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Name

snapstab - report on stability of a stellar system

Synopsis

snapstab in=in_file [parameter=value] ...

Description

snapstab calculates total binding energy (for the potential energy it needs potential energy of each star - see hackforce(1NEMO) or quadforce) and reports deviation from Virial equilibrium as 2*KE+PE. For disk systems the Ostriker-Peebles t=KE(orbital) /PE, which must be smaller than about 0.14 in order for the disk to be stable, is reported

This program is still under development - use at your risk.

Parameters

The following parameters are recognized:
in=in_file
input file, in snapshot(5NEMO) format. Default: none.
times=time-ranges
Only snapshots with time values within times-ranges, which is of the form ts[:te],..., will be used [default: all].

See Also

snapshot(5NEMO)

Author

Peter Teuben

Files


~/src/pjt/nbody       snapstab.c snapstab.1

Update History


 30-March-89    V1.0: created              PJT


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