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A very straight and collimated outflow in the core of OMC-1

Published online by Cambridge University Press:  03 August 2017

J. Schmid-Burgk ,
R. Güsten ,
R. Mauersberger ,
A. Schulz  and
T. L. Wilson
J. Schmid-Burgk
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-5300 Bonn 1, RFA
R. Güsten
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-5300 Bonn 1, RFA
R. Mauersberger
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-5300 Bonn 1, RFA
A. Schulz
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-5300 Bonn 1, RFA
T. L. Wilson
Affiliation:
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-5300 Bonn 1, RFA

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We have recently discovered a large-scale (200″) outflow system in the core of OMC-1 (fig. 1), centered about 100″ South of IRc2 and extending over some 120″ (red lobe) resp. 60″ (blue) along a position angle of —31° (Schmid-Burgk et al. 1990). The blue lobe which might actually protrude into the HII region M42 is poorly defined in CO 2-1, but the red lobe reveals a number of remarkable properties which we summarize here:

The outflow is very straight and smooth. Over the full length of 120″, the center of any cross scan deviates by not more than about 1″ from a straight line. This line passes to within 2″ the peak of the submm source FIR4 of OMC-1 (Mezger, Wink and Zylka 1990) and the mm continuum peak CS3 (Mundy et al. 1986); it also cuts across the red and blue SiO-outflow lobes recently discovered some 5-10″ to either side of FIR4 (Ziurys, Wilson and Mauersberger 1990). It thus seems that the “base” of our large-scale CO jet can be seen as well.

Type
Poster Sessions
Information
Symposium - International Astronomical Union , Volume 147: Fragmentation of Molecular Clouds and Star Formation , 1991 , pp. 491 - 493
Copyright
Copyright © Kluwer 1991 

References

Mezger, P. G., Wink, J. E., Zylka, R. 1990 Astron. Astrophys. 228, 95.Google Scholar
Mundy, L. G., Scoville, N. Z., Baath, L. B., Masson, C. R., Woody, D. P. 1986 Astrophys. J. Lett. 304, L51.Google Scholar
Schmid-Burgk, J., Güsten, R., Mauersberger, R., Schulz, A., Wilson, T. L. 1990 to appear in Astrophys. J. Letters. Google Scholar
Ziurys, L. M., Wilson, T. L., Mauersberger, R. 1990 Astrophys. J. Letters 356, L25.Google Scholar