2009A&A...507..855E


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.08CEST14:52:56

2009A&A...507..855E - Astronomy and Astrophysics, volume 507, 855-860 (2009/11-4)

The interaction of an O star wind with a Herbig-Haro jet.

ESQUIVEL A., RAGA A.C., CANTO J. and RODRIGUEZ-GONZALEZ A.

Abstract (from CDS):

Herbig-Haro jets ejected from young, low mass stars in the proximity of O/B stars will interact with the more or less isotropic winds from the more massive stars. An example of this are the jets from the stars within the proplyds near θ-Orionis. In this paper, we consider the interaction of an externally photoionized HH jet with an isotropic wind ejected from the ionizing photon source. We study this problem through numerical simulations, allowing us to obtain predictions of the detailed structure of the flow and predictions of Hα intensity maps. This is a natural extension of a previously developed analytic model for the interaction between a jet and an isotropic stellar wind. We present 3D simulations of a bipolar HH jet interacting with an isotropic wind from a massive star, assuming that the radiation from the star photoionizes all of the flow. We describe different possible flow configurations, exploring a limited set of jet and stellar wind parameters and orientations of the jet/counterjet ejection. We have computed 6 models, two of which also include a time-variability in the jet velocity. We compare the locus of the computed jet/counterjet systems with the analytic model, and find very good agreement except for cases in which the direction of the jet (or the counterjet) approaches the direction to the wind source (i.e., the O star). For the models with variable ejection velocities, we find that the internal working surfaces follow straighter trajectories (and the inter-working surface segments more curved trajectories) than the equivalent steady jet model.

Abstract Copyright:

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

Status at CDS:  

Simbad objects: 7

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Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 * tet01 Ori C ** 05 35 16.46375 -05 23 22.8486 4.20 5.15 5.13 4.91 4.73 O7Vp 1267 1
2 NAME Trapezium Cluster As* 05 35 16.5 -05 23 14           ~ 1450 1
3 * tet01 Ori G Y*O 05 35 16.723 -05 23 16.56 14.712 13.704 13.678   13.081 K0.7 97 1
4 HH 514 HH 05 35 16.98 -05 23 37.0           ~ 10 2
5 M 42 HII 05 35 17.3 -05 23 28           ~ 3695 0
6 * tet Ori ** 05 35.3 -05 24           ~ 40 1
7 HH 2 HH 05 36.4 -06 47           ~ 335 1

    Equat.    Gal    SGal    Ecl

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2020.04.08-14:52:56

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