FoF Halo Catalog: Horizon Run 4 Simulation

Introduction

This is the FoF halo catalogs in Horizon Run 4 simulation (Kim, Park, L'Huillier & Hong 2015).

Horizon Run 4 simulation is a cosmological N-body simulation with the following properties:

• Box size: (3,150 cMpc/h)³
• Number of matter particles: 6,300³
• Cosmology: WMAP 5-year ΛCDM cosmology; (Ω_m, Ω_Λ, h, σ₈, n_s) = (0.26, 0.74, 0.72, 0.79, 0.96)

FoF halos have the following properties:

• Linking length: 0.1 cMpc/h
• Minimum number of member particles: 30
• Minimum FoF halo mass: 2.7×10¹¹ Msun/h

Data

Each data file has a name as halo.z[redshift]_[lowest Log(M)]_[highest Log(M)].hdf5. Note that the halos in each file are not sorted by their mass. Each data file is written as HDF5 file format containing the following properties:

• ID: Halo index
• x, y, z: Position in comoving coordinate (cMpc/h)
• vx, vy, vz: Peculiar velocity (km/s)
• mass: Halo mass (Msun/h)

References

Please cite the following reference if you use the above FoF halo catalog.

• Kim, J., Park, C., L'Huillier, B., & Hong, S.E. 2015, JKAS, 48, 213

If you have a question, please contact Dr. Sungwook E. Hong.