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 | |