Volume 432, Number 2, March III 2005
|Page(s)||567 - 574|
|Section||Interstellar and circumstellar matter|
|Published online||02 March 2005|
3-D kinematics of the HH 110 jet *
Departament d'Astronomia i Meteorologia, Universitat de Barcelona, Av. Diagonal 647, 08028 Barcelona, Spain e-mail: [rosario;robert.estalella]@am.ub.es
2 Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Apartado Postal 70-543, 04510 México D.F., México e-mail: email@example.com
3 Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, Av. Víctor Balaguer s/n, 08800 Vilanova i la Geltrú, Spain e-mail: firstname.lastname@example.org
4 Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA e-mail: email@example.com
5 Southern Astrophysical Research Telescope, Casilla 603, La Serena, Chile e-mail: firstname.lastname@example.org
Accepted: 8 November 2004
We present new results on the kinematics of the jet HH 110. New proper motion measurements have been calculated from [SII] CCD images obtained with a time baseline of nearly fifteen years. HH 110 proper motions show a strong asymmetry with respect to the outflow axis, with a general trend of pointing towards the west of the axis direction. Spatial velocities have been obtained by combining the proper motions and radial velocities from Fabry-Pérot data. Velocities decrease by a factor ~3 over a distance of cm, much shorter than the distances expected for the braking caused by the jet/environment interaction. Our results show evidence of an anomalously strong interaction between the outflow and the surrounding environment, and are compatible with the scenario in which HH 110 emerges from a deflection in a jet/cloud collision.
Key words: ISM: individual: HH 110 / ISM: jets and outflows / stars: pre-main sequence / ISM: Herbig-Haro objects
© ESO, 2005
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