Near-infrared imaging in H_2_ of molecular (CO) outflows from young stars.

Details Near-infrared imaging in H_2_ of molecular (CO) outflows from young stars. Near-infrared imaging in H_2_ of molecular (CO) outflows from young stars.

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...300..851d&link_type=abstract

Astronomy and Astrophysics, v.300, p.851

Astronomy and Astrophysics

Astrophysics

145

Shock Waves, Ism: Clouds, Ism: Jets And Outflows, Ism: Molecules, Infrared: Interstellar: Lines, Infrared: Stars

Scientific paper

In an attempt to identify the molecular shocks associated with the acceleration of ambient gas by collimated outflows from young stars, we have imaged a number of known molecular (CO) outflows in H_2_ v=1-0 S(1) and wide-band K. H_2_ line emission is detected in all six sources: (o) In the L 1157, VLA 1623 and NGC 6334I outflows, bow-shaped H_2_ features are observed coincident with or just ahead of (downwind of) peaks in the CO outflow maps. (o) In NGC 2264G, as well as a compact group of H_2_ knots coincident with the blue-shifted CO peak, we see an extended H_2_ filament that traces the northern edge of the red-shifted CO flow. (o) In the L 1641N and Haro 4-255 molecular outflows we see a close correlation between H_2_ line emission features and peaks in the CO outflow maps. In each outflow system, the H_2_ probably results from shocks associated with the interaction of the flow with the ambient, molecular gas. A comparison of the H_2_ data with CO outflow maps strongly suggests that "prompt entrainment" near the head of a jet is the dominant mechanism for producing the CO outflows in at least some of these sources. We are also able to account for the ratios of observed radiated energy (derived from H_2_ v=1-0 S(1) flux measurements) to mechanical power in the CO outflows in at least half of the outflows with a very simple, strong, radiative shock model.

Affiliated with

Also associated with

No associations

Rating

Near-infrared imaging in H_2_ of molecular (CO) outflows from young stars. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Near-infrared imaging in H_2_ of molecular (CO) outflows from young stars., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Near-infrared imaging in H_2_ of molecular (CO) outflows from young stars. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1266021