Range:
{{filter.render(filter.aggs.min)}}
{{filter.render(filter.aggs.max)}}
Example python code to apply the above filters and retrieve data. To use, download and install this module.
| Field | Variable | Type | Units | Description |
|---|---|---|---|---|
| simulation | simulation | byte | e.g. 'Illustris-1' or 'Illustris-2-Dark'. | |
| snap | snapshot | short | snapshot number | |
| time | time | float | Scalefactor of the snapshot corresponding to this group catalog. | |
| z | redshift | float | Redshift of the snapshot corresponding to this group catalog. | |
| id | id | integer | Group index number | |
| BHMass | BHMass | float | \(10^{10}M_\odot/h\) | Sum of the BH_Mass field of all blackholes (type 5) in this group. |
| \(\dot{M}_{\rm BH}\) | 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) | |
| \({\rm CM}_x\) | CM_x | float | ||
| \({\rm CM}_y\) | CM_y | float | ||
| \({\rm CM}_z\) | CM_z | float | ||
| FirstSub | FirstSub | integer | Index into the <code>Subhalo</code> 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. | |
| GasMetallicity | GasMetallicity | float | Mass-weighted average metallicity (Mz/Mtot, where Z = any element above He) of all gas cells in this FOF group. | |
| \(N_{\rm part}\) | 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. | ||
| \(N_{\rm gas}\) | LenType_gas | integer | ||
| \(N_{\rm DM}\) | LenType_dm | integer | ||
| unused | LenType_unused | integer | ||
| tracers | LenType_tracers | integer | ||
| \(N_{\rm stars}\) | LenType_stars | integer | ||
| \(N_{\rm BH}\) | LenType_bh | integer | ||
| \(M_{\rm tot}\) | 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. | |
| \(M_{\rm gas}\) | MassType_gas | float | ||
| \(M_{\rm DM}\) | MassType_dm | float | ||
| unused | MassType_unused | float | ||
| tracers | MassType_tracers | float | ||
| \(M_{\star}\) | MassType_stars | float | ||
| \(M_{\rm BH}\) | MassType_bh | float | ||
| Nsubs | 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 | Pos_x | float | ||
| y | Pos_y | float | ||
| z | Pos_z | float | ||
| SFR | SFR | float | \(M_\odot/yr\) | Sum of the individual star formation rates of all gas cells in this group. |
| StarMetallicity | 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 \(1/a.\) | |
| \(v_x\) | Vel_x | float | ||
| \(v_y\) | Vel_y | float | ||
| \(v_z\) | Vel_z | float | ||
| WindMass | 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 | 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 | 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 | 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 | 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 <a href="http://adsabs.harvard.edu/abs/1998ApJ...495...80B">Bryan+ 1998</a>). The subscript 200 can be ignored. |
| R_Crit200 | 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 | 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 | 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 | 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. |
| SnapByType | long | |||
| gas | SnapByType_gas | long | ||
| dm | SnapByType_dm | long | ||
| unused | SnapByType_unused | long | ||
| tracers | SnapByType_tracers | long | ||
| stars | SnapByType_stars | long | ||
| bh | SnapByType_bh | long | ||
| FuzzByType | long | |||
| gas | FuzzByType_gas | long | ||
| dm | FuzzByType_dm | long | ||
| unused | FuzzByType_unused | long | ||
| tracers | FuzzByType_tracers | long | ||
| stars | FuzzByType_stars | long | ||
| bh | FuzzByType_bh | long |
Nelson+ (2015), Illustris FoF Halo catalog derived with a standard friends-of-friends (FoF) algorithm.
| simulatione.g. 'Illustris-1' or 'Illustris-2-Dark'. | snapsnapshot number | timeScalefactor of the snapshot corresponding to this group catalog. | zRedshift of the snapshot corresponding to this group catalog. | idGroup index number | 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. | CMckpc/hCenter 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) | FirstSubIndex into the <code>Subhalo</code> 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. | GasMetallicityMass-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. | LenTypeInteger 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. | NsubsCount of the total number of Subfind groups within this FoF group. | Posckpc/hSpatial 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. | StarMetallicityMass-weighted average metallicity (Mz/Mtot, where Z = any element above He) of all star particles in this FOF group. | velkm/s/aVelocity 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 <a href="http://adsabs.harvard.edu/abs/1998ApJ...495...80B">Bryan+ 1998</a>). The subscript 200 can be ignored. | R_Crit200 ckpc/hComoving 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/hComoving 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/hComoving 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/hComoving 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. | SnapByType | FuzzByType | ||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| \({\rm CM}_x\) | \({\rm CM}_y\) | \({\rm CM}_z\) | \(N_{\rm gas}\) | \(N_{\rm DM}\) | unused | tracers | \(N_{\rm stars}\) | \(N_{\rm BH}\) | \(M_{\rm gas}\) | \(M_{\rm DM}\) | unused | tracers | \(M_{\star}\) | \(M_{\rm BH}\) | x | y | z | \(v_x\) | \(v_y\) | \(v_z\) | gas | dm | unused | tracers | stars | bh | gas | dm | unused | tracers | stars | bh | |||||||||||||||||||||||