WR 140 Simualtions
1. Introduction
WR 140 is an extensively studied, colliding wind binary consisting of
a WC7 star and an O4-5 supergiant. As summarized in the following table, the stellar, wind, and orbital parameters of WR 140 are similar to those of eta Carinae.
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a: Marchenko et a. (2003); b: Pollock et al. (2005); c: Model A of Zhekov & Skinner (2000) |
Both winds are assumed to be adiabatic and have the temperature at T=42,000K at the stellar surfaces. The wind particles are assumed to coast without any net external forces.
This page has links to a few movies from a simualtion for rout=10a, where rout is the radius of the simulation boundary and a is the semi-major axis.
2. Movies
In the following simulation, the binary orbit is on the x-y plane and the major axis of the orbit is along the x-axis (+x-axis is in the direction of the apastron). At t=0, the system is at the apastron. The density shown in movies is in cgs units. Times are in units of the orbital period.
- 2-D maps of the denity (upper panels) and temperature (lower panels) in the x-y, x-z, and y-z planes, from left to right.
A full orbit movie from t=-0.429 to t=+0.570 (from 1,244 days before the first periastron passge to 1,246 days before the next periastron passage).GIF animation (428MB); Quick Time movie (63MB)
- The density distribution in the orbital plane (the x-y plane; the left panel) and in the plane perpendicular to the orbital plane and through the major axis (y=0; the right panel).
GIF animation (261MB); Quick Time movie (46MB)
- The density distribution in the orbital plane (the x-y plane; the left panel) and along the major axis (x=0; the right panel).
GIF animation (83MB); Quick Time movie (20MB)