Submillimetre and Near Infrared Observations of L:1448 - a Curving H/2 Jet with Multiple Bow Shocks

Details Submillimetre and Near Infrared Observations of L:1448 - a Curving H/2 Jet with Multiple Bow Shocks Submillimetre and Near Infrared Observations of L:1448 - a Curving H/2 Jet with Multiple Bow Shocks

Feb 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.266..933d&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 266, NO. 4/FEB15, P. 933, 1994

Astronomy and Astrophysics

Astronomy

41

Circumstellar Matter - Ism: Jets And Outflows - Ism: Molecules - Infrared: Ism: Lines And Bands

Scientific paper

A high-resolution (0.6 arcsec pixel-1), narrow-band, H2 ν=1-0 S(1) image of the high-velocity CO outflow in L1448 reveals a remarkable jet-like structure. The coincidence of this H2 jet with the CO bipolar outflow implies a close association between the two phenomena. The H2 jet comprises a series of knots, and three bow- shaped features equally spaced along the jet length, which we associate with the sporadic nature of this outflow. K-band imaging of the source also shows a conical reflection nebula extending towards the H2 jet structure, whilst maps in HCO+ J=3-2 and CS J=5-4 show two peaks, one towards the source of the H2 jet and CO outflow, and the other towards the infrared source IRS 3 situated to the north of this region. Together these observations suggest that the H2 jet represents the shock interface between a stellar wind from the L1448-mm source and the surrounding molecular gas, although the CO outflow is not thought to be dependent on this interaction.

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