ELUCID - Exploring the Local Universe with reConstructed Initial Density field III: Constrained Simulation in the SDSS Volume

Abstract

A method we developed recently for the reconstruction of the initial density field in the nearby Universe is applied to the Sloan Digital Sky Survey Data Release 7. A high-resolution N-body constrained simulation (CS) of the reconstructed initial condition, with $3072^3$ particles evolved in a 500 Mpc/h box, is carried out and analyzed in terms of the statistical properties of the final density field and its relation with the distribution of SDSS galaxies. We find that the statistical properties of the cosmic web and the halo populations are accurately reproduced in the CS. The galaxy density field is strongly correlated with the CS density field, with a bias that depend on both galaxy luminosity and color. Our further investigations show that the CS provides robust quantities describing the environments within which the observed galaxies and galaxy systems reside. Cosmic variance is greatly reduced in the CS so that the statistical uncertainties can be controlled effectively even for samples of small volumes.

submitted to ApJ, 19 pages, 22 figures. Please download the high-resolution version at http://staff.ustc.edu.cn/~whywang/paper/

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Cited by in corpus (22)

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• Galaxy groups in the low-redshift Universe
• Cosmic Web of Galaxies in the COSMOS Field: Public Catalog and Different Quenching for Centrals and Satellites
• ELUCID IV: Galaxy Quenching and its Relation to Halo Mass, Environment, and Assembly Bias
• SDSS-IV MaNGA: the indispensable role of bars in enhancing the central star formation of low-$z$ galaxies
• SIBELIUS-DARK: a galaxy catalogue of the Local Volume from a constrained realisation simulation
• Quadratic genetic modifications: a streamlined route to cosmological simulations with controlled merger history
• Impacts of the physical data model on the forward inference of initial conditions from biased tracers
• The morphological transformation and the quenching of galaxies
• Halo intrinsic alignment: dependence on mass, formation time and environment
• SDSS-IV MaNGA: Environmental dependence of the Mgb/<Fe>-sigma_* relation for nearby galaxies
• Connections between galaxy properties and halo formation time in the cosmic web
• Effects of galaxy intrinsic alignment on weak lensing peak statistics
• The Properties of Massive Star-forming galaxies with Outside-in Assembly Mode
• MaNGA 8313-1901: gas accretion observed in a blue compact dwarf galaxy?
• MAHGIC: A Model Adapter for the Halo-Galaxy Inter-Connection
• Spin Mode Reconstruction in Lagrangian Space
• Galaxy-halo size relation from Sloan Digital Sky Survey Data Release 7 and the ELUCID simulation
• The impact of environment on the lives of disk galaxies as revealed by SDSS-IV MaNGA
• Efficiently estimating mean, uncertainty and unconstrained large scale fraction of local Universe simulations with paired fixed fields
• The Impact of Baryons on the Large-Scale Structure of the Universe