Luminosity function and density field of the Sloan and Las Campanas Redshift Survey

Details Luminosity function and density field of the Sloan and Las Campanas Redshift Survey Luminosity function and density field of the Sloan and Las Campanas Redshift Survey

2002-12-13

arxiv.org/abs/astro-ph/0212327v1

Astronomy and Astrophysics

Astrophysics

10 pages LaTeX text, 8 PostScript Figures, 1 jpg Figure (4a, 4b), submitted to Astronomy and Astrophysics

Scientific paper

The luminosity function of galaxies of the Early Data Release of the Sloan Digital Sky Survey (SDSS) and the Las Campanas Redshift Survey (LCRS) is calculated. The luminosity function depends on redshift, density of the environment and is different for the Norther and Southern slice of SDSS. Luminosity functions is used to derive the number and luminosity density fields of galaxies of the SDSS and LCRS surveys with a grid size of 1 h^{-1} Mpc for flat cosmological models with \Omega_m=0.3 and \Omega_\Lambda =0.7. We find that the luminosity function depends on the density of the environment: in high-density regions brightest galaxies are more luminous than in low-density regions by a factor up to 5.

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