Subfind arraysΒΆ

Subgroup numbers begin at 0. Subgroup 0 of a FOF group corresponds to the most massive subgroup within the group.

The following arrays can be found in the Eagle subfind files:

Group Array Name Description
FOF ContaminationMass Contaminating mass. Physical M = Mass U_M[g] |
FOF FirstSubhaloID Index of first sub halo in SubHalo list (starts at 0) |
FOF GroupCentreOfPotential Co-moving position of most bound particle. Physical position = position h to the power of-1 a U_L[cm] |
FOF GroupLength Number of particles in this group |
FOF GroupMass Total mass of FoF group. Physical M = Mass h to the power of-1 U_M[g] |
FOF GroupOffset Offset of IDs of this group, starts at 0 |
FOF Group_M_Crit200 Mass within Rcrit200. Physical M = Mass h to the power of-1 U_M[g] |
FOF Group_M_Crit2500 M_Crit2500 |
FOF Group_M_Crit500 M_Crit500 |
FOF Group_M_Mean200 Mass within RMean200. Physical M = Mass h to the power of-1 U_M[g] |
FOF Group_M_Mean2500 M_Mean2500 |
FOF Group_M_Mean500 M_Mean500 |
FOF Group_M_TopHat200 Mass within RTophat200. Physical M = Mass h to the power of-1 U_M[g] |
FOF Group_R_Crit200 Co-moving radius within which density is 200 times critical density. Physical radius = radius h to the power of-1 a U_L[cm] |
FOF Group_R_Crit2500 R_Crit2500 |
FOF Group_R_Crit500 R_Crit500 |
FOF Group_R_Mean200 Co-moving radius within which density is 200 times mean density. Physical radius = radius h to the power of-1 a U_L[cm] |
FOF Group_R_Mean2500 R_Mean2500 |
FOF Group_R_Mean500 R_Mean500 |
FOF Group_R_TopHat200 Co-moving radius within which density is 200 times (18 * pi to the power of2 + 82 * (Omega_m(z)-1) - 39 * (Omega_m(z)-1) to the power of2); Physical radius = radius h to the power of-1 a U_L[cm] |
FOF NumOfSubhalos Number of subhaloes in this FoF group |
^ ^    
IDs ParticleID PID |
IDs Particle_Binding_Energy Binding energy of particles |
^ ^    
Subhalo ApertureMeasurements/Mass/001kpc Masses within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/Mass/003kpc Masses within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/Mass/005kpc Masses within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/Mass/010kpc Masses within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/Mass/020kpc Masses within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/Mass/030kpc Masses within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/Mass/040kpc Masses within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/Mass/050kpc Masses within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/Mass/070kpc Masses within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/Mass/100kpc Masses within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/SFR/001kpc Star formation rate within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/SFR/003kpc Star formation rate within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/SFR/005kpc Star formation rate within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/SFR/010kpc Star formation rate within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/SFR/020kpc Star formation rate within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/SFR/030kpc Star formation rate within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/SFR/040kpc Star formation rate within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/SFR/050kpc Star formation rate within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/SFR/070kpc Star formation rate within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/SFR/100kpc Star formation rate within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo |
