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Astron. Astrophys. 334, 264-268 (1998)

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Imaging studies of localized, ionized flows in the Rosette nebula

C.A. Clayton 1, J. Meaburn 2, J.A. López 3, P.E. Christopoulou 2, 4 and C.D. Goudis 2, 4

1 Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, UK
2 Department of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, UK
3 Instituo de Astronomía, UNAM, Apartado Postal, 877, Ensenada, México
4 Astronomical Laboratory, Department of Physics, University of Patras, GR-26110 Patras, Greece

Received 24 September 1997 / Accepted 6 January 1998


Optical ([S II ] 6717 & 6731Å, [S III ] 9069Å, [O III ] 5007Å and H [FORMULA]  + [N II ] 6584Å), K-band, H2 1-0 S(1) 2.122µm and [Fe II] 1.64µm imagery has been obtained of a group of high-speed knots close to the core of the Rosette nebula. A high-speed, high-excitation, bow-shaped structure has been directly imaged in [O III ] 5007Å for the first time and is interpreted as a bow shock either at the head of a collimated flow or around a fast-moving molecular bullet. Two candidates for the driving source of these motions have also been identified in a system where no sources were previously known.

Key words: ISM: individual objects: Rosette nebula – ISM: jets and outflows – H ii regions – infrared: ISM: lines and bands

© European Southern Observatory (ESO) 1998

Online publication: May 12, 1998