BolshoiP – Rockstar

Description

Rockstar halo catalogue with consistent merger trees

The table data can be extracted using the query interface.

General information on Rockstar tables is also available at Tables – Rockstar.

Please cite this data set using the unique digital object identifier doi:10.17876/cosmosim/bolshoip/009.

Columns

ColumnTypeUCDUnitDescription
dbIdbigintmeta.id
meta.main
unique database id for the halo
rockstarIdbigintmeta.id
meta.main
unique id for the halo, same as in Rockstar catalogue
scalefloattime.epochscale factor, same as aexp in Redshifts-table
desc_scalefloattime.epochscale factor of the descendant halo, if there is one
descIdbigintmeta.id.assocrockstarId of the descendant
nprogintmeta.numbernumber of progenitors
pIdbigintmeta.id.assocrockstarId of least massive host halo, -1 if it is a destinct halo
upIdbigintmeta.id.assocrockstarId of most massive host halo, only different from pid, if halo lies within two or more larger halos
desc_pIdbigintmeta.id.assocpId of the descendant halo, if applicable
phantomsmallintmeta.codeflag for phantom halos, non-zero if the halo is interpolated across timesteps
Mvir_SAMfloatphys.massh-1.solMasshalo mass, smoothed across accretion history;always greater than the sum of halo masses of contributing progenitors;only for use with selected semi-analytic models
Mvirfloatphys.massh-1.solMasshalo mass (within virial radius)
Rvirfloatphys.size.radiush-1.kpchalo radius (comoving)
Rsfloatphys.size.radiush-1.kpcscale radius (comoving)
Vrmsfloatphys.veloc.dispersionkm/svelocity dispersion (physical)
mmpsmallintflag indicating if the halo is the most massive progenitor or not
lastMM_scalefloatscale factor of the last major merger (mass ratio > 0.3)
Vmaxfloatphys.velockm/smaximum circular velocity (physical)
xfloatpos.cartesian.xh-1.Mpchalo position, comoving
yfloatpos.cartesian.yh-1.Mpchalo position, comoving
zfloatpos.cartesian.zh-1.Mpchalo position, comoving
vxfloatphys.veloc
pos.cartesian.x
km/shalo velocity, physical
vyfloatphys.veloc
pos.cartesian.y
km/shalo velocity, physical
vzfloatphys.veloc
pos.cartesian.z
km/shalo velocity, physical
angMom_xfloatphys.angMomentum
pos.cartesian.x
h-2.solMass.Mpc.km/shalo angular momentum
angMom_yfloatphys.angMomentum
pos.cartesian.y
h-2.solMass.Mpc.km/shalo angular momentum
angMom_zfloatphys.angMomentum
pos.cartesian.z
h-2.solMass.Mpc.km/shalo angular momentum
spinfloathalo spin parameter
breadthFirstIdbigintmeta.idId for breadth-first ordering of halos within a tree
depthFirstIdbigintmeta.idId for depth-first ordering of halos within a tree
treeRootIdbigintmeta.id.assocrockstarId of the halo at the last timestep in the tree
origHaloIdbigintmeta.id.crossoriginal halo Id from halo finder
rockstar_snapnuminttime.epochsnapshot number (from which the halo originated), subsequent numbers for Rockstar catalogue
snapnuminttime.epochsnapshot number (from which the halo originated), same as in other halo catalogues
nextCoprog_depthFirstIdbigintmeta.id.assocdepthFirstId of next coprogenitor
mainLeaf_depthFirstIdbigintmeta.id.assocdepthFirstId of last leaf on the main branch
lastProg_depthFirstIdbigintmeta.id.assocdepthFirstId of last progenitor
Rs_Klypinfloatphys.size.radiusScale radius determined using Vmax and Mvir (see Rockstar paper)
Mvir_allfloatphys.massh-1.solMassMass enclosed within the specified overdensity, including unbound particles
