AHFProf

The AHFProf tables store profiles of AHF halos, i.e. their inner structure in radial bins.

IMPORTANT:
A negative value for Rbin indicates that the results at that radius have not converged and are dominated by two-body collisions according to the criterion of Power et al. (2003).

NOTE:
Columns with colored background exist only for simulations which include gas physics and star formation.

Column Type UCD Unit Description
ahfProfileId bigint meta.id; meta.main unique id for AHF radial profile bin, e.g.

ahfProfileId = ahfId * 100 + radial bin number

The power of 10 can be different for each simulation database.

ahfId bigint meta.id; meta.main unique id of the AHF halo, same as ahfId in corresponding AHF catalogue.
snapnum smallint time.epoch number of snapshot
Rbin float pos.distance 1/h kpc outer radius of radial bin; a negative value indicates that results at this radius have not converged. See note above.
np int meta.number number of particles inside sphere of radius Rbin
mass float phys.mass 1/h Msun mass inside sphere of radius Rbin
ovdens float phys.density; arith.ratio overdensity of mass inside the sphere of radius Rbin; = M(<Rbin)/(4 π Rbin3/3) / ρb
dens float phys.density density in current shell; = M(Rbin)/(4 π Rbin3/3) / ρb
Vcirc float phys.veloc km/s rotation curve
Vesc float phys.veloc km/s escape velocity from material inside Rbin-sphere
sigV float phys.veloc.dispersion km/s velocity dispersion of material inside Rbin-sphere
Lx float phys.angMomentum; pos.cartesian.x Msun/h Mpc/h km/s x-component of angular momentum of material inside Rbin-sphere
Ly float phys.angMomentum; pos.cartesian.y Msun/h Mpc/h km/s y-component of angular momentum of material inside Rbin-sphere
Lz float phys.angMomentum; pos.cartesian.z Msun/h Mpc/h km/s z-component of angular momentum of material inside Rbin-sphere
b float arith.ratio ratio of intermediate to major axis; derived from 2. eigenvalue of the inertia tensor
c float arith.ratio ratio of minor to major axis
Eax float x-component of the major axis (normalized)
Eay float y-component of the major axis (normalized)
Eaz float z-component of the major axis (normalized)
Ebx float x-component of the intermediate axis (normalized)
Eby float y-component of the intermediate axis (normalized)
Ebz float z-component of the intermediate axis (normalized)
Ecx float x-component of the minor axis (normalized)
Ecy float y-component of the minor axis (normalized)
Ecz float z-component of the minor axis (normalized)
Ekin float phys.energy Msun/h (km/s)2 kinetic energy
Epot float phys.energy Msun/h (km/s)2 potential energy
mass_gas float phys.mass 1/h Msun mass of all gas particles
mass_star float phys.mass 1/h Msun mass of all star particles
u_gas float phys.energy Msun/h (km/s)2 thermal energy of gas
Z_gas_sh float phys.abundance average metallicity of gas inside the shell
Z_star_sh float phys.abundance average metallicity of stars inside the shell

Example

Profile for a given AHF halo

SELECT Rbin, snapnum, np, mass, ovdens 
FROM Clues3_LGDM.AHFProf 
WHERE ahfId = 134000002 
AND Rbin>0
ORDER BY Rbin

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