Plot type:
Histogram bins the data by a single field and displays count of objects per bin.
Heatmap bins the data by two fields and displays count as color.
Conditional distribution bins the data by one field and displays the distribution of a second field within that bin as a boxplot (range and quartiles).
Shows a scatterplot of a (random subset) of actual data points.

For log functionality, set the filter to enable only positive values.

For log functionality, set the filter to enable only positive values.

For log functionality, set the filter to enable only positive values.

Count:
Choose whether the object count per bin is shown in linear or log scale.
Count is shown on the Y axis.
Count is shown on the color (Z) axis.

Use "*" as wildcard

Examples:{{ bucket.key }}

Range:

{{filter.render(filter.aggs.min)}}

{{filter.render(filter.aggs.max)}}

Select field to filter

Example python code to apply the above filters and retrieve data. To use, download and install this module .

Field | Variable | Type | Units | Description |
---|---|---|---|---|

simulation_suite | simulation_suite | byte | e.g. 'IllustrisTNG' or 'SIMBA'. | |

simulation_set | simulation_set | byte | e.g. 'LH', '1P', 'CV' or 'EX'. | |

simulation_set_id | simulation_set_id | short | Integer ID of the simulation set. E.g. for IllustrisTNG LH 12, this value is '12'. | |

params | float | Simulation parameter: | ||

Omega_m | params_Omega_m | float | The cosmic density of matter relative to the critical density. | |

sigma_8 | params_sigma_8 | float | The normalization of the primordial density fluctuations. | |

A_SN1 | params_A_SN1 | float | A normalization factor for the flux of galactic winds. | |

A_AGN1 | params_A_AGN1 | float | A normalization factor for the overall energy output of AGN feedback. | |

A_SN2 | params_A_SN2 | float | A normalization factor for the speed of galactic winds. | |

A_AGN2 | params_A_AGN2 | float | A normalization factor for the specific energy of AGN feedback. | |

snap | snapshot | short | Snapshot number, which can be connected to the redshift of the snapshot. | |

z | redshift | float | Redshift of the snapshot corresponding to this group catalog. | |

type | type | boolean | ||

id | id | integer | Group index number | |

Group | float | FoF Halos | ||

BHMass | Group_BHMass | float | \(10^{10}M_\odot/h\) | Sum of the BH_Mass field of all blackholes (type 5) in this group. |

\(\dot{M}_{\rm BH}\) | Group_BHMdot | float | \((10^{10}M_\odot/h)/(0.978Gyr/h)\) | Sum of the BH_Mdot field of all blackholes (type 5) in this group. |

CM | float | ckpc/h | Center of mass of the group, computed as the sum of the mass weighted relative coordinates of all particles/cells in the group, of all types. Comoving coordinate. (Available only for the Illustris-3 run) | |

\({\rm CM}_x\) | Group_CM_x | float | ||

\({\rm CM}_y\) | Group_CM_y | float | ||

\({\rm CM}_z\) | Group_CM_z | float | ||

FirstSub | Group_FirstSub | integer | Index into the Subhalo table of the first/primary/most massive Subfind group within this FoF group. Note: This value is signed (or should be interpreted as signed)! In this case, a value of -1 indicates that this FoF group has no subhalos. | |

GasMetalFractions | float | Individual abundances: dimensionless ratio of the total mass in that species divided by the total gas mass, for all gas cells in the group. | ||

H | Group_GasMetalFractions_H | float | ||

He | Group_GasMetalFractions_He | float | ||

C | Group_GasMetalFractions_C | float | ||

N | Group_GasMetalFractions_N | float | ||

O | Group_GasMetalFractions_O | float | ||

Ne | Group_GasMetalFractions_Ne | float | ||

Mg | Group_GasMetalFractions_Mg | float | ||

Si | Group_GasMetalFractions_Si | float | ||

Fe | Group_GasMetalFractions_Fe | float | ||

total | Group_GasMetalFractions_total | float | The 'total' of all other (i.e. untracked) metals. | |

GasMetallicity | Group_GasMetallicity | float | Mass-weighted average metallicity (Mz/Mtot, where Z = any element above He) of all gas cells in this FOF group. | |

\(N_{\rm part}\) | Group_Len | integer | Integer counter of the total number of particles/cells of all types in this group. | |

LenType | integer | Integer counter of the total number of particles/cells, split into the six different types, in this group. Note: Wind phase cells are counted as stars (type 4) for GroupLenType. | ||

\(N_{\rm gas}\) | Group_LenType_gas | integer | ||

\(N_{\rm DM}\) | Group_LenType_dm | integer | ||

unused | Group_LenType_unused | integer | ||

tracers | Group_LenType_tracers | integer | ||

\(N_{\rm stars}\) | Group_LenType_stars | integer | ||

\(N_{\rm BH}\) | Group_LenType_bh | integer | ||

\(M_{\rm tot}\) | Group_Mass | float | \(10^{10}M_\odot/h\) | Sum of the individual masses of every particle/cell, of all types, in this group. |

MassType | float | \(10^{10}M_\odot/h\) | Sum of the individual masses of every particle/cell, split into the six different types, in this group. Note: Wind phase cells are counted as gas (type 0) for GroupMassType. | |

\(M_{\rm gas}\) | Group_MassType_gas | float | ||

\(M_{\rm DM}\) | Group_MassType_dm | float | ||

unused | Group_MassType_unused | float | ||

tracers | Group_MassType_tracers | float | ||

\(M_{\star}\) | Group_MassType_stars | float | ||

\(M_{\rm BH}\) | Group_MassType_bh | float | ||

Nsubs | Group_Nsubs | integer | Count of the total number of Subfind groups within this FoF group. | |

