BigMDPL – 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/bigmdpl/001.

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
forestIdbigintmeta.id.assocrockstarId of forest to which the halo with the given treeRootId belongs
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)
Rhalfmassfloatphys.radiush-1.kpcRadius within which 1/2 of Mvir is enclosed
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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