Forward modeling of spectroscopic galaxy surveys: application to SDSS

Mock 2dF and SDSS galaxy redshift surveys

We present a comprehensive set of mock 2dF and SDSS galaxy redshift surveys constructed from a set of large, high-resolution cosmological N -body simulations. The radial selection functions and geometrical limits of the catalogues mimic those of the genuine surveys. The catalogues span a wide range of cosmologies, including both open and flat universes. In all the models the galaxy distribution...

SDSS - III : Massive Spectroscopic Surveys of the Distant Universe , the Milky Way Galaxy , and Extra - Solar Planetary Systems

Galaxy Evolution from Halo Occupation Distribution Modeling of Deep2 and Sdss Galaxy Clustering

We model the luminosity-dependent projected two-point correlation function of DEEP2 and SDSS galaxies within the Halo Occupation Distribution (HOD) framework. From this we infer the relationship between galaxy luminosity and host dark matter halo mass at z ∼ 1 and at z ∼ 0. At both epochs, there is a tight correlation between central galaxy luminosity and halo mass, with the slope and scatter d...

Galaxy redshift abundance periodicity from Fourier analysis of number counts N(z) using SDSS and 2dF GRS galaxy surveys

A Fourier analysis on galaxy number counts from redshift data of both the Sloan Digital Sky Survey and the 2dF Galaxy Redshift Survey indicates that galaxies have preferred periodic redshift spacings of ∆z = 0.0102, 0.0246, and 0.0448 in the SDSS and strong agreement with the results from the 2dF GRS. The redshift spacings are confirmed by the mass density fluctuations, the power spectrum P (z)...

ORIGIN OF 12μm EMISSION ACROSS GALAXY POPULATIONS FROM WISE AND SDSS SURVEYS

We cross-matched Wide-field Infrared Survey Explorer (WISE) sources brighter than 1 mJy at 12μm with the Sloan Digital Sky Survey (SDSS) galaxy spectroscopic catalog to produce a sample of ∼ 10 galaxies at 〈z〉=0.08, the largest of its kind. This sample is dominated (70%) by star-forming (SF) galaxies from the blue sequence, with total IR luminosities in the range ∼ 10 − 10L⊙. We identify which ...