Pos | float | ckpc/h | Spatial position within the periodic box of the maximum bound particle. Comoving coordinate. | |

x | Group_Pos_x | float | ||

y | Group_Pos_y | float | ||

z | Group_Pos_z | float | ||

SFR | Group_SFR | float | \(M_\odot/yr\) | Sum of the individual star formation rates of all gas cells in this group. |

StarMetalFractions | float | Individual abundances: dimensionless ratio of the total mass in that species divided by the total stellar mass, for all stars in the group. | ||

H | Group_StarMetalFractions_H | float | ||

He | Group_StarMetalFractions_He | float | ||

C | Group_StarMetalFractions_C | float | ||

N | Group_StarMetalFractions_N | float | ||

O | Group_StarMetalFractions_O | float | ||

Ne | Group_StarMetalFractions_Ne | float | ||

Mg | Group_StarMetalFractions_Mg | float | ||

Si | Group_StarMetalFractions_Si | float | ||

Fe | Group_StarMetalFractions_Fe | float | ||

total | Group_StarMetalFractions_total | float | The 'total' of all other (i.e. untracked) metals. | |

StarMetallicity | Group_StarMetallicity | float | Mass-weighted average metallicity (Mz/Mtot, where Z = any element above He) of all star particles in this FOF group. | |

vel | float | km/s/a | Velocity of the group, computed as the sum of the mass weighted velocities of all particles/cells in this group, of all types. The peculiar velocity is obtained by multiplying this value by \(1/a.\) | |

\(v_x\) | Group_Vel_x | float | ||

\(v_y\) | Group_Vel_y | float | ||

\(v_z\) | Group_Vel_z | float | ||

WindMass | Group_WindMass | float | \(10^{10}M_\odot/h\) | Sum of the individual masses of all wind phase gas cells (type 4, BirthTime <= 0) in this group. |

M_Crit200 | Group_M_Crit200 | float | \(10^{10}M_\odot/h\) | Total Mass of this group enclosed in a sphere whose mean density is 200 times the critical density of the Universe, at the time the halo is considered. |

M_Crit500 | Group_M_Crit500 | float | \(10^{10}M_\odot/h\) | Total Mass of this group enclosed in a sphere whose mean density is 500 times the critical density of the Universe, at the time the halo is considered. |

M_Mean200 | Group_M_Mean200 | float | \(10^{10}M_\odot/h\) | Total Mass of this group enclosed in a sphere whose mean density is 200 times the mean density of the Universe, at the time the halo is considered. |

M_TopHat200 | Group_M_TopHat200 | float | \(10^{10}M_\odot/h\) | Total Mass of this group enclosed in a sphere whose mean density is \(\Delta_c\) times the critical density of the Universe, at the time the halo is considered. \(\Delta_c\) derives from the solution of the collapse of a spherical top-hat perturbation (fitting formula from Bryan+ 1998, http://adsabs.harvard.edu/abs/1998ApJ...495...80B). The subscript 200 can be ignored. |

R_Crit200 | Group_R_Crit200 | float | ckpc/h | Comoving Radius of a sphere centered at the GroupPos of this Group whose mean density is 200 times the critical density of the Universe, at the time the halo is considered. |

R_Crit500 | Group_R_Crit500 | float | ckpc/h | Comoving Radius of a sphere centered at the GroupPos of this Group whose mean density is 500 times the critical density of the Universe, at the time the halo is considered. |

R_Mean200 | Group_R_Mean200 | float | ckpc/h | Comoving Radius of a sphere centered at the GroupPos of this Group whose mean density is 200 times the mean density of the Universe, at the time the halo is considered. |

R_TopHat200 | Group_R_TopHat200 | float | ckpc/h | Comoving Radius of a sphere centered at the GroupPos of this Group whose mean density is \(\Delta_c\) times the critical density of the Universe, at the time the halo is considered. |

Subhalo | float | Subfind Subhalos | ||

id | Subhalo_id | integer | Subhalo index number | |

BHMass | Subhalo_BHMass | float | \(10^{10}M_\odot/h\) | Sum of the masses of all blackholes in this subhalo. |

BHMdot | Subhalo_BHMdot | float | \((10^{10}M_\odot/h)/(0.978Gyr/h)\) | Sum of the instantaneous accretion rates \(\dot{M}\) of all blackholes in this subhalo. |

BfldDisk | Subhalo_BfldDisk | float | \((h/a^2)(\rm{UnitPressure})^{1/2}\) | The square root of the volume weighted value of $B^{2}$ for all gas cells within the canonical two times the stellar half mass radius. This value gives a magnetic field strength which would have the same amount of mean magnetic energy as the galaxy cells. |

BfldHalo | Subhalo_BfldHalo | float | \((h/a^2)(\rm{UnitPressure})^{1/2}\) | The square root of the volume weighted value of $B^{2}$ for all gas cells in the subhalo. This value gives a magnetic field strength which would have the same amount of mean magnetic energy as the subhalo cells. |

CM | float | ckpc/h | Comoving center of mass of the Subhalo, computed as the sum of the mass weighted relative coordinates of all particles/cells in the Subhalo, of all types. | |

x | Subhalo_CM_x | float | ||

y | Subhalo_CM_y | float | ||

z | Subhalo_CM_z | float | ||

GasMetalFractions | float | Individual abundances: dimensionless ratio of the total mass in that species divided by the total gas mass, both restricted to gas cells within twice the stellar half mass radius. | ||

