Table information for 'mdr1.FOF'

General

Table Description: Friends-of-Friends halo catalogue, level 0 with relative linking length 0.17

This table is available for ADQL queries and through the TAP endpoint.

Resource Description: This is an extract of the MultiDark Run 1 simulation data. It is used for testing and demonstration purposes only. The full data is available at https://www.cosmosim.org/.

For a list of all services and tables belonging to this table's resource, see Information on resource 'MDR1 - MultiDark Run 1'

Further information

Extensive documentation is available at https://www.cosmosim.org/. See also: Riebe et al. 2013, The MultiDark Database, AN 334, 691, http://adsabs.harvard.edu/abs/2013AN....334..691R for a description of its predecessor www.multidark.org.

Resource Reference URL: MDR1

Citing this table

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:mdr1_FOF,
  year=2016,
  title={{MDR1} - {MultiDark} Run 1},
  author={Riebe K.},
  url={http://gavo.aip.de/tableinfo/mdr1.FOF},
  howpublished={{VO} resource provided by the {AIP} {DaCHS}}
}

Fields

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
fofId fofId unique id for FOF-group N/A meta.id;meta.main
snapnum snapnum number of snapshot; look into redshifts-table to find the corresponding redshift N/A time.epoch
level level level of substructure, indicates the different linking lengths N/A N/A
NInFile NInFile line number of FOF-group in original catalogue file (= rank in file) N/A meta.id
x x comoving position, x-component h-1.Mpc pos.cartesian.x
y y comoving position, y-component h-1.Mpc pos.cartesian.y
z z comoving position, z-component h-1.Mpc pos.cartesian.z
vx vx peculiar velocity, x-component km/s phys.veloc;pos.cartesian.x
vy vy peculiar velocity, y-component km/s phys.veloc;pos.cartesian.y
vz vz peculiar velocity, z-component km/s phys.veloc;pos.cartesian.z
np np number of particles inside the FOF group ('halo') N/A meta.number
mass mass total mass of the FOF group h-1.solMass phys.mass
size size 'radius' of the FOF group, if it were a sphere, computed based on the volume h-1.Mpc phys.size.radius
disp disp dispersion h-1.Mpc phys.dispMeasure
disp_v disp_v velocity dispersion km/s phys.veloc.dispersion
delta delta overdensity (mass/volume) in terms of mean background density rho_b N/A phys.density;arith.ratio
spin spin spin parameter (Gottloeber and Yepes 2007, ApJ 664, 117) N/A N/A
angMom_x angMom_x angular momentum, x-component h-2.solMass.Mpc.km/s phys.angMomentum;pos.cartesian.x
angMom_y angMom_y angular momentum, y-component h-2.solMass.Mpc.km/s phys.angMomentum;pos.cartesian.y
angMom_z angMom_z angular momentum, z-component h-2.solMass.Mpc.km/s phys.angMomentum;pos.cartesian.z
angMom angMom absolute value of angular momentum h-2.solMass.Mpc.km/s phys.angMomentum
axis1 axis1 major axis of the ellipsoidal shape, not normalized N/A N/A
axis2 axis2 intermediate axis of the ellipsoidal shape, not normalized N/A N/A
axis3 axis3 minor axis of the ellipsoidal shape, not normalized N/A N/A
axis1_x axis1_x direction of major axis, unit eigenvector of the inertia tensor, x-component N/A N/A
axis1_y axis1_y direction of major axis, y-component N/A N/A
axis1_z axis1_z direction of major axis, z-component N/A N/A
axis2_x axis2_x direction of intermediate axis, unit eigenvector of the inertia tensor, x-component N/A N/A
axis2_y axis2_y direction of intermediate axis, y-component N/A N/A
axis2_z axis2_z direction of intermediate axis, z-component N/A N/A
axis3_x axis3_x direction of minor axis, unit eigenvector of the inertia tensor, x-component N/A N/A
axis3_y axis3_y direction of minor axis, y-component N/A N/A
axis3_z axis3_z direction of minor axis, z-component N/A N/A
ix ix spatial index, x-direction N/A pos.cartesian.x
iy iy spatial index, y-direction N/A pos.cartesian.y
iz iz spatial index, z-direction N/A pos.cartesian.z
phkey phkey Peano-Hilbert key N/A N/A

Columns that are parts of indices are marked like this.

Other

VOResource

VO nerds may sometimes need VOResource XML for this table.

More Information on the Base Resource

Extensive documentation is available at https://www.cosmosim.org/. See also: Riebe et al. 2013, The MultiDark Database, AN 334, 691, http://adsabs.harvard.edu/abs/2013AN....334..691R for a description of its predecessor www.multidark.org.