We are presenting a wide-field image of the Mon R2 star forming region obtained with WFCAM on UKIRT in the 2.12 μm filter centered on the H2 1–0 S(1) emission line. We report the discovery of 15 new H2 jets in Mon R2 and two in L 1646 and confirm most of these discoveries using archival Spitzer IRAC 4.5 μm and 8.0 μm images. We find that many of these protostellar jets are found in projection a...

We present multi-line and continuum observations of the circumstellar environment within 10 AU of a sample of protostars to investigate how the effects of outflows on their immediate environment changes over time. CO(1-0) emission probes the high-velocity molecular outflows near the protostars and demonstrate that the outflow opening angle widens as the nascent star evolves. Maps of the CO(1-0)...

New AAT near-infrared and SEST CO J = 2 → 1 observations are combined with existing ISO mid-infrared and ATCA cm radio continuum observations to examine the protostellar content of the Bok globule BHR 71. Together with observations of Herbig-Haro objects, these data show: (1) Two protostellar sources, IRS1 and IRS2, with a separation of ∼17 (3400 AU) are located within BHR 71. (2) Each protosta...

We present the radial velocity structure of the molecular hydrogen outflows associated to the star forming region Cepheus A. This structure is derived from the doppler shift of the H2 v=1–0 S(1) emission line obtained by Fabry–Pérot spectroscopy. The East and West regions of emission, called Cep A (E) and Cep A (W), show radial velocities in the range of -20 to 0 km s with respect to the molecu...

Outflows from young stellar objects have been identified as a possible source of turbulence in molecular clouds. To investigate the relationship between outflows, cloud dynamics and turbulence, we compare the kinematics of the molecular gas associated with NGC 1333, traced in CO(1-0), with the distribution of young stellar objects (YSOs) within. We find a velocity dispersion of ∼ 1− 1.6km/s in ...

The bipolar outflow from the massive star forming cluster in DR21 is one of the most powerful known, and in IRAC images the outflow stands out by virtue of its brightness at 4.5 μm (Band 2). Indeed, IRAC images of many galactic and extragalactic star formation regions feature prominent Band 2 morphologies. We have analyzed archival ISOSWS spectra of the DR21 outflow, and compare them to updated...

We present [N ii] and Hα images and high resolution long–slit spectra of the planetary nebula IC4846, which reveal, for the first time, its complex structure and the existence of collimated outflows. The object consists of a moderately elongated shell, two (and probably three) pairs of collimated bipolar outflows at different orientations, and an attached circular shell. One of the collimated p...

Abstract Using a series of 3D relativistic hydrodynamical simulations active galactic nuclei (AGN) we investigate how AGN power, clumpy interstellar medium (ISM) structure, and jet angle with respect to the disk affect morphology content resulting outflow. For low-power across three orders magnitude luminosities (10 41 –10 43 erg s −1 ) our did not show significant changes either or total mass ...

We present Australia Telescope Compact Array observations of the supernova remnant (SNR) G309.2–00.6. In a 1.3-GHz continuum image the remnant appears as a near-circular shell, but with two brightened and distorted arcs of emission on opposite sides. H i absorption against the SNR yields a distance in the range 5.4 to 14.1 kpc, corresponding to an age (1 − 20) × 10 3 yr. On the basis of the SNR...

We present the first contemporaneous 43GHz and 86GHz VLBI images of the v=1 J=2→1 and J=1→0 SiO masers in the Orion-KL nebula. Both maser species exhibit the same general morphology of earlier J=1→0 maser images which appear to trace the edges of a bi-polar conical outflow. Surprisingly, the J=2→1 masers form further from the central protostar than the J=1→0 masers, a fact not readily explained...