H | Subhalo_GasMetalFractions_H | float | ||

He | Subhalo_GasMetalFractions_He | float | ||

C | Subhalo_GasMetalFractions_C | float | ||

N | Subhalo_GasMetalFractions_N | float | ||

O | Subhalo_GasMetalFractions_O | float | ||

Ne | Subhalo_GasMetalFractions_Ne | float | ||

Mg | Subhalo_GasMetalFractions_Mg | float | ||

Si | Subhalo_GasMetalFractions_Si | float | ||

Fe | Subhalo_GasMetalFractions_Fe | float | ||

total | Subhalo_GasMetalFractions_total | float | The 'total' of all other (i.e. untracked) metals. | |

GasMetalFractionsHalfRad | float | Same as SubhaloGasMetalFractions, but restricted to cells within the stellar half mass radius. | ||

H | Subhalo_GasMetalFractionsHalfRad_H | float | ||

He | Subhalo_GasMetalFractionsHalfRad_He | float | ||

C | Subhalo_GasMetalFractionsHalfRad_C | float | ||

N | Subhalo_GasMetalFractionsHalfRad_N | float | ||

O | Subhalo_GasMetalFractionsHalfRad_O | float | ||

Ne | Subhalo_GasMetalFractionsHalfRad_Ne | float | ||

Mg | Subhalo_GasMetalFractionsHalfRad_Mg | float | ||

Si | Subhalo_GasMetalFractionsHalfRad_Si | float | ||

Fe | Subhalo_GasMetalFractionsHalfRad_Fe | float | ||

total | Subhalo_GasMetalFractionsHalfRad_total | float | The 'total' of all other (i.e. untracked) metals. | |

GasMetalFractionsMaxRad | float | Same as SubhaloGasMetalFractions, but restricted to cells within the radius of $V_{ m max} | ||

H | Subhalo_GasMetalFractionsMaxRad_H | float | ||

He | Subhalo_GasMetalFractionsMaxRad_He | float | ||

C | Subhalo_GasMetalFractionsMaxRad_C | float | ||

N | Subhalo_GasMetalFractionsMaxRad_N | float | ||

O | Subhalo_GasMetalFractionsMaxRad_O | float | ||

Ne | Subhalo_GasMetalFractionsMaxRad_Ne | float | ||

Mg | Subhalo_GasMetalFractionsMaxRad_Mg | float | ||

Si | Subhalo_GasMetalFractionsMaxRad_Si | float | ||

Fe | Subhalo_GasMetalFractionsMaxRad_Fe | float | ||

total | Subhalo_GasMetalFractionsMaxRad_total | float | The 'total' of all other (i.e. untracked) metals. | |

GasMetalFractionsSfr | float | Same as SubhaloGasMetalFractions, but restricted to cells which are star-forming. | ||

H | Subhalo_GasMetalFractionsSfr_H | float | ||

He | Subhalo_GasMetalFractionsSfr_He | float | ||

C | Subhalo_GasMetalFractionsSfr_C | float | ||

N | Subhalo_GasMetalFractionsSfr_N | float | ||

O | Subhalo_GasMetalFractionsSfr_O | float | ||

Ne | Subhalo_GasMetalFractionsSfr_Ne | float | ||

Mg | Subhalo_GasMetalFractionsSfr_Mg | float | ||

Si | Subhalo_GasMetalFractionsSfr_Si | float | ||

Fe | Subhalo_GasMetalFractionsSfr_Fe | float | ||

total | Subhalo_GasMetalFractionsSfr_total | float | The 'total' of all other (i.e. untracked) metals. | |

GasMetalFractionsSfrWeighted | float | Same as SubhaloGasMetalFractions, but weighted by the cell star-formation rate rather than the cell mass. | ||

H | Subhalo_GasMetalFractionsSfrWeighted_H | float | ||

He | Subhalo_GasMetalFractionsSfrWeighted_He | float | ||

C | Subhalo_GasMetalFractionsSfrWeighted_C | float | ||

N | Subhalo_GasMetalFractionsSfrWeighted_N | float | ||

O | Subhalo_GasMetalFractionsSfrWeighted_O | float | ||

Ne | Subhalo_GasMetalFractionsSfrWeighted_Ne | float | ||

Mg | Subhalo_GasMetalFractionsSfrWeighted_Mg | float | ||

Si | Subhalo_GasMetalFractionsSfrWeighted_Si | float | ||

Fe | Subhalo_GasMetalFractionsSfrWeighted_Fe | float | ||

total | Subhalo_GasMetalFractionsSfrWeighted_total | float | The 'total' of all other (i.e. untracked) metals. | |

GasMetallicity | Subhalo_GasMetallicity | float | Mass-weighted average metallicity (Mz/Mtot, where Z = any element above He) of the gas cells bound to this Subhalo, but restricted to cells within twice the stellar half mass radius. | |

GasMetallicityHalfRad | Subhalo_GasMetallicityHalfRad | float | Same as SubhaloGasMetallicity, but restricted to cells within the stellar half mass radius. | |

GasMetallicityMaxRad | Subhalo_GasMetallicityMaxRad | float | Same as SubhaloGasMetallicity, but restricted to cells within the radius of \(V_{max}\). | |

GasMetallicitySfr | Subhalo_GasMetallicitySfr | float | Mass-weighted average metallicity (Mz/Mtot, where Z = any element above He) of the gas cells bound to this Subhalo, but restricted to cells which are star forming. | |

GasMetallicitySfrWeighted | Subhalo_GasMetallicitySfrWeighted | float | Same as SubhaloGasMetallicitySfr, but weighted by the cell star-formation rate rather than the cell mass. | |

GrNr | Subhalo_GrNr | integer | Index into the Group table of the FOF host/parent of this Subhalo. | |

