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Clustering properties and peculiar velocities of halos in large-scalestructure carry a wealth of cosmological information over a wide range ofscales from linear to nonlinear scales. We use halo catalogs in a suite ofhigh-resolution $N$-body simulations to construct mock catalogs of galaxiesthat resemble the SDSS-like luminous early-type galaxies at three redshift binsin the range $0.15\le z\le 0.7$. To do this we include 10 nuisance parametersto model variations in halo-galaxy connections for each redshift bin; the halooccupation distribution, and the spatial and velocity distributions of galaxiesin the host halos. We evaluate the Fisher information matrix for theredshift-space power spectrum of SDSS-like galaxies using different sets of themock catalogs that are generated from changes in each of model parameters;cosmological parameters ($\sigma_8$ and $\Omega_{\rm m}$), the halo-galaxyconnection parameters, and the cosmological distances ($D_{\rm A}$ and $H$parameters at each redshift bin) for modeling an apparent geometricaldistortion of the redshift-space power spectrum (the Alcock-Paczynski effect).We show that combining the monopole and quadrupole power spectra of galaxiesallows for accurate estimations of the cosmological parameters and thecosmological distances, even after marginalization over the halo-galaxyparameters, by lifting the parameter degeneracies that are otherwise inevitableif either of the two spectra alone is used. When including the galaxy powerspectrum information up to $k=0.3\,h\,$Mpc$^{-1}$, we find about factor of 6gain in the cosmological information content of ($\sigma_8,\Omega_{\rmm},D_{\rm A}$'s and $H$'s) compared to $k=0.2\,h\,$Mpc$^{-1}$.

Cosmological information content in redshift-space power spectrum of SDSS-like galaxies in the quasi-nonlinear regime up to $k=0.3\,h\,$Mpc$^{-1}$