Jet/cloud collision, 3D gasdynamic simulations of HH 110

Creators: Raga, A. C.; Dal Pino de Gouveia, E. M.; Noriega-Crespo, A.; Mininni, P. D.; Velázquez, P. F.

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Abstract

We present 3D, gasdynamic simulations of jet/cloud collisions, with the purpose of modelling the HH 270/110 system. From the models, we obtain predictions of Hα and H_2 1–0 s(1) emission line maps, which qualitatively reproduce some of the main features of the corresponding observations of HH 110. We find that the model that better reproduces the observed structures corresponds to a jet that was deflected at the surface of the cloud ~1000 yr ago, but is now boring a tunnel directly into the cloud. This model removes the apparent contradiction between the jet/cloud collision model and the lack of detection of molecular emission in the crossing region of the HH 270 and HH 110 axes.

Additional Information

© 2002 ESO. Received: 11 April 2002. Accepted: 6 June 2002. The work of AR and PV was supported by CONACyT grants 34566-E and 36572-E. AR acknowledges support from a fellowship of the John Simon Guggenheim Memorial Foundation. PDM is a CONICET fellow. The work of EMGDP has been partially supported by a grant of the Brazilian Foundation FAPESP (13084-3). The research of ANC was partially supported by NASA-APD Grant NRA0001-ADP-096 and by the Jet Propulsion Laboratory, Caltech. We thank Israel Díaz for installing the new computer with which the numerical simulations were carried out.

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