SIMBAD references

1999ApJ...526L.113M - Astrophys. J., 526, L113-L116 (1999/December-1)

The detection of outflows in the infrared-quiet molecular core NGC 6334/I(North).


Abstract (from CDS):

We find strong evidence for outflows originating in the dense molecular core NGC 6334/I(North): a 1000 M molecular core distinguished by its lack of H II regions and mid-IR emission. New observations were obtained of the SiO (2⟶1) and (5⟶4) lines with the SEST 15 m telescope and of the H2 (ν=1⟶0) S(1) line with the ESO 2.2 m telescope. The line profiles of the SiO transitions show broad wings extending from -50 to 40 km.s–1, and spatial maps of the line-wing emission exhibit a bipolar morphology with the peaks of the red and blue wing separated by 30". The estimated mass-loss rate of the outflow is comparable to those for young intermediate- to high-mass stars. The near-IR images show eight knots of H2 emission. Five of the knots form a linear chain that is displaced from the axis of the SiO outflow; these knots may trace shock-excited gas along the path of a second, highly collimated outflow. We propose that NGC 6334/I(North) is a rare example of a molecular core in an early stage of cluster formation.

Abstract Copyright:

Journal keyword(s): ISM: Individual: NGC Number: NGC 6334 - ISM: Jets and Outflows - ISM: Molecules - Stars: Formation

Simbad objects: 3

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