Sgr disruption models (2005 results)


These are the simulation file results for the Law et al. (2005) models of Sgr orbiting in an axisymmetric oblate/spherical/prolate Galactic potential. Note that these have been superceded by the new model of Law & Majewski (2010) orbiting in a triaxial Galactic potential, available here.

Simulations are realized using 10^5 particles in a self-consistent field code (see Paper IV).
These files have 16 columns of data as given below.
All distances are in kpc, all velocities in km/s, and all angular measurements are in degrees.

  1. Lambda_sun: orbital longitude.
  2. Beta_sun: orbital latitude.
  3. l: Galactic longitude.
  4. b: Galactic latitude.
  5. X_GC: Standard left-handed Galactocentric Cartesian coordinate.
  6. Y_GC: Standard left-handed Galactocentric Cartesian coordinate.
  7. Z_GC: Standard left-handed Galactocentric Cartesian coordinate.
  8. X_sun: Right-handed heliocentric Cartesian coordinate in the Lambda_sun system.
  9. Y_sun: Right-handed heliocentric Cartesian coordinate in the Lambda_sun system.
  10. Z_sun: Right-handed heliocentric Cartesian coordinate in the Lambda_sun system.
  11. U: Galactic U velocity (left-handed frame).
  12. V: Galactic V velocity (left-handed frame).
  13. W: Galactic W velocity (left-handed frame).
  14. d: Heliocentric distance.
  15. vgsr: Radial velocity relative to the Galactic Standard of Rest (NB: GSR, not LSR).
  16. Pcol: "Color", or unbound era of simulated particle.

Data files are provided below (in gz format) for the three models discussed in Paper IV (oblate,spherical, and prolate Galactic halo models).

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