Physics
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005sptz.prop20620s&link_type=abstract
Spitzer Proposal ID #20620
Physics
Scientific paper
We propose to perform a IRAC imaging and IRS low-resolution spectroscopic mapping investigation of the precessing molecular jet and outflow V380 Ori NE. The main goal will be to investigate the effect of precession on the shape of the outflow cavity (mainly IRAC imaging) and on the interaction with the ambient cloud. We will obtain maps showing the spatial distribution of pure rotational transitions of H_2 and additional atomic/ionic forbidden lines. The H_2 lines will be used to study variations of excitation originating from changing shock properties, which we will pinpoint using detailed shock modeling and hydrodynamic molecular jet simulations. Combined with high-resolution CO maps we will see where entrainment takes place, how efficient it is, and how much of the parent cloud volume is affected. We will study the implications in terms of feedback (how efficient is the energy transfer to the ambient cloud), in terms of effects on protostar evolution (how significant is the effect of jet precession on envelope removal), and on shaping protostellar outflows themselves. Finally, we will study the effect of a molecular outflow suddenly breaking out into a low density, potentially (partly) ionized medium.
Davis Chris
Gredel Roland
McCaughrean Mark
Menten Karl
Nuernberger Dieter
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