HalfmassRad | Subhalo_HalfmassRad | float | ckpc/h | Comoving radius containing half of the total mass (SubhaloMass) of this Subhalo. |

HalfmassRadType | float | ckpc/h | Comoving radius containing half of the mass of this Subhalo split by Type (SubhaloMassType). | |

gas | Subhalo_HalfmassRadType_gas | float | ||

dm | Subhalo_HalfmassRadType_dm | float | ||

unused | Subhalo_HalfmassRadType_unused | float | ||

tracers | Subhalo_HalfmassRadType_tracers | float | ||

stars | Subhalo_HalfmassRadType_stars | float | ||

bh | Subhalo_HalfmassRadType_bh | float | ||

IDMostbound | Subhalo_IDMostbound | integer | The ID of the particle with the smallest binding energy (could be any type). | |

Len | Subhalo_Len | integer | Total number of member particle/cells in this Subhalo, of all types. | |

LenType | integer | Total number of member particle/cells in this Subhalo, separated by type. | ||

gas | Subhalo_LenType_gas | integer | ||

dm | Subhalo_LenType_dm | integer | ||

unused | Subhalo_LenType_unused | integer | ||

tracers | Subhalo_LenType_tracers | integer | ||

stars | Subhalo_LenType_stars | integer | ||

bh | Subhalo_LenType_bh | integer | ||

Mass | Subhalo_Mass | float | \(10^{10}M_\odot/h\) | Total mass of all member particle/cells which are bound to this Subhalo, of all types. Particle/cells bound to subhaloes of this Subhalo are NOT accounted for. |

MassInHalfRad | Subhalo_MassInHalfRad | float | \(10^{10}M_\odot/h\) | Sum of masses of all particles/cells within the stellar half mass radius. |

MassInHalfRadType | float | \(10^{10}M_\odot/h\) | Sum of masses of all particles/cells (split by type) within the stellar half mass radius. | |

gas | Subhalo_MassInHalfRadType_gas | float | ||

dm | Subhalo_MassInHalfRadType_dm | float | ||

unused | Subhalo_MassInHalfRadType_unused | float | ||

tracers | Subhalo_MassInHalfRadType_tracers | float | ||

stars | Subhalo_MassInHalfRadType_stars | float | ||

bh | Subhalo_MassInHalfRadType_bh | float | ||

MassInMaxRad | Subhalo_MassInMaxRad | float | \(10^{10}M_\odot/h\) | Sum of masses of all particles/cells within the radius of \(V_{max}\). |

MassInMaxRadType | float | \(10^{10}M_\odot/h\) | Sum of masses of all particles/cells (split by type) within the radius of \(V_{max}\). | |

gas | Subhalo_MassInMaxRadType_gas | float | ||

dm | Subhalo_MassInMaxRadType_dm | float | ||

unused | Subhalo_MassInMaxRadType_unused | float | ||

tracers | Subhalo_MassInMaxRadType_tracers | float | ||

stars | Subhalo_MassInMaxRadType_stars | float | ||

bh | Subhalo_MassInMaxRadType_bh | float | ||

MassInRad | Subhalo_MassInRad | float | \(10^{10}M_\odot/h\) | Sum of masses of all particles/cells within twice the stellar half mass radius. |

MassInRadType | float | \(10^{10}M_\odot/h\) | Sum of masses of all particles/cells (split by type) within twice the stellar half mass radius. | |

gas | Subhalo_MassInRadType_gas | float | ||

dm | Subhalo_MassInRadType_dm | float | ||

unused | Subhalo_MassInRadType_unused | float | ||

tracers | Subhalo_MassInRadType_tracers | float | ||

stars | Subhalo_MassInRadType_stars | float | ||

bh | Subhalo_MassInRadType_bh | float | ||

MassType | float | \(10^{10}M_\odot/h\) | Total mass of all member particle/cells which are bound to this Subhalo, separated by type. Particle/cells bound to subhaloes of this Subhalo are NOT accounted for. Note: Wind phase cells are counted as gas (type 0) for SubhaloMassType. | |

gas | Subhalo_MassType_gas | float | ||

dm | Subhalo_MassType_dm | float | ||

unused | Subhalo_MassType_unused | float | ||

tracers | Subhalo_MassType_tracers | float | ||

stars | Subhalo_MassType_stars | float | ||

bh | Subhalo_MassType_bh | float | ||

Parent | Subhalo_Parent | integer | Index back into this same Subhalo table of the unique Subfind host/parent of this Subhalo. This index is local to the group (i.e. 2 indicates the third most massive subhalo of the parent halo of this subhalo, not the third most massive of the whole snapshot). The values are often zero for all subhalos of a group, indicating that there is no resolved hierarchical structure in that group, beyond the primary subhalo having as direct children all of the secondary subhalos. | |

Pos | float | ckpc/h | Spatial position within the periodic box of the maximum bound particle. Comoving coordinate. | |

x | Subhalo_Pos_x | float | ||

y | Subhalo_Pos_y | float | ||

z | Subhalo_Pos_z | float | ||

SFR | Subhalo_SFR | float | \(M_\odot/yr\) | Sum of the individual star formation rates of all gas cells in this subhalo. |

SFRinHalfRad | Subhalo_SFRinHalfRad | float | \(M_\odot/yr\) | Same as SubhaloSFR, but restricted to cells within the stellar half mass radius. |

SFRinMaxRad | Subhalo_SFRinMaxRad | float | \(M_\odot/yr\) | Same as SubhaloSFR, but restricted to cells within the radius of \(V_{max}\). |

SFRinRad | Subhalo_SFRinRad | float | \(M_\odot/yr\) | Same as SubhaloSFR, but restricted to cells within twice the stellar half mass radius. |

