IAU00737
Presentation type requested: EITHER
NUMERICAL GALAXY CATALOG: A HIGH RESOLUTION GALAXY CATALOG
Hideki Yahagi
National Astronomical Observatory

We have produced yet another mock galaxy catalog applying a semi-analytic galaxy formation model to the merger trees generated from $N$-body simulations with adaptive mesh refinement technique. Effective mass resolution of our catalog, named the numerical galaxy catalog (hereafter $\nu$GC), is approximately to several $10^{10}$M$_\odot$ for a $\Lambda$CDM simulation with $512^3$ particles in 70$h^{-1}$Mpc sized box. This value of effective mass resolution is one of the finest one in all numerical mock galaxy catalogs containing enough number of galaxies to discuss their statistical properties. Achieving this mass resolution has significant meaning because this value is well below the mass of $L^*$ galaxies. Compiling the three dimensional $\nu$GC data in time sequence, mock red-shift survey data is obtained. Field-of-view of the mock survey data is 2400 squared arcmins. It was shown that our data agrees well with the observational one by comparing these two types of data through the fundamental statistical properties of galaxies, such as luminosity functions at the local universe, number counts of galaxies, three dimensional two-body correlation function, and angular correlation functions.

Nagashima Masahiro , Enoki Motohiro , Gouda Naoteru , Yoshii Yuzuru