|
This table contains the dark-matter particles of the milli-Millennium simulation.
Ordered by Snapnum and phKey. This is used in a number of functions that
can query the particles in subvolumes (sphere and boxes) of the simulation volume.
| column | type | UCD | unit | description |
|---|
|
snapnum |
smallint |
|
|
The identifier of the snapshot for the particle. See the
millimil..snapshots table to find the redshift
and other time variables corresponding to this snapnum. |
|
phkey |
int |
|
|
The Peano-Hilbert key corresponding to the position of this particle. Based on a 323 grid. |
|
x |
real |
|
Mpc/h |
|
|
y |
real |
|
Mpc/h |
|
|
z |
real |
|
Mpc/h |
|
|
vx |
real |
|
km/s |
|
|
vy |
real |
|
km/s |
|
|
vz |
real |
|
km/s |
|
|
id |
bigint |
|
|
The unique identifier of this particle. Allows one to trace the particle in different timesteps
and is also the ID used by the MillimilSnapshotIDs table linking the particle to FOF groups and
Subhalos. |
| 