Physics
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40511l&link_type=abstract
Spitzer Proposal ID #40511
Physics
Scientific paper
We propose to obtain Spitzer IRS spectral maps of the jet associated with the NGC 2264 G outflow. Our analysis of Spitzer IRAC observations revealed the jet to continuously extend along the entire (~1 pc) length of the redshifted lobe of this very young and highly collimated CO outflow (Teixeira et al., 2007). We found the jet to undergo multiple changes in direction as a result of either precession or deflection. We intend to use the proposed IRS observations in conjunction with shock models to quantitatively evaluate how the physical conditions (temperature, column density, ionization) vary along the jet. In doing so we hope to test the hypothesis that the narrow jet we observed in the IRAC images has sufficient energy and momentum to both broaden and drive the molecular outflow. The second goal of this proposal is to obtain detailed mid-infrared diagnostics of the Class 0 driving source of the outflow, VLA2, and a nearby Class I source, VLA1 which is not driving an outflow. These two protostars have formed under similar conditions and their study will help us further understand how protostellar envelopes are modified by jets.
Fich Michel
lada Charles
McCoey Carolyn
Teixeira Paula Stella
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