M200bfloatphys.massh-1.solMassMass enclosed within overdensity 200*rho_b
M200cfloatphys.massh-1.solMassMass enclosed within overdensity 200*rho_crit
M500cfloatphys.massh-1.solMassMass enclosed within overdensity 500*rho_crit
M2500cfloatphys.massh-1.solMassMass enclosed within overdensity 2500*rho_crit
Xofffloatpos.distanceh-1.kpcOffset of density peak from average particle position, comoving
Vofffloatphys.veloc
arith.diff
km/sOffset of density peak from average particle velocity, comoving
spin_BullockfloatBullock spin parameter (J/(sqrt(2)*GMVR))
axisratio_2_1floatratio of second largest shape ellipsoid axes to largest shape ellipsoid axis;shapes determined by method in Allgood et al. (2006)
axisratio_3_1floatratio of smallest shape ellipsoid axes to largest shape ellipsoid axis
axis1_xfloath-1.kpccoordinate of largest shape ellipsoid axis, comoving
axis1_yfloath-1.kpccoordinate of largest shape ellipsoid axis, comoving
axis1_zfloath-1.kpccoordinate of largest shape ellipsoid axis, comoving
axisratio_2_1_500cfloatratio of second largest shape ellipsoid axes to largest shape ellipsoid axis, for particles within overdensity 500*rho_crit
axisratio_3_1_500cfloatratio of smallest shape ellipsoid axes to largest shape ellipsoid axis, for particles within overdensity 500*rho_crit
axis1_x_500cfloath-1.kpccoordinate of largest shape ellipsoid axis, for particles within overdensity 500*rho_crit, comoving
axis1_y_500cfloath-1.kpccoordinate of largest shape ellipsoid axis, for particles within overdensity 500*rho_crit, comoving
axis1_z_500cfloath-1.kpccoordinate of largest shape ellipsoid axis, for particles within overdensity 500*rho_crit, comoving
T_Ufloatphys.energy
arith.ratio
ratio of kinetic to potential energies
M_pe_Behroozifloatphys.massh-1.solMassPseudo-evolution corrected masses (very experimental)
M_pe_Diemerfloatphys.massh-1.solMassPseudo-evolution corrected masses (very experimental)
Maccfloatphys.massh-1.solMasshalo mass at accretion of the halo to its host
Mpeakfloatphys.massh-1.solMasspeak mass over accretion history
Vaccfloatphys.velockm/sVmax at accretion
Vpeakfloatphys.velockm/speak Vmax over accretion history
halfmass_scalefloattime.epochscale factor at which the most massive progenitor (mmp) reaches 0.5*Mpeak
accRate_Instfloath-1.solMass/yrinstantaneous halo mass accretion rate
accRate_100Myrfloath-1.solMass/yrhalo mass accretion rate averaged over passt 100 Myr
accRate_1Tdynfloath-1.solMass/yrhalo mass accretion rate averaged over past 1*virial dynamical time
accRate_2Tdynfloath-1.solMass/yrhalo mass accretion rate averaged over past 2*virial dynamical time
accRate_Mpeakfloath-1.solMass/yrgrowth rate of Mpeak, averaged from current z to z+0.5
Mpeak_scalefloattime.epochscale factor at which Mpeak was reached
Acc_scalefloattime.epochscale factor at which satellites were accreted
First_Acc_scalefloattime.epochscale factor at which current and former satellites first passed through a larger halo
First_Acc_Mvirfloatphys.massh-1.solMassMvir at First_Acc_scale
First_Acc_Vmaxfloatphys.velockm/sVmax at First_Acc_scale
Vmax_Mpeakfloatphys.velockm/shalo Vmax at the scale at which Mpeak was reached
ixintpos.cartesian.xspatial grid index, x-direction
iyintpos.cartesian.yspatial grid index, y-direction
izintpos.cartesian.zspatial grid index, z-direction
phkeyintPeano-Hilbert key index of space-filling curve

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