| Cosmological baryonic and matter densities from 600000 SDSS luminous red galaxies with photometric redshifts (2007) | |||||||||||||||
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Abstract | |||||||||||||||
| We analyse MegaZ-LRG, a photometric-redshift catalogue of luminous red galaxies (LRGs) based on the imaging data of the Sloan Digital Sky Survey (SDSS) 4th Data Release. MegaZ-LRG, presented in a companion paper, contains >106 photometric redshifts derived with annz, an artificial neural network method, constrained by a spectroscopic subsample of ≈13 000 galaxies obtained by the 2dF-SDSS LRG and Quasar (2SLAQ) survey. The catalogue spans the redshift range 0.4 < z < 0.7 with an rms redshift error | |||||||||||||||
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