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TREE `1 ( D h J xP ^ 8 8e x j Hp } 0 X ` ha ( X ( 8 H 8 p HEAP x Ї Consistent Trees_columns scale(0) id(1) desc_scale(2) desc_id(3) num_prog(4) pid(5) upid(6) desc_pid(7) phantom(8) sam_Mvir(9) Mvir(10) Rvir(11) rs(12) vrms(13) mmp?(14) scale_of_last_MM(15) vmax(16) x(17) y(18) z(19) vx(20) vy(21) vz(22) Jx(23) Jy(24) Jz(25) Spin(26) Breadth_first_ID(27) Depth_first_ID(28) Tree_root_ID(29) Orig_halo_ID(30) Snap_idx(31) Next_coprogenitor_depthfirst_ID(32) Last_progenitor_depthfirst_ID(33) Last_mainleaf_depthfirst_ID(34) Tidal_Force(35) Tidal_ID(36) Rs_Klypin(37) Mvir_all(38) M200b(39) M200c(40) M500c(41) M2500c(42) Xoff(43) Voff(44) Spin_Bullock(45) b_to_a(46) c_to_a(47) A[x](48) A[y](49) A[z](50) b_to_a(500c)(51) c_to_a(500c)(52) A[x](500c)(53) A[y](500c)(54) A[z](500c)(55) T/|U|(56) M_pe_Behroozi(57) M_pe_Diemer(58) Halfmass_Radius(59) rvmax(60) Macc(61) Mpeak(62) Vacc(63) Vpeak(64) Halfmass_Scale(65) Acc_Rate_Inst(66) Acc_Rate_100Myr(67) Acc_Rate_1*Tdyn(68) Acc_Rate_2*Tdyn(69) Acc_Rate_Mpeak(70) Acc_Log_Vmax_Inst(71) Acc_Log_Vmax_1*Tdyn(72) Mpeak_Scale(73) Acc_Scale(74) First_Acc_Scale(75) First_Acc_Mvir(76) First_Acc_Vmax(77) Vmax\@Mpeak(78) Tidal_Force_Tdyn(79) Log_(Vmax/Vmax_max(Tdyn;Tmpeak))(80) Time_to_future_merger(81) Future_merger_MMP_ID(82) Consistent Trees_metadata #scale(0) id(1) desc_scale(2) desc_id(3) num_prog(4) pid(5) upid(6) desc_pid(7) phantom(8) sam_Mvir(9) Mvir(10) Rvir(11) rs(12) vrms(13) mmp?(14) scale_of_last_MM(15) vmax(16) x(17) y(18) z(19) vx(20) vy(21) vz(22) Jx(23) Jy(24) Jz(25) Spin(26) Breadth_first_ID(27) Depth_first_ID(28) Tree_root_ID(29) Orig_halo_ID(30) Snap_idx(31) Next_coprogenitor_depthfirst_ID(32) Last_progenitor_depthfirst_ID(33) Last_mainleaf_depthfirst_ID(34) Tidal_Force(35) Tidal_ID(36) Rs_Klypin(37) Mvir_all(38) M200b(39) M200c(40) M500c(41) M2500c(42) Xoff(43) Voff(44) Spin_Bullock(45) b_to_a(46) c_to_a(47) A[x](48) A[y](49) A[z](50) b_to_a(500c)(51) c_to_a(500c)(52) A[x](500c)(53) A[y](500c)(54) A[z](500c)(55) T/|U|(56) M_pe_Behroozi(57) M_pe_Diemer(58) Halfmass_Radius(59) rvmax(60) Macc(61) Mpeak(62) Vacc(63) Vpeak(64) Halfmass_Scale(65) Acc_Rate_Inst(66) Acc_Rate_100Myr(67) Acc_Rate_1*Tdyn(68) Acc_Rate_2*Tdyn(69) Acc_Rate_Mpeak(70) Acc_Log_Vmax_Inst(71) Acc_Log_Vmax_1*Tdyn(72) Mpeak_Scale(73) Acc_Scale(74) First_Acc_Scale(75) First_Acc_Mvir(76) First_Acc_Vmax(77) Vmax\@Mpeak(78) Tidal_Force_Tdyn(79) Log_(Vmax/Vmax_max(Tdyn;Tmpeak))(80) Time_to_future_merger(81) Future_merger_MMP_ID(82)
#Omega_M = 0.308900; Omega_L = 0.691100; h0 = 0.677400
#Full box size = 2000.000000 Mpc/h
#Scale: Scale factor of halo.
#ID: ID of halo (unique across entire simulation).
#Desc_Scale: Scale of descendant halo, if applicable.
#Descid: ID of descendant halo, if applicable.
#Num_prog: Number of progenitors.
