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mkhernquist - create a two-component, isotropic, spherical galaxy+halo
Hernquist model
mkhernquist [parameter=value]
mkhernquist
generates a two-component, isotropic, spherical galaxy/halo model using
a superposition of two Hernquist models. The galaxy is assumed to be a
unit Hernquist model with M=a=1 while the halo mass and scale radius are
free parameters specified on the command line. The distribution function
is calculated on the fly using Eddington’s formula and then sampled to generate
a N-body realization of a galaxy. The galaxy and halo particles are dumped
in succession -- first half are galaxy particles.
The following
parameters are recognized in any order if the keyword is also given:
- out=
- Output file name. No default.
- nbody=
- Total number of particles for both components.
No default.
- m=
- Mass of Halo (where the galaxy has mass=1) [1]
- a=
- Scale
length of Halo (where the galaxy has radius=1) [1]
- seed=
- Standard seed
[0]
- addphi=
- Add potentials to snapshot [f]
- zerocm=
- Centrate snapshot
(t/f)? [t]
- headline=
- Optional verbiage []
Due to the relatively
large number of particles at large radii, setting zerocm=t will cause the
center to be significantly shifted from the origin.
mkplummer(1NEMO)
Peter Teuben, John Dubinski (original version)
27-Mar-03 V1.1 man pages finally created PJT
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