Telescope, and the United Kingdom Infrared Telescope, allows for new morphological arguments, both high resolution and larger scale structure, including evidence of a counterflow on the opposite side of source star SVS 13 in Spitzer H2 lines. In addition, the two [Fe II] lines are from the same upper state, and thus we use them to find the extinction towards this object, which is used to deredden emission lines to create a more accurate representation of the region. We also use the shock simulation program MAPPINGS V to find initial parameters of this outflow and the shocks it forms and determine the amount of energy and momentum being deposited from this shock into the cloud.