#Pid: ID of least massive host halo (-1 if distinct halo).
#Upid: ID of most massive host halo (different from Pid when the halo is within two or more larger halos).
#Desc_pid: Pid of descendant halo (if applicable).
#Phantom: Nonzero for halos interpolated across timesteps.
#SAM_Mvir: Halo mass, smoothed across accretion history; always greater than sum of halo masses of contributing progenitors (Msun/h). Only for use with select semi-analytical models.
#Mvir: Halo mass (Msun/h).
#Rvir: Halo radius (kpc/h comoving).
#Rs: Scale radius (kpc/h comoving).
#Vrms: Velocity dispersion (km/s physical).
#mmp?: whether the halo is the most massive progenitor or not.
#scale_of_last_MM: scale factor of the last major merger (Mass ratio > 0.3).
#Vmax: Maxmimum circular velocity (km/s physical).
#X/Y/Z: Halo position (Mpc/h comoving).
#VX/VY/VZ: Halo velocity (km/s physical, peculiar).
#JX/JY/JZ: Halo angular momenta ((Msun/h) * (Mpc/h) * km/s (physical)).
#Spin: Halo spin parameter.
#Breadth_first_ID: breadth-first ordering of halos within a tree.
#Depth_first_ID: depth-first ordering of halos within a tree.
#Tree_root_ID: ID of the halo at the last timestep in the tree.
#Orig_halo_ID: Original halo ID from halo finder.
#Snap_idx: Index of snapshot (in original snapshot list) from which halo originated.
#Next_coprogenitor_depthfirst_ID: Depthfirst ID of next coprogenitor.
#Last_progenitor_depthfirst_ID: Depthfirst ID of last progenitor.
#Last_mainleaf_depthfirst_ID: Depthfirst ID of last progenitor on main progenitor branch.
#Tidal_Force: Strongest tidal force from any nearby halo, in dimensionless units (Rhalo / Rhill).
#Tidal_ID: ID of halo exerting strongest tidal force.
#Rs_Klypin: Scale radius determined using Vmax and Mvir (see Rockstar paper)
#Mvir_all: Mass enclosed within the specified overdensity, including unbound particles (Msun/h)
#M200b--M2500c: Mass enclosed within specified overdensities (Msun/h)
#Xoff: Offset of density peak from average particle position (kpc/h comoving)
#Voff: Offset of density peak from average particle velocity (km/s physical)
#Spin_Bullock: Bullock spin parameter (J/(sqrt(2)*MVR))
#b_to_a, c_to_a: Ratio of second and third largest shape ellipsoid axes (B and C) to largest shape ellipsoid axis (A) (dimensionless).
# Shapes are determined by the method in Allgood et al. (2006).
# (500c) indicates that only particles within R500c are considered.
#A[x],A[y],A[z]: Largest shape ellipsoid axis (kpc/h comoving)
#T/|U|: ratio of kinetic to potential energies
#M_pe_*: Pseudo-evolution corrected masses (very experimental)
#Halfmass_Radius rvmax: Radius within which 1/2 of Mvir is enclosed.
#Consistent Trees Version 1.01
#Macc,Vacc: Mass and Vmax at accretion.
#Mpeak,Vpeak: Peak mass and Vmax over mass accretion history.
#Halfmass_Scale: Scale factor at which the MMP reaches 0.5*Mpeak.
#Acc_Rate_*: Halo mass (or log10 vmax) accretion rates in Msun/h/yr (or dex/yr).
# Inst: instantaneous; 100Myr: averaged over past 100Myr,
# X*Tdyn: averaged over past X*virial dynamical time.
# Mpeak: Growth Rate of Mpeak, averaged from current z to z+0.5
# Log_Vmax: Growth Rate of Log10(Vmax)
#Mpeak_Scale: Scale at which Mpeak was reached.
#Acc_Scale: Scale at which satellites were (last) accreted.
#First_Acc_Scale: Scale at which current and former satellites first passed through a larger halo.
#First_Acc_(Mvir|Vmax): Mvir and Vmax at First_Acc_Scale.
#Vmax@Mpeak: Halo Vmax at the scale at which Mpeak was reached.
#Tidal_Force_Tdyn: Dimensionless tidal force averaged over past dynamical time.
#Log_(Vmax/Vmax_max(Tdyn;TMpeak)): Log10 of Vmax_now over Vmax@(Tdyn ago) OR Vmax@Mpeak (if and only if Mpeak happened > 1Tdyn ago).
#Time_to_future_merger: Time (in Gyr) until the given halo merges into a larger halo. (-1 if no future merger happens)
#Future_merger_MMP_ID: most-massive progenitor of the halo into which the given halo merges. (-1 if the main progenitor of the future merger halo does not exist at the given scale factor.)
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