Spin | float | \((kpc/h)(km/s)\) | Total spin per axis, computed for each as the mass weighted sum of the relative coordinate times relative velocity of all member particles/cells. | |

x | Subhalo_Spin_x | float | ||

y | Subhalo_Spin_y | float | ||

z | Subhalo_Spin_z | float | ||

StarMetalFractions | float | Individual abundances: dimensionless ratio of the total mass in that species divided by the total stellar mass, both restricted to stars within twice the stellar half mass radius. | ||

H | Subhalo_StarMetalFractions_H | float | ||

He | Subhalo_StarMetalFractions_He | float | ||

C | Subhalo_StarMetalFractions_C | float | ||

N | Subhalo_StarMetalFractions_N | float | ||

O | Subhalo_StarMetalFractions_O | float | ||

Ne | Subhalo_StarMetalFractions_Ne | float | ||

Mg | Subhalo_StarMetalFractions_Mg | float | ||

Si | Subhalo_StarMetalFractions_Si | float | ||

Fe | Subhalo_StarMetalFractions_Fe | float | ||

total | Subhalo_StarMetalFractions_total | float | The 'total' of all other (i.e. untracked) metals. | |

StarMetalFractionsHalfRad | float | Same as StarMetalFractions, but restricted to cells within the stellar half mass radius. | ||

H | Subhalo_StarMetalFractionsHalfRad_H | float | ||

He | Subhalo_StarMetalFractionsHalfRad_He | float | ||

C | Subhalo_StarMetalFractionsHalfRad_C | float | ||

N | Subhalo_StarMetalFractionsHalfRad_N | float | ||

O | Subhalo_StarMetalFractionsHalfRad_O | float | ||

Ne | Subhalo_StarMetalFractionsHalfRad_Ne | float | ||

Mg | Subhalo_StarMetalFractionsHalfRad_Mg | float | ||

Si | Subhalo_StarMetalFractionsHalfRad_Si | float | ||

Fe | Subhalo_StarMetalFractionsHalfRad_Fe | float | ||

total | Subhalo_StarMetalFractionsHalfRad_total | float | The 'total' of all other (i.e. untracked) metals. | |

StarMetalFractionsMaxRad | float | Same as StarMetalFractions, but restricted to stars within the radius of $V_{ m max}$. | ||

H | Subhalo_StarMetalFractionsMaxRad_H | float | ||

He | Subhalo_StarMetalFractionsMaxRad_He | float | ||

C | Subhalo_StarMetalFractionsMaxRad_C | float | ||

N | Subhalo_StarMetalFractionsMaxRad_N | float | ||

O | Subhalo_StarMetalFractionsMaxRad_O | float | ||

Ne | Subhalo_StarMetalFractionsMaxRad_Ne | float | ||

Mg | Subhalo_StarMetalFractionsMaxRad_Mg | float | ||

Si | Subhalo_StarMetalFractionsMaxRad_Si | float | ||

Fe | Subhalo_StarMetalFractionsMaxRad_Fe | float | ||

total | Subhalo_StarMetalFractionsMaxRad_total | float | The 'total' of all other (i.e. untracked) metals. | |

StarMetallicity | Subhalo_StarMetallicity | float | - | Mass-weighted average metallicity (Mz/Mtot, where Z = any element above He) of the star particles bound to this Subhalo, but restricted to stars within twice the stellar half mass radius. |

StarMetallicityHalfRad | Subhalo_StarMetallicityHalfRad | float | Same as SubhaloStarMetallicity, but restricted to stars within the stellar half mass radius. | |

StarMetallicityMaxRad | Subhalo_StarMetallicityMaxRad | float | - | Same as SubhaloStarMetallicity, but restricted to stars within the radius of \(V_{max}\). |

StellarPhotometrics | float | mag | Eight bands: U, B, V, K, g, r, i, z. Magnitudes based on the summed-up luminosities of all the stellar particles of the group. For details on the bands, see snapshot table for stars. | |

U | Subhalo_StellarPhotometrics_U | float | ||

B | Subhalo_StellarPhotometrics_B | float | ||

V | Subhalo_StellarPhotometrics_V | float | ||

K | Subhalo_StellarPhotometrics_K | float | ||

g | Subhalo_StellarPhotometrics_g | float | ||

r | Subhalo_StellarPhotometrics_r | float | ||

i | Subhalo_StellarPhotometrics_i | float | ||

z | Subhalo_StellarPhotometrics_z | float | ||

StellarPhotometricsMassInRad | Subhalo_StellarPhotometricsMassInRad | float | \(10^{10}M_\odot/h\) | Sum of the mass of the member stellar particles, but restricted to stars within the radius SubhaloStellarPhotometricsRad. |

StellarPhotometricsRad | Subhalo_StellarPhotometricsRad | float | ckpc/h | Radius at which the surface brightness profile (computed from all member stellar particles) drops below the limit of 20.7 mag arcsec\(^{-2}\) in the K band (in comoving units). |

Vel | float | km/s | Peculiar velocity of the group, computed as the sum of the mass weighted velocities of all particles/cells in this group, of all types. No unit conversion is needed. | |

x | Subhalo_Vel_x | float | ||

y | Subhalo_Vel_y | float | ||

z | Subhalo_Vel_z | float | ||

VelDisp | Subhalo_VelDisp | float | km/s | One-dimensional velocity dispersion of all the member particles/cells (the 3D dispersion divided by \(\sqrt{3}\)). |

Vmax | Subhalo_Vmax | float | km/s | Maximum value of the spherically-averaged rotation curve. |

VmaxRad | Subhalo_VmaxRad | float | kpc/h | Comoving radius of rotation curve maximum (where \(V_{max}\) is achieved). |

WindMass | Subhalo_WindMass | float | \(10^{10}M_\odot/h\) | Sum of masses of all wind-phase cells in this subhalo (with Type==4 and BirthTime<=0). |

CAMELS stands for Cosmology and Astrophysics with MachinE Learning Simulations, and is a suite 4,233 cosmological simulations: 2,049 N-body and 2,184 state-of-the-art (magneto-)hydrodynamic suites.

