EDP Sciences
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Volume 432, Number 2, March III 2005
Page(s) 567 - 574
Section Interstellar and circumstellar matter
DOI http://dx.doi.org/10.1051/0004-6361:20041402

A&A 432, 567-574 (2005)
DOI: 10.1051/0004-6361:20041402

3-D kinematics of the HH 110 jet

R. López1, R. Estalella1, A. C. Raga2, A. Riera3, 1, B. Reipurth4 and S. R. Heathcote5

1  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: raga@nuclecu.unam.mx
3  Departament de Física i Enginyeria Nuclear, Universitat Politècnica de Catalunya, Av. Víctor Balaguer s/n, 08800 Vilanova i la Geltrú, Spain
    e-mail: angels.riera@upc.es
4  Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
    e-mail: reipurth@ifa.hawaii.edu
5  Southern Astrophysical Research Telescope, Casilla 603, La Serena, Chile
    e-mail: sheathcote@ctio.noao.edu

(Received 3 June 2004 / 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 ${\sim}10^{18}$ 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

SIMBAD Objects

© ESO 2005