Star-forming regions show a rich and varied chemistry, including the presence of complex
organic molecules—in both the cold gas distributed on large scales and the hot regions …

▪ Abstract A violent outflow of high-velocity gas is one of the first manifestations of the
formation of a new star. Such outflows emerge bipolarly from the young object and involve …

New deep narrowband images of the Orion Nebula obtained with WFPC2 on the Hubble
Space Telescope (HST) and spectra taken with the HIRES spectrometer at the Keck …

TIGHTLY collimated outflows of gas are often associated with regions of star formation; they
interact with the ambient interstellar medium to produce the knots of shock-excited emission …

We present results of numerical simulations carried out with a two-dimensional radiation
hydrodynamics code in order to study the impact of massive stars on their surrounding …

We extend some recent shock capturing methods designed to solve nonlinear hyperbolic
systems of conservation laws and which avoid the use of artificial viscosity for treating strong …

Young massive stars in the center of crowded star clusters are expected to undergo close
dynamical encounters that could lead to energetic, explosive events. However, there has so …

We present high-resolution VLA mosaics of 18 adjacent fields in OMC-1 covering an 8
&arcmin;× 4 &arcmin;(1.2× 0.6 pc) region surrounding the Orion-KL core. The NH 3 (J, K)=(1 …

Context. The Kleinmann-Low nebula in Orion (Orion-KL) is the nearest example of a high-
mass star-forming environment. Studying the resolved chemical substructures of this …

The visually familiar Trapezium cluster is but one of three centers of recent star formation in
the Orion Nebula, with the other two still embedded in its host molecular cloud. The Orion …