The CAMELS simulations can be organized in three different suites:

**IllustrisTNG.**This suite contains 1,092 hydrodynamic simulations that have been run with the AREPO code employing the same subgrid physics as the original IllustrisTNG simulations.**SIMBA.**This suite contains 1,092 hydrodynamic simulations that have been run with the GIZMO code employing the same subgrid physics as the original SIMBA simulation.**N-body.**This suite contains 2,049 N-body simulation. For each CAMELS hydrodynamic simulation there is an N-body simulation with the same cosmology and value of the initial random seed as its hydrodynamic counterpart.

Each simulation suite contains four different simulation sets:

**LH.**This set contains 1,000 simulations. Each simulation has a different value of the cosmological and astrophysical parameters, that are arranged in a latin-hypercube. Each simulation has a different value of the initial random seed. This set represents the main CAMELS dataset. LH stands for Latin-Hypercube.**1P.**This set contains 61 simulations. In this set, the value of the cosmological and astrophysical parameters in the simulations is varied only one at a time. The value of the random seed is the same in all simulations. This set is typically used to study the change induced by cosmology and astrophysics in a given quantity. 1P stands for 1-parameter at a time.**CV.**This set contains 27 simulations. All the simulations share the value of the cosmological and astrophysical parameters, and they only differ in the value of their initial random seed. This set is typically used to study the effect of cosmic variance. CV stands for Cosmic Variance.**EX.**This set contains 4 simulations. All simulations share the value of the cosmological parameters, but differ in the value of the astrophysical parameters. One simulation has fiducial values; the other three represent extreme cases with 1) very efficient supernova feedback, 2) very efficient AGN feedback, and 3) no feedback. All simulations share the value of the initial random seed. This set can be used to study the maximum effect astrophysics can have on a given quantity. EX stands for Extreme.

For more information on CAMELS, please consult the documentation and the project website.

