The initial stages of an HH jet/cloud core collision.

Details The initial stages of an HH jet/cloud core collision. The initial stages of an HH jet/cloud core collision.

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995rmxaa..31...51r&link_type=abstract

Revista Mexicana de Astronomia y Astrofisica, Vol. 31, No. 1, p. 51 - 61

Astronomy and Astrophysics

Astronomy

34

Jets: Hydrodynamics, Jets: Herbig-Haro Objects, Jets: Molecular Clouds, Hydrodynamics: Ism: Jets And Outflows

Scientific paper

The authors present a study of the initial evolution of the collision of a Herbig-Haro jet with a dense molecular cloud core. A simple analytical model shows that for a wide range of angles of incidence of the jet, the interaction will result in the formation of a reflected, less well collimated jet beam. Two-dimensional numerical simulations of the interaction of jets from constant and variable velocity sources with high density clouds (i.e., with infinite cloud-to-jet density ratios) are used to check the simple analytical model, and also to show the effect of the jet/cloud collision on the evolution of the internal working surfaces (formed by the source velocity variability). Predictions of [S II] emission maps from these models are also discussed. Finally, the authors present numerical simulations of jet/cloud interactions with finite cloud-to-jet density ratios, and discuss the observational implications of these models.

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