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The Comprehensive, Non-exhaustive List of Incorporated Properties

Concerning the gas particles processed by Hollis Akins et al. in the near-mint 200_bkgdens Justice League Simulations: explanations for assorted properties (keys) and their intrinsic units denoted in a parenthetical endnote for each.

There are three primary categories of properties attached to particle data:

  • Properties relative to satellite;
  • Properties relative to host;
  • Properties of a particle's satellite galaxy relative to the host galaxy.

Where used, the center of a satellite/host galaxy is defined by its center of mass (COM).

The Quick Version:

In General (unless where otherwise noted)...

  • Time in Gigayears $(Gyrs)$.
  • Distances in kiloparsecs $(kpc)$.
  • Velocities in kilometers per second $(km \ s^{-1})$.
  • Masses in solar masses $(M_{sol})$.
  • Gravitational Constant G in ($kpc\ km^2\ M_{sol}^{-1}\ s^{-2})$

The Long Version:

Satellite-oriented Properties: (satellite center == COM)

  • r: radial distance from satellite. (kpc)
  • r_per_Rvir: r per viral radius of satellite (sim. viral radius scaled by $a/HubbleConstant$).
  • x, y, z: coordinates relative to satellite. (kpc)
  • satRvir: virial radius of satellite. (kpc)
  • a: Justice League sim. constant.
  • vx, vy, vz: component velocities rel. satellite. (km s-1)
  • v: speed rel. to satellite. (km s-1)

Host-oriented Properties: (host centre == COM)

  • r_rel_host: radial position from host. (kpc)
  • r_rel_host_per_Rvir: r_rel_host per virial radius of host (sim. viral radius scaled by $1/a * HubbleConstant$).
  • x_rel_host, y_rel_host, z_rel_host: coord. positions rel. to host. (kpc)
  • hostRvir: virial radius of host. (kpc)
  • vx_rel_host,vy_rel_host, vz_rel_host: velocities rel. to host. (km s-1)
  • v_rel_host: speed rel. host. (km s-1)

Properties of Satellite Relative to Host: (sat./host centers == COM)

  • sat_Xc,sat_Yc, satZc: coords of sat. relative to center of simulation snapshot (scaled by $1/a * HubbleConstant$). (kpc)
  • sat_vx,sat_vy, sat_vz: velocities of sat. relative to cener of sim. (km s-1)
  • host_Xc, host_Yc, host_Zc: coords of host relative to center of sim. (kpc)
  • host_vx, host_vy, host_vz: velocities of host relative to center of sim. (km s-1)

Last rev. 24 Feb. 2022