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simulation_suite e.g. 'IllustrisTNG' or 'SIMBA'. | simulation_set e.g. 'LH', '1P', 'CV' or 'EX'. | simulation_set_id Integer ID of the simulation set. E.g. for IllustrisTNG LH 12, this value is '12'. | params Simulation parameter: | snap Snapshot number, which can be connected to the redshift of the snapshot. | z Redshift of the snapshot corresponding to this group catalog. | type | id Group index number | Group FoF Halos | Subhalo Subfind Subhalos | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Omega_m The cosmic density of matter relative to the critical density. | sigma_8 The normalization of the primordial density fluctuations. | A_SN1 A normalization factor for the flux of galactic winds. | A_AGN1 A normalization factor for the overall energy output of AGN feedback. | A_SN2 A normalization factor for the speed of galactic winds. | A_AGN2 A normalization factor for the specific energy of AGN feedback. |
BHMass
\(10^{10}M_\odot/h\) Sum of the BH_Mass field of all blackholes (type 5) in this group. |
\(\dot{M}_{\rm BH}\)
\((10^{10}M_\odot/h)/(0.978Gyr/h)\) Sum of the BH_Mdot field of all blackholes (type 5) in this group. |
CM ckpc/h Center of mass of the group, computed as the sum of the mass weighted relative coordinates of all particles/cells in the group, of all types. Comoving coordinate. (Available only for the Illustris-3 run) | FirstSub Index into the Subhalo table of the first/primary/most massive Subfind group within this FoF group. Note: This value is signed (or should be interpreted as signed)! In this case, a value of -1 indicates that this FoF group has no subhalos. | GasMetalFractions Individual abundances: dimensionless ratio of the total mass in that species divided by the total gas mass, for all gas cells in the group. | GasMetallicity Mass-weighted average metallicity (Mz/Mtot, where Z = any element above He) of all gas cells in this FOF group. | \(N_{\rm part}\) Integer counter of the total number of particles/cells of all types in this group. | LenType Integer counter of the total number of particles/cells, split into the six different types, in this group. Note: Wind phase cells are counted as stars (type 4) for GroupLenType. |
\(M_{\rm tot}\)
\(10^{10}M_\odot/h\) Sum of the individual masses of every particle/cell, of all types, in this group. |
MassType \(10^{10}M_\odot/h\) Sum of the individual masses of every particle/cell, split into the six different types, in this group. Note: Wind phase cells are counted as gas (type 0) for GroupMassType. | Nsubs Count of the total number of Subfind groups within this FoF group. | Pos ckpc/h Spatial position within the periodic box of the maximum bound particle. Comoving coordinate. |
SFR
\(M_\odot/yr\) Sum of the individual star formation rates of all gas cells in this group. |
StarMetalFractions Individual abundances: dimensionless ratio of the total mass in that species divided by the total stellar mass, for all stars in the group. | StarMetallicity Mass-weighted average metallicity (Mz/Mtot, where Z = any element above He) of all star particles in this FOF group. | vel km/s/a Velocity of the group, computed as the sum of the mass weighted velocities of all particles/cells in this group, of all types. The peculiar velocity is obtained by multiplying this value by \(1/a.\) |
WindMass
\(10^{10}M_\odot/h\) Sum of the individual masses of all wind phase gas cells (type 4, BirthTime <= 0) in this group. |
M_Crit200
\(10^{10}M_\odot/h\) Total Mass of this group enclosed in a sphere whose mean density is 200 times the critical density of the Universe, at the time the halo is considered. |
M_Crit500
\(10^{10}M_\odot/h\) Total Mass of this group enclosed in a sphere whose mean density is 500 times the critical density of the Universe, at the time the halo is considered. |
M_Mean200
\(10^{10}M_\odot/h\) Total Mass of this group enclosed in a sphere whose mean density is 200 times the mean density of the Universe, at the time the halo is considered. |
M_TopHat200
\(10^{10}M_\odot/h\) Total Mass of this group enclosed in a sphere whose mean density is \(\Delta_c\) times the critical density of the Universe, at the time the halo is considered. \(\Delta_c\) derives from the solution of the collapse of a spherical top-hat perturbation (fitting formula from Bryan+ 1998, http://adsabs.harvard.edu/abs/1998ApJ...495...80B). The subscript 200 can be ignored. |
R_Crit200
ckpc/h Comoving Radius of a sphere centered at the GroupPos of this Group whose mean density is 200 times the critical density of the Universe, at the time the halo is considered. |
R_Crit500
ckpc/h Comoving Radius of a sphere centered at the GroupPos of this Group whose mean density is 500 times the critical density of the Universe, at the time the halo is considered. |
R_Mean200
ckpc/h Comoving Radius of a sphere centered at the GroupPos of this Group whose mean density is 200 times the mean density of the Universe, at the time the halo is considered. |
R_TopHat200
ckpc/h Comoving Radius of a sphere centered at the GroupPos of this Group whose mean density is \(\Delta_c\) times the critical density of the Universe, at the time the halo is considered. |
id Subhalo index number |
BHMass
\(10^{10}M_\odot/h\) Sum of the masses of all blackholes in this subhalo. |
BHMdot
\((10^{10}M_\odot/h)/(0.978Gyr/h)\) Sum of the instantaneous accretion rates \(\dot{M}\) of all blackholes in this subhalo. |
BfldDisk
\((h/a^2)(\rm{UnitPressure})^{1/2}\) The square root of the volume weighted value of $B^{2}$ for all gas cells within the canonical two times the stellar half mass radius. This value gives a magnetic field strength which would have the same amount of mean magnetic energy as the galaxy cells. |
BfldHalo
\((h/a^2)(\rm{UnitPressure})^{1/2}\) The square root of the volume weighted value of $B^{2}$ for all gas cells in the subhalo. This value gives a magnetic field strength which would have the same amount of mean magnetic energy as the subhalo cells. |
CM ckpc/h Comoving center of mass of the Subhalo, computed as the sum of the mass weighted relative coordinates of all particles/cells in the Subhalo, of all types. | GasMetalFractions Individual abundances: dimensionless ratio of the total mass in that species divided by the total gas mass, both restricted to gas cells within twice the stellar half mass radius. | GasMetalFractionsHalfRad Same as SubhaloGasMetalFractions, but restricted to cells within the stellar half mass radius. | GasMetalFractionsMaxRad Same as SubhaloGasMetalFractions, but restricted to cells within the radius of $V_{ m max} | GasMetalFractionsSfr Same as SubhaloGasMetalFractions, but restricted to cells which are star-forming. | GasMetalFractionsSfrWeighted Same as SubhaloGasMetalFractions, but weighted by the cell star-formation rate rather than the cell mass. | GasMetallicity Mass-weighted average metallicity (Mz/Mtot, where Z = any element above He) of the gas cells bound to this Subhalo, but restricted to cells within twice the stellar half mass radius. | GasMetallicityHalfRad Same as SubhaloGasMetallicity, but restricted to cells within the stellar half mass radius. | GasMetallicityMaxRad Same as SubhaloGasMetallicity, but restricted to cells within the radius of \(V_{max}\). | GasMetallicitySfr Mass-weighted average metallicity (Mz/Mtot, where Z = any element above He) of the gas cells bound to this Subhalo, but restricted to cells which are star forming. | GasMetallicitySfrWeighted Same as SubhaloGasMetallicitySfr, but weighted by the cell star-formation rate rather than the cell mass. | GrNr Index into the Group table of the FOF host/parent of this Subhalo. |
