The Physics of turbulent and dynamically unstable Herbig-Haro jets

Details The Physics of turbulent and dynamically unstable Herbig-Haro jets The Physics of turbulent and dynamically unstable Herbig-Haro jets

2009-12-24

arxiv.org/abs/0912.4847v1

Astrophys.Space Sci.326:249-262,2010

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

17 pages, 10 figures. Accepted for publication in Astrophysics & Space

Scientific paper

10.1007/s10509-009-0255-8

The overall properties of the Herbig-Haro objects such as centerline velocity, transversal profile of velocity, flow of mass and energy are explained adopting two models for the turbulent jet. The complex shapes of the Herbig-Haro objects, such as the arc in HH34 can be explained introducing the combination of different kinematic effects such as velocity behavior along the main direction of the jet and the velocity of the star in the interstellar medium. The behavior of the intensity or brightness of the line of emission is explored in three different cases : transversal 1D cut, longitudinal 1D cut and 2D map. An analytical explanation for the enhancement in intensity or brightness such as usually modeled by the bow shock is given by a careful analysis of the geometrical properties of the torus.

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