Evolution of the Galaxy Luminosity Function at z < 0 . 3

  title={Evolution of the Galaxy Luminosity Function at z < 0 . 3},
  author={Jon N. Loveday},
We measure the redshift-dependent luminosity function and the comoving radial density of galaxies in the Sloan Digital Sky Survey Data Release 1 (SDSS DR1). Both measurements indicate that the apparent number density of bright galaxies increases by a factor ≈ 3 as redshift increases from z = 0 to z = 0.3. This result is robust to the assumed cosmology, to the details of the K-correction and to direction on the sky. These observations are most naturally explained by significant evolution in the… CONTINUE READING