HalfmassRad
ckpc/h Comoving radius containing half of the total mass (SubhaloMass) of this Subhalo. |
HalfmassRadType ckpc/h Comoving radius containing half of the mass of this Subhalo split by Type (SubhaloMassType). | IDMostbound The ID of the particle with the smallest binding energy (could be any type). | Len Total number of member particle/cells in this Subhalo, of all types. | LenType Total number of member particle/cells in this Subhalo, separated by type. |
Mass
\(10^{10}M_\odot/h\) Total mass of all member particle/cells which are bound to this Subhalo, of all types. Particle/cells bound to subhaloes of this Subhalo are NOT accounted for. |
MassInHalfRad
\(10^{10}M_\odot/h\) Sum of masses of all particles/cells within the stellar half mass radius. |
MassInHalfRadType \(10^{10}M_\odot/h\) Sum of masses of all particles/cells (split by type) within the stellar half mass radius. |
MassInMaxRad
\(10^{10}M_\odot/h\) Sum of masses of all particles/cells within the radius of \(V_{max}\). |
MassInMaxRadType \(10^{10}M_\odot/h\) Sum of masses of all particles/cells (split by type) within the radius of \(V_{max}\). |
MassInRad
\(10^{10}M_\odot/h\) Sum of masses of all particles/cells within twice the stellar half mass radius. |
MassInRadType \(10^{10}M_\odot/h\) Sum of masses of all particles/cells (split by type) within twice the stellar half mass radius. | MassType \(10^{10}M_\odot/h\) Total mass of all member particle/cells which are bound to this Subhalo, separated by type. Particle/cells bound to subhaloes of this Subhalo are NOT accounted for. Note: Wind phase cells are counted as gas (type 0) for SubhaloMassType. | Parent Index back into this same Subhalo table of the unique Subfind host/parent of this Subhalo. This index is local to the group (i.e. 2 indicates the third most massive subhalo of the parent halo of this subhalo, not the third most massive of the whole snapshot). The values are often zero for all subhalos of a group, indicating that there is no resolved hierarchical structure in that group, beyond the primary subhalo having as direct children all of the secondary subhalos. | Pos ckpc/h Spatial position within the periodic box of the maximum bound particle. Comoving coordinate. |
SFR
\(M_\odot/yr\) Sum of the individual star formation rates of all gas cells in this subhalo. |
SFRinHalfRad
\(M_\odot/yr\) Same as SubhaloSFR, but restricted to cells within the stellar half mass radius. |
SFRinMaxRad
\(M_\odot/yr\) Same as SubhaloSFR, but restricted to cells within the radius of \(V_{max}\). |
SFRinRad
\(M_\odot/yr\) Same as SubhaloSFR, but restricted to cells within twice the stellar half mass radius. |
Spin \((kpc/h)(km/s)\) Total spin per axis, computed for each as the mass weighted sum of the relative coordinate times relative velocity of all member particles/cells. | StarMetalFractions Individual abundances: dimensionless ratio of the total mass in that species divided by the total stellar mass, both restricted to stars within twice the stellar half mass radius. | StarMetalFractionsHalfRad Same as StarMetalFractions, but restricted to cells within the stellar half mass radius. | StarMetalFractionsMaxRad Same as StarMetalFractions, but restricted to stars within the radius of $V_{ m max}$. |
StarMetallicity
- Mass-weighted average metallicity (Mz/Mtot, where Z = any element above He) of the star particles bound to this Subhalo, but restricted to stars within twice the stellar half mass radius. |
StarMetallicityHalfRad Same as SubhaloStarMetallicity, but restricted to stars within the stellar half mass radius. |
StarMetallicityMaxRad
- Same as SubhaloStarMetallicity, but restricted to stars within the radius of \(V_{max}\). |
StellarPhotometrics mag Eight bands: U, B, V, K, g, r, i, z. Magnitudes based on the summed-up luminosities of all the stellar particles of the group. For details on the bands, see snapshot table for stars. |
StellarPhotometricsMassInRad
\(10^{10}M_\odot/h\) Sum of the mass of the member stellar particles, but restricted to stars within the radius SubhaloStellarPhotometricsRad. |
StellarPhotometricsRad
ckpc/h Radius at which the surface brightness profile (computed from all member stellar particles) drops below the limit of 20.7 mag arcsec\(^{-2}\) in the K band (in comoving units). |
Vel km/s Peculiar velocity of the group, computed as the sum of the mass weighted velocities of all particles/cells in this group, of all types. No unit conversion is needed. |
VelDisp
km/s One-dimensional velocity dispersion of all the member particles/cells (the 3D dispersion divided by \(\sqrt{3}\)). |
Vmax
km/s Maximum value of the spherically-averaged rotation curve. |
VmaxRad
kpc/h Comoving radius of rotation curve maximum (where \(V_{max}\) is achieved). |
WindMass
\(10^{10}M_\odot/h\) Sum of masses of all wind-phase cells in this subhalo (with Type==4 and BirthTime<=0). |
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\({\rm CM}_x\) | \({\rm CM}_y\) | \({\rm CM}_z\) | H | He | C | N | O | Ne | Mg | Si | Fe | total The 'total' of all other (i.e. untracked) metals. | \(N_{\rm gas}\) | \(N_{\rm DM}\) | unused | tracers | \(N_{\rm stars}\) | \(N_{\rm BH}\) | \(M_{\rm gas}\) | \(M_{\rm DM}\) | unused | tracers | \(M_{\star}\) | \(M_{\rm BH}\) | x | y | z | H | He | C | N | O | Ne | Mg | Si | Fe | total The 'total' of all other (i.e. untracked) metals. | \(v_x\) | \(v_y\) | \(v_z\) | x | y | z | H | He | C | N | O | Ne | Mg | Si | Fe | total The 'total' of all other (i.e. untracked) metals. | H | He | C | N | O | Ne | Mg | Si | Fe | total The 'total' of all other (i.e. untracked) metals. | H | He | C | N | O | Ne | Mg | Si | Fe | total The 'total' of all other (i.e. untracked) metals. | H | He | C | N | O | Ne | Mg | Si | Fe | total The 'total' of all other (i.e. untracked) metals. | H | He | C | N | O | Ne | Mg | Si | Fe | total The 'total' of all other (i.e. untracked) metals. | gas | dm | unused | tracers | stars | bh | gas | dm | unused | tracers | stars | bh | gas | dm | unused | tracers | stars | bh | gas | dm | unused | tracers | stars | bh | gas | dm | unused | tracers | stars | bh | gas | dm | unused | tracers | stars | bh | x | y | z | x | y | z | H | He | C | N | O | Ne | Mg | Si | Fe | total The 'total' of all other (i.e. untracked) metals. | H | He | C | N | O | Ne | Mg | Si | Fe | total The 'total' of all other (i.e. untracked) metals. | H | He | C | N | O | Ne | Mg | Si | Fe | total The 'total' of all other (i.e. untracked) metals. | U | B | V | K | g | r | i | z | x | y | z |