Rockstar (bolshoip.rockstar)

The table has 2309385984 rows, 80 columns.

Description

Rockstar halo catalogue with consistent merger trees

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
dbid long meta.id
meta.main

unique database id for the halo
rockstarid long meta.id
meta.main

unique id for the halo, same as in Rockstar catalogue
scale double time.epoch

scale factor, same as aexp in Redshifts-table
desc_scale double time.epoch

scale factor of the descendant halo, if there is one
descid long meta.id.assoc

rockstarId of the descendant
nprog int meta.number

number of progenitors
pid long meta.id.assoc

rockstarId of least massive host halo, -1 if it is a distinct halo
upid long meta.id.assoc

rockstarId of most massive host halo, only different from pid, if halo lies within two or more larger halos
desc_pid long meta.id.assoc

pId of the descendant halo, if applicable
phantom short meta.code

flag for phantom halos, non-zero if the halo is interpolated across timesteps
mvir_sam double phys.mass h-1.solMass

halo mass, smoothed across accretion history; always greater than the sum of halo masses of contributing progenitors; only for use with selected semi-analytic models
mvir double phys.mass h-1.solMass

halo mass (within virial radius)
rvir double phys.size.radius h-1.kpc

halo radius (comoving)
rs double phys.size.radius h-1.kpc

scale radius (comoving)
vrms double phys.veloc.dispersion km.s-1

velocity dispersion (physical)
mmp short

flag indicating if the halo is the most massive progenitor or not
lastmm_scale double

scale factor of the last major merger (mass ratio > 0.3)
vmax double phys.veloc km.s-1

maximum circular velocity (physical)
x double pos.cartesian.x h-1.Mpc

halo position, comoving
y double pos.cartesian.y h-1.Mpc

halo position, comoving
z double pos.cartesian.z h-1.Mpc

halo position, comoving
vx double phys.veloc
pos.cartesian.x 		km.s-1

halo velocity, physical
vy double phys.veloc
pos.cartesian.y 		km.s-1

halo velocity, physical
vz double phys.veloc
pos.cartesian.z 		km.s-1

halo velocity, physical
angmom_x double phys.angMomentum
pos.cartesian.x 		h-2.solMass.Mpc.km.s-1

halo angular momentum
angmom_y double phys.angMomentum
pos.cartesian.y 		h-2.solMass.Mpc.km.s-1

halo angular momentum
angmom_z double phys.angMomentum
pos.cartesian.z 		h-2.solMass.Mpc.km.s-1

halo angular momentum
spin double

halo spin parameter
breadthfirstid long meta.id

Id for breadth-first ordering of halos within a tree
depthfirstid long meta.id

Id for depth-first ordering of halos within a tree
treerootid long meta.id.assoc

rockstarId of the halo at the last timestep in the tree
forestid long
orighaloid long meta.id.cross

original halo Id from halo finder
rockstar_snapnum int time.epoch

snapshot number (from which the halo originated), subsequent numbers for Rockstar catalogue
snapnum int time.epoch

snapshot number (from which the halo originated), same as in other halo catalogues
nextcoprog_depthfirstid long meta.id.assoc

depthFirstId of next coprogenitor
mainleaf_depthfirstid long meta.id.assoc

depthFirstId of last leaf on the main branch
lastprog_depthfirstid long meta.id.assoc

depthFirstId of last progenitor
rs_klypin double phys.size.radius

Scale radius determined using Vmax and Mvir (see Rockstar paper)
mvir_all double phys.mass h-1.solMass

Mass enclosed within the specified overdensity, including unbound particles
m200b double phys.mass h-1.solMass

Mass enclosed within overdensity 200*rho_b
m200c double phys.mass h-1.solMass

Mass enclosed within overdensity 200*rho_crit
m500c double phys.mass h-1.solMass

Mass enclosed within overdensity 500*rho_crit
m2500c double phys.mass h-1.solMass

Mass enclosed within overdensity 2500*rho_crit
xoff double pos.distance h-1.kpc

Offset of density peak from average particle position, comoving
voff double phys.veloc
arith.diff 		km.s-1

Offset of density peak from average particle velocity, comoving
axisratio_2_1 double

ratio of second largest shape ellipsoid axes to largest shape ellipsoid axis;shapes determined by method in Allgood et al. (2006)
spin_bullock double

Bullock spin parameter (J/(sqrt(2)*GMVR))
axisratio_3_1 double

ratio of smallest shape ellipsoid axes to largest shape ellipsoid axis
axis1_x double h-1.kpc

coordinate of largest shape ellipsoid axis, comoving
axis1_y double h-1.kpc

coordinate of largest shape ellipsoid axis, comoving
axis1_z double h-1.kpc

coordinate of largest shape ellipsoid axis, comoving
axisratio_2_1_500c double

ratio of second largest shape ellipsoid axes to largest shape ellipsoid axis, for particles within overdensity 500*rho_crit
axisratio_3_1_500c double

ratio of smallest shape ellipsoid axes to largest shape ellipsoid axis, for particles within overdensity 500*rho_crit
axis1_x_500c double h-1.kpc

coordinate of largest shape ellipsoid axis, for particles within overdensity 500*rho_crit, comoving
axis1_y_500c double h-1.kpc

coordinate of largest shape ellipsoid axis, for particles within overdensity 500*rho_crit, comoving
axis1_z_500c double h-1.kpc

coordinate of largest shape ellipsoid axis, for particles within overdensity 500*rho_crit, comoving
t_u double phys.energy
arith.ratio

ratio of kinetic to potential energies
m_pe_behroozi double phys.mass h-1.solMass

Pseudo-evolution corrected masses (very experimental)
m_pe_diemer double phys.mass h-1.solMass

Pseudo-evolution corrected masses (very experimental)
macc double phys.mass h-1.solMass

halo mass at accretion of the halo to its host
mpeak double phys.mass h-1.solMass

peak mass over accretion history
vacc double phys.veloc km.s-1

Vmax at accretion
halfmass_scale double time.epoch

scale factor at which the most massive progenitor (mmp) reaches 0.5*Mpeak
vpeak double phys.veloc km.s-1

peak Vmax over accretion history
accrate_inst double h-1.solMass.yr-1

instantaneous halo mass accretion rate
accrate_100myr double h-1.solMass.yr-1

halo mass accretion rate averaged over passt 100 Myr
accrate_1tdyn double h-1.solMass.yr-1

halo mass accretion rate averaged over past 1*virial dynamical time
accrate_2tdyn double h-1.solMass.yr-1

halo mass accretion rate averaged over past 2*virial dynamical time
accrate_mpeak double h-1.solMass.yr-1

growth rate of Mpeak, averaged from current z to z+0.5
mpeak_scale double time.epoch

scale factor at which Mpeak was reached
acc_scale double time.epoch

scale factor at which satellites were accreted
first_acc_scale double time.epoch

scale factor at which current and former satellites first passed through a larger halo
first_acc_mvir double phys.mass h-1.solMass

Mvir at First_Acc_scale
first_acc_vmax double phys.veloc km.s-1

Vmax at First_Acc_scale
ix int pos.cartesian.x

spatial grid index, x-direction
vmax_mpeak double phys.veloc km.s-1

halo Vmax at the scale at which Mpeak was reached
iy int pos.cartesian.y

spatial grid index, y-direction
iz int pos.cartesian.z

spatial grid index, z-direction
phkey int

Peano-Hilbert key index of space-filling curve