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- W2094469520 abstract "Early photometric data from the Sloan Digital Sky Survey (SDSS) contain angular positions for 1.5 million galaxies. In companion papers, the angular correlation function $w(theta)$ and 2D power spectrum $C_l$ of these galaxies are presented. Here we invert Limber's equation to extract the 3D power spectrum from the angular results. We accomplish this using an estimate of $dn/dz$, the redshift distribution of galaxies in four different magnitude slices in the SDSS photometric catalog. The resulting 3D power spectrum estimates from $w(theta)$ and $C_l$ agree with each other and with previous estimates over a range in wavenumbers $0.03 < k/{rm h Mpc}^{-1} < 1$. The galaxies in the faintest magnitude bin ($21 < rstar < 22$, which have median redshift $z_m=0.43$) are less clustered than the galaxies in the brightest magnitude bin ($18 < rstar < 19$ with $z_m=0.17$), especially on scales where nonlinearities are important. The derived power spectrum agrees with that of Szalay et al. (2001) who go directly from the raw data to a parametric estimate of the power spectrum. The strongest constraints on the shape parameter $Gamma$ come from the faintest galaxies (in the magnitude bin $21 < rstar < 22$), from which we infer $Gamma = 0.14^{+0.11}_{-0.06}$ (95% C.L.)." @default.
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- W2094469520 date "2002-06-10" @default.
- W2094469520 modified "2023-10-17" @default.
- W2094469520 title "The Three‐dimensional Power Spectrum from Angular Clustering of Galaxies in Early Sloan Digital Sky Survey Data" @default.
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- W2094469520 doi "https://doi.org/10.1086/340225" @default.
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