Photometric redshifts and K-corrections for Sloan Digital Sky Survey Seven Data Release

Details Photometric redshifts and K-corrections for Sloan Digital Sky Survey Seven Data Release Photometric redshifts and K-corrections for Sloan Digital Sky Survey Seven Data Release

2010-12-16

arxiv.org/abs/1012.3752v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

14 pages, 12 figures, accepted for publication in MNRAS

Scientific paper

We present a catalogue of galaxy photometric redshifts and k-corrections for the Sloan Digital Sky Survey Seven Data Release (SDSS-DR7), available on the World Wide Web. The photometric redshifts were estimated with an artificial neural network using five ugriz bands, concentration indices and Petrosian radii in the g and r bands. We have explored our redshift estimates with different training set concluding that the best choice to improve redshift accuracy comprises the Main Galaxies Sample (MGS), the Luminous Red Galaxies, and galaxies of active galactic nuclei covering the redshift range 0

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