Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21725814d&link_type=abstract
American Astronomical Society, AAS Meeting #217, #258.14; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
Energetic outflows are a ubiquitous signpost of star formation, observed in young stars of all masses. In studies of the early stages of star formation, we strive both to understand the mechanical and chemical properties of gas within an outflow, and to characterize outflow interactions with the dense clouds in which they are embedded. To develop a complete model of the interactions between protostar, outflow, and natal molecular cloud, surveys of entire star forming clouds as well as detailed studies of individual outflows are required. We have conducted a near-infrared protostellar shock survey of 35 star-forming regions in the Galaxy, including both isolated, individual outflows as well as larger molecular clouds containing multiple outflows. We imaged these regions in near-infrared narrow-band emission lines of molecular hydrogen, [FeII], and Paschen beta with the refurbished 2MASS camera on the Steward Observatory 61-inch Kuiper telescope. In addition, we have obtained moderate resolution (R=3500) near-infrared spectra (using TripleSpec at the Apache Point Observatory) for some of the individual outflows. We use the complementary near-infrared spectroscopic and imaging data to characterize the physical properties of each outflow, including excitation temperatures, emission line velocities, and energetics, and to describe the feedback these outflows may have on their natal clouds.
Drosback Meredith M.
Indebetouw Remy
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