FOFSub (mdr1.fofsub)
The table has 32192552 rows, 23 columns.
Description
FOF substructure tree connecting the FOF – FOF4 catalogues at snapnum=85 (z=0).
Attribution
In order to properly acknowledge our efforts, we request the following paragraph to be included in the "Acknowledgements" section of any publication which makes use of the simulation data above via the CosmoSim or MultiDark database:
Acknowledgements – Database
The CosmoSim database used in this paper is a service by the Leibniz-Institute for Astrophysics Potsdam (AIP). The MultiDark database was developed in cooperation with the Spanish MultiDark Consolider Project CSD2009-00064.
Acknowledgements – Simulations
The authors gratefully acknowledge the Gauss Centre for Supercomputing e.V. (www.gauss-centre.eu) and the Partnership for Advanced Supercomputing in Europe (PRACE, www.prace-ri.eu) for funding the MultiDark simulation project by providing computing time on the GCS Supercomputer SuperMUC at Leibniz Supercomputing Centre (LRZ, www.lrz.de). The Bolshoi simulations have been performed within the Bolshoi project of the University of California High-Performance AstroComputing Center (UC-HiPACC) and were run at the NASA Ames Research Center.
More information can be found on the credit page.
Columns
| Name | Type | UCD | Unit | Description |
|---|---|---|---|---|
| fofsubid | long |
meta.id meta.main |
unique id for FOF-group, = treeRootId + rank in substructure tree (depth first order) |
|
| fofid | long | time.epoch |
fofId in corresponding FOF-table (FOF - FOF4) |
|
| level | short |
level of substructure, indicates the different linking lengths |
||
| ninfile | int | meta.id |
line number of FOF-group in original catalogue file (= rank in file) |
|
| hostid | long | meta.id.assoc |
fofSubId of the direct host |
|
| lastsubid | long | meta.id.assoc |
fofSubId of last subhalo in depth-first order substructure tree |
|
| mainleafid | long | meta.id.assoc |
fofSubId of last leaf on main branch of substructure tree; "main branch" is defined as the branch along the most massive substructures |
|
| treerootid | long | meta.id.assoc |
root of the substructure tree (group with largest linking length) |
|
| nloose | int | meta.number |
number of particles not associated with any substructure of this group |
|
| x | double | pos.cartesian.x | h-1.Mpc |
comoving position, x-component |
| y | double | pos.cartesian.y | h-1.Mpc |
comoving position, y-component |
| z | double | pos.cartesian.z | h-1.Mpc |
comoving position, z-component |
| vx | double |
phys.veloc pos.cartesian.x |
km.s-1 |
peculiar velocity, x-component |
| vy | double |
phys.veloc pos.cartesian.y |
km.s-1 |
peculiar velocity, y-component |
| vz | double |
phys.veloc pos.cartesian.z |
km.s-1 |
peculiar velocity, z-component |
| np | int | meta.number |
number of particles inside the FOF group |
|
| mass | double | phys.mass | h-1.solMass |
total mass of the FOF group |
| size | double | phys.size.radius | h-1.Mpc |
"radius" of the FOF group, if it were a sphere, computed based on the volume |
| spin | double |
spin parameter (Gottlöber & Yepes 2007, ApJ 664, 117) |
||
| ix | int | pos.cartesian.x |
spatial index, x-direction |
|
| iy | int | pos.cartesian.y |
spatial index, y-direction |
|
| iz | int | pos.cartesian.z |
spatial index, z-direction |
|
| phkey | int |
Peano-Hilbert key |