Subhalo ApertureMeasurements/VelDisp/001kpc Stellar velocity dispersion within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo ((Expansion factor, aexp-scale-exponent, is incorrect, should be 0. See [[eagle:simulations:simulation_overview:known_bugs]] for more details.)) |
Subhalo ApertureMeasurements/VelDisp/003kpc Stellar velocity dispersion within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo <sup>1)</sup> |
Subhalo ApertureMeasurements/VelDisp/005kpc Stellar velocity dispersion within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo <sup>1)</sup>|
Subhalo ApertureMeasurements/VelDisp/010kpc Stellar velocity dispersion within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo <sup>1)</sup>|
Subhalo ApertureMeasurements/VelDisp/020kpc Stellar velocity dispersion within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo <sup>1)</sup>|
Subhalo ApertureMeasurements/VelDisp/030kpc Stellar velocity dispersion within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo <sup>1)</sup>|
Subhalo ApertureMeasurements/VelDisp/040kpc Stellar velocity dispersion within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo <sup>1)</sup>|
Subhalo ApertureMeasurements/VelDisp/050kpc Stellar velocity dispersion within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo <sup>1)</sup>|
Subhalo ApertureMeasurements/VelDisp/070kpc Stellar velocity dispersion within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo <sup>1)</sup>|
Subhalo ApertureMeasurements/VelDisp/100kpc Stellar velocity dispersion within apertures from 1 to 100 kpc (physical) of the centre of potential of the subhalo <sup>1)</sup>|
Subhalo BlackHoleMass BH mass. Physical m = Mass h to the power of-1 U_M [g] |
Subhalo BlackHoleMassAccretionRate BH accretion rate. Physical mdot = BH_Mdot h to the power of-1 U_M /U_T [g/s] |
Subhalo CentreOfMass Co-moving position of COM. Physical position = position h to the power of-1 a U_L[cm] |
Subhalo CentreOfPotential Co-moving position of most bound particle. Physical position = position h to the power of-1 a U_L[cm] |
Subhalo GasSpin Angular momentum per unit mass of gas particles |
Subhalo GroupNumber FOF Group Number subhalo belongs to |
Subhalo HalfMassProjRad Projected (av. over 3 axes) radius enclosing half of the subhalo mass comprised by each particle type <sup>1)</sup>|
Subhalo HalfMassRad Radius enclosing half of the subhalo mass comprised by each particle type <sup>1)</sup>|
Subhalo IDMostBound Particle ID of lowest total energy particle |
Subhalo InertiaTensor Matrix for the second moment of matter distribution. <sup>1)</sup>|
Subhalo InitialMassWeightedBirthZ Initial mass weighted metallicity of stars |
Subhalo InitialMassWeightedStellarAge Initial mass weighted age of stars in Gyr |
Subhalo KineticEnergy Total kinetic energy of particles bound to this halo |
Subhalo Mass Total mass of this group. Physical M = Mass h to the power of-1 U_M[g] |
Subhalo MassTwiceHalfMassRad Mass contained within twice the half mass radius for each particle type |
Subhalo MassType Total mass of this group for each particle type. Physical M = Mass h to the power of-1 U_M[g] |
Subhalo NSF/ElementAbundances/Carbon ((Some values are incorrect, see [[eagle:simulations:simulation_overview:known_bugs]] for details)) |
Subhalo NSF/ElementAbundances/Helium <sup>2)</sup>|
Subhalo NSF/ElementAbundances/Hydrogen <sup>2)</sup> |
