TY - JOUR
T1 - A spectroscopic study of the giant infrared jet powering NGC 2264 G
AU - Lada, Charles
AU - Fich, Michel
AU - McCoey, Carolyn
AU - Teixeira, Paula Stella
PY - 2007/5/1
Y1 - 2007/5/1
N2 - 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.
AB - 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.
M3 - Article
JO - Spitzer Proposal ID 40511
JF - Spitzer Proposal ID 40511
ER -