Query : 2009A&A...493..115R

2009A&A...493..115R - Astronomy and Astrophysics, volume 493, 115-118 (2009/1-1)

Curved Herbig-Haro jets immersed in a stellar wind.


Abstract (from CDS):

Several curved Herbig-Haro (HH) jet/counterjet systems have been observed. Some of these systems are the result of a relative motion between the outflow source and the surrounding environment. In this paper, we consider the case of an HH jet/counterjet system that is immersed in an isotropic stellar wind. This situation is somewhat different from the previously studied HH jet/plane-parallel side wind interaction, because the isotropic wind is divergent, and has a radially dependent density structure. We present an analytic model for a jet/wind interaction that is based on the balance between the ram pressure of the wind and the centrifugal pressure along the curved jet/counterjet path. We consider the case of an isothermal jet. We find that, if we have a jet and a wind with similar velocities and mass loss rates, the jet/counterjet system only shows a shallow curvature, with a total deflection angle of only a few degrees. However, if we have stronger winds, quite large deflections are produced (e.g., for the interaction of an HH jet with the wind from an O star). The deflection angle depends on neither the separation between the jet and wind sources nor on the ejection direction of the jet/counterjet.

Abstract Copyright:

Journal keyword(s): ISM: kinematics and dynamics - ISM: jets and outflows - ISM: Herbig-Haro objects - stars: winds, outflows

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
1 NGC 1333 OpC 03 29 11.3 +31 18 36           ~ 1424 1
2 V* V1213 Tau Or* 04 31 37.5055489536 +18 12 24.383952396           K7 560 0
3 * tet01 Ori C SB* 05 35 16.4662967280 -05 23 22.921811880 4.20 5.15 5.13 4.91 4.73 O7Vp 1392 1
4 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1602 1
5 M 42 HII 05 35 17 -05 23.4           ~ 4036 0

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