Subhalo NSF/ElementAbundances/Iron <sup>2)</sup> |
Subhalo NSF/ElementAbundances/Magnesium <sup>2)</sup> |
Subhalo NSF/ElementAbundances/Neon <sup>2)</sup> |
Subhalo NSF/ElementAbundances/Nitrogen <sup>2)</sup> |
Subhalo NSF/ElementAbundances/Oxygen <sup>2)</sup> |
Subhalo NSF/ElementAbundances/Silicon <sup>2)</sup> |
Subhalo NSF/IronFromSNIa Iron from SNIa |
Subhalo NSF/IronFromSNIaSmoothed Smoothed iron from SNIa |
Subhalo NSF/KineticEnergy Kinetic energy of NSF gas |
Subhalo NSF/Mass Mass |
Subhalo NSF/MassFromAGB Mass from AGB |
Subhalo NSF/MassFromSNII Mass from SNII |
Subhalo NSF/MassFromSNIa Mass from SNIa |
Subhalo NSF/MassWeightedEntropy Mass weighted mean entropy of NSF gas |
Subhalo NSF/MassWeightedPotential Mass weighted potential |
Subhalo NSF/MassWeightedTemperature Mass weighted mean temperature of NSF gas |
Subhalo NSF/Metallicity Metallicity weighted by mass of non star forming gas in subhalos |
Subhalo NSF/MetalsFromAGB Mass in metals from AGB |
Subhalo NSF/MetalsFromSNII Mass in metals from SNII |
Subhalo NSF/MetalsFromSNIa Mass in metals from SNIa |
Subhalo NSF/SmootheElementAbuncdances/Carbon <sup>2)</sup> |
Subhalo NSF/SmootheElementAbuncdances/Helium <sup>2)</sup> |
Subhalo NSF/SmootheElementAbuncdances/Hydrogen <sup>2)</sup> |
Subhalo NSF/SmootheElementAbuncdances/Iron <sup>2)</sup> |
Subhalo NSF/SmootheElementAbuncdances/Magnesium <sup>2)</sup> |
Subhalo NSF/SmootheElementAbuncdances/Neon <sup>2)</sup> |
Subhalo NSF/SmootheElementAbuncdances/Nitrogen <sup>2)</sup> |
Subhalo NSF/SmootheElementAbuncdances/Oxygen <sup>2)</sup> |
Subhalo NSF/SmootheElementAbuncdances/Silicon <sup>2)</sup> |
Subhalo NSF/SmoothedMetallicity Smoothed metallicity weighted by mass of non star forming gas in subhalos |
Subhalo NSF/Spin Angular momentum per unit mass of non-star-forming gas particles |
Subhalo NSF/ThermalEnergy Thermal energy of NSF gas |
Subhalo NSF/TotalEnergy Total energy of NSF gas |
Subhalo SF/ElementAbundances/Carbon <sup>2)</sup> |
Subhalo SF/ElementAbundances/Helium <sup>2)</sup> |
Subhalo SF/ElementAbundances/Hydrogen <sup>2)</sup> |
Subhalo SF/ElementAbundances/Iron <sup>2)</sup> |
Subhalo SF/ElementAbundances/Magnesium <sup>2)</sup> |
Subhalo SF/ElementAbundances/Neon <sup>2)</sup> |
Subhalo SF/ElementAbundances/Nitrogen <sup>2)</sup> |
Subhalo SF/ElementAbundances/Oxygen <sup>2)</sup> |
Subhalo SF/ElementAbundances/Silicon <sup>2)</sup> |
Subhalo SF/IronFromSNIa Iron from SNIa |
Subhalo SF/IronFromSNIaSmoothed Smoothed iron from SNIa |
Subhalo SF/KineticEnergy Kinetic energy of SF gas |
Subhalo SF/Mass Mass |
Subhalo SF/MassFromAGB Mass from AGB |
Subhalo SF/MassFromSNII Mass from SNII |
Subhalo SF/MassFromSNIa Mass from SNIa |
Subhalo SF/MassWeightedEntropy Mass weighted mean entropy of SF gas |
Subhalo SF/MassWeightedPotential Mass weighted potential |
Subhalo SF/MassWeightedTemperature Mass weighted mean temperature of SF gas |
Subhalo SF/Metallicity Metallicity weighted by mass of star forming gas in subhalos |
Subhalo SF/MetalsFromAGB Mass in metals from AGB |
Subhalo SF/MetalsFromSNII Mass in metals from SNII |
Subhalo SF/MetalsFromSNIa Mass in metals from SNIa |
Subhalo SF/SFWeightedMetallicity Metallicity weighted by star formation rate of star forming gas in subhalos |
Subhalo SF/SmoothedElementAbundances/Carbon <sup>2)</sup> |
Subhalo SF/SmoothedElementAbundances/Helium <sup>2)</sup> |
Subhalo SF/SmoothedElementAbundances/Hydrogen <sup>2)</sup> |
Subhalo SF/SmoothedElementAbundances/Iron <sup>2)</sup> |
