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CHAMP+ observations of warm gas in M17 SW
J. P. Pérez-Beaupuits, M. Spaans, M. R. Hogerheijde +3
Since the main cooling lines of the gas phase are important tracers of the interstellar medium in Galactic and extragalactic sources, proper and detailed understanding of their emi…
Spitzer spectral line mapping of protostellar outflows: I. Basic data and outflow energetics
David A. Neufeld, Brunella Nisini, Teresa Giannini +7
We report the results of spectroscopic mapping observations carried out toward protostellar outflows in the BHR71, L1157, L1448, NGC 2071, and VLA 1623 molecular regions using the…
Dense and warm molecular gas in the envelopes and outflows of southern low-mass protostars
T. A. van Kempen, E. F. van Dishoeck, M. R. Hogerheijde +1
Observations of dense molecular gas lie at the basis of our understanding of the density and temperature structure of protostellar envelopes and molecular outflows. We aim to chara…
Extremely high velocity gas from the massive YSOs in IRAS 17233-3606
S. Leurini, C. Codella, L. A. Zapata +6
Molecular outflows from high-mass young stellar objects provide an excellent way to study the star formation process, and investigate if they are scaled-up versions of their low-ma…
APEX-CHAMP+ high-J CO observations of low-mass young stellar objects: II. Distribution and origin of warm molecular gas
T. A. van Kempen, E. F. van Dishoeck, R. Guesten +6
The origin and heating mechanisms of warm (50<T<200 K) molecular gas in low-mass young stellar objects (YSOs) are strongly debated. Both passive heating of the inner collapsing env…
APEX-CHAMP+ high-J CO observations of low-mass young stellar objects: I. The HH 46 envelope and outflow
T. A. van Kempen, E. F. van Dishoeck, R. Guesten +8
AIMS Our aim is to characterize the size, mass, density and temperature profiles of the protostellar envelope of HH~46 IRS 1 and its surrounding cloud material as well as the effec…