Starlab version 4.4.1
    program created on Apr 27 2005 at 22:54:34
    source file     /home/steve/starlab/src/node/dyn/util/makesecondary.C

Create binary secondary components for randomly selected stars
in the input snapshot, placing the results in a binary tree.
Only secondary masses are set here; orbital parameters are set by
dyn::makebinary.  No attempt is made to maintain any existing mass
or energy scaling.  Use scale after this function is called, but
before makebinary, if it is desired to specify energies in kT units.
Dyn version is copied from the node version.

Usage: makesecondary [OPTIONS] < input > output

Options:      
             -C    force output data to be in 'col' format [no]
                   (note: loses binary data)
             -f    specify binary fraction [0.1]
                   for stars with mass >= spacified with -m
             -i    use (a,b) as component indices [false]
             -I    don't limit masses to primary mass range [false]
             -l    specify lower limit on mass ratio or 
                   secondary mass [0]
             -M    specify upper limit for primaries to be binaries [inf]
             -m    specify lower limit for primaries to be binaries [0]
             -q    select choice of minimum mass ratio [false]
                   If true, secondary mass ratio is chosen
                   uniformly on [lower_limit, upper_limit].
                   If false, secondary mass is chosen uniformly
                   on [mmin, primary_mass], where mmin and
                   mmax are specified on the command line
             -S    split primary star [false]
             -s    specify random seed [random from system clock]
             -u    specify upper limit on mass ratio or 
                   secondary mass [1 or m_primary]

Written by Steve McMillan and Simon Portegies Zwart.

Report bugs to starlab (at) sns.ias.edu.