Subhalo SF/SmoothedElementAbundances/Magnesium <sup>2)</sup> |
Subhalo SF/SmoothedElementAbundances/Neon <sup>2)</sup> |
Subhalo SF/SmoothedElementAbundances/Nitrogen <sup>2)</sup> |
Subhalo SF/SmoothedElementAbundances/Oxygen <sup>2)</sup> |
Subhalo SF/SmoothedElementAbundances/Silicon <sup>2)</sup> |
Subhalo SF/SmoothedMetallicity Smoothed metallicity weighted by mass of star forming gas in subhalos |
Subhalo SF/SmoothedSFWeightedMetallicity Smoothed metallicity weighted by star formation rate of star forming gas in subhalos |
Subhalo SF/Spin Angular momentum per unit mass of star-forming gas particles |
Subhalo SF/ThermalEnergy Thermal energy of SF gas |
Subhalo SF/TotalEnergy Total energy of SF gas |
Subhalo StarFormationRate Total gas star formation rate in solar masses / yr |
Subhalo Stars/ElementAbundances/Carbon <sup>2)</sup> |
Subhalo Stars/ElementAbundances/Helium <sup>2)</sup> |
Subhalo Stars/ElementAbundances/Hydrogen <sup>2)</sup> |
Subhalo Stars/ElementAbundances/Iron <sup>2)</sup> |
Subhalo Stars/ElementAbundances/Magnesium <sup>2)</sup> |
Subhalo Stars/ElementAbundances/Neon <sup>2)</sup> |
Subhalo Stars/ElementAbundances/Nitrogen <sup>2)</sup> |
Subhalo Stars/ElementAbundances/Oxygen <sup>2)</sup> |
Subhalo Stars/ElementAbundances/Silicon <sup>2)</sup> |
Subhalo Stars/IronFromSNIa Iron from SNIa |
Subhalo Stars/IronFromSNIaSmoothed Smoothed iron from SNIa |
Subhalo Stars/KineticEnergy Kinetic energy of stars |
Subhalo Stars/Mass Mass in stars |
Subhalo Stars/MassFromAGB Mass from AGB |
Subhalo Stars/MassFromSNII Mass from SNII |
Subhalo Stars/MassFromSNIa Mass from SNIa |
Subhalo Stars/MassWeightedPotential Mass weighted potential |
Subhalo Stars/Metallicity Metallicity weighted by mass of stars in subhalos |
Subhalo Stars/MetalsFromAGB Mass in metals from AGB |
Subhalo Stars/MetalsFromSNII Mass in metals from SNII |
Subhalo Stars/MetalsFromSNIa Mass in metals from SNIa |
Subhalo Stars/SmoothedElementAbundances/Carbon <sup>2)</sup> |
Subhalo Stars/SmoothedElementAbundances/Helium <sup>2)</sup> |
Subhalo Stars/SmoothedElementAbundances/Hydrogen <sup>2)</sup> |
Subhalo Stars/SmoothedElementAbundances/Iron <sup>2)</sup> |
Subhalo Stars/SmoothedElementAbundances/Magnesium <sup>2)</sup> |
Subhalo Stars/SmoothedElementAbundances/Neon <sup>2)</sup> |
Subhalo Stars/SmoothedElementAbundances/Nitrogen <sup>2)</sup> |
Subhalo Stars/SmoothedElementAbundances/Oxygen <sup>2)</sup> |
Subhalo Stars/SmoothedElementAbundances/Silicon <sup>2)</sup> |
Subhalo Stars/SmoothedMetallicity Smoothed metallicity weighted by mass of stars in subhalos |
Subhalo Stars/Spin Angular momentum per unit mass of star particles |
Subhalo Stars/TotalEnergy Total energy of stars |
Subhalo StellarInitialMass Stellar initial mass |
Subhalo StellarVelDisp Stellar velocity dispersion <sup>1)</sup>|
Subhalo StellarVelDisp_HalfMassProjRad Stellar velocity dispersion within half mass radius <sup>1)</sup>|
Subhalo SubGroupNumber SubGroup Number of subhalo, begins at 0 for most massive subhalo within a group |
Subhalo SubLength Number of particles in this subhalo |
Subhalo SubLengthType Number of particles of each type in this subhalo |
Subhalo SubOffset Offset of IDs in this subhalo. Starts at 0 |
Subhalo ThermalEnergy Total thermal energy of particles bound to this halo |
Subhalo TotalEnergy Total energy of particles bound to this halo |
Subhalo Velocity Vel |
Subhalo Vmax Co-moving maximum circular velocity. Physical velocity = ??? |
Subhalo VmaxRadius VmaxRad |