Tools

McLuster – Make a Star Cluster

Source

Features

  • generates star clusters for NBODY6 or as ascii tables
  • scaling to N-body units or astrophysical units
  • selection of density profiles:
    • Plummer (1911)
    • King (1966)
    • mass-segregated Subr
    • mass-segregated Kroupa & Baumgardt (2007)
    • Elson, Fall & Freeman (1987)
    • Nuker (Lauer et al. 1995)
    • homogeneous density
  • allows specification of mass segregation degree for any profile
  • allows specification of fractal dimension for any profile
  • determines half-mass radius according to Marks & Kroupa (2012)
  • allows addition of an external gas potential
  • selection of stellar mass functions:
    • single-mass
    • Kroupa (2001) two-part power-law IMF
    • user-defined multi-power-law IMF
    • Kroupa (2001) IMF with optimal sampling (Kroupa et al. 2011)
    • L3 IMF (Maschberger 2012)
  • generates evolved stellar populations using SSE (Hurley, Pols & Tout 2000)
  • determines maximum stellar mass according to Weidner & Kroupa (2006) relation
  • determines maximum stellar mass for old, evolved populations using the Prantzos (2007) relation
  • random pairing or ordered pairing for O and B stars
  • selection of semi-major axis distributions:
    • flat in a given interval
    • determined using the Kroupa (1995) period distribution
    • determined using the Duquennoy & Mayor (1991) period distribution
    • determined using the Sana & Evans (2011) period distribution (for high-mass binaries)
  • applies Kroupa (1995) eigenevolution to short-period binaries
  • uses Sana & Evans (2011) eccentricity distribution for high-mass binaries
  • evolves binaries using BSE (Hurley, Tout & Pols 2002)
  • OpenMP multi-core usage for high performance

 

 

Coco – Coordinate Converter

Source

Features

  • converts coordinates of celestial objects
  • positional coordinate systems:
    • Equatorial
    • Galactic
    • Cartesian
  • velocity systems:
    • Equatorial proper motions
    • Galactic proper motion + position angle
    • Cartesian

 

 

Naus – Analysis Package for N-body Data

Source

Features

  • analyzes binary-formatted output files from Nbody4/6/7 or ascii tables
  • determines the density center with Casertano & Hut (1985)
  • searches for binaries and removes them from statistics
  • classifies stars into bound, unbound, and energetically unbound
  • measures velocity dispersion and dispersion of escape velocities
  • creates density and velocity dispersion profiles
  • calculates observable magnitudes and realistic errors
  • outputs time-series of general statistics and snapshots
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