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We develop a galaxy assignment scheme that populates dark matter halos withgalaxies by tracing the most bound member particles (MBPs) of simulated halos.Several merger-timescale models based on analytic calculations and numericalsimulations are adopted as the survival time of mock satellite galaxies. Webuild mock galaxy samples from halo merger data of the Horizon Run 4 $N$-bodysimulation from $z = 12-0$. We compare group properties and two-pointcorrelation functions (2pCFs) of mock galaxies with those of volume-limitedSDSS galaxies, with $r$-band absolute magnitudes of $\mathcal{M}_r - 5 \log h <-21$ and $-20$ at $z=0$. It is found that the MBP-galaxy correspondence schemereproduces the observed population of SDSS galaxies in massive galaxy groups($M > 10^{14} h^{-1} M_{\odot}$) and the small-scale 2pCF ($r_{\rm p} < 10h^{-1} {\rm Mpc}$) quite well for the majority of the merger timescale modelsadopted. The new scheme outperforms the previous subhalo-galaxy correspondencescheme by more than $2\sigma$.

The Most Bound Halo Particle-Galaxy Correspondence Model: Comparison between Models with Different Merger Timescales