Constraining evolution in the halo model using Galaxy Redshift Surveys

Renbin Yan, Darren S. Madgwick, Martin White

Research output: Contribution to journalReview articlepeer-review

52 Scopus citations

Abstract

We use the latest observations from the 2dF Galaxy Redshift Survey to fit the conditional luminosity function (CLF) formulation of the halo model for galaxies at z = 0. This fit is then used to test the extent of evolution in the halo occupation distribution to z = 0.8, by comparing the predicted clustering from this CLF to preliminary results from the DEEP2 Redshift Survey. We show that the current observations from the DEEP2 Redshift Survey are remarkably consistent with no evolution in the CLF from z = 0 to 0.8. This result is surprising, in that it suggests that there has been very little change in the way galaxies occupy their host dark matter halos over half the age of the universe. We discuss in detail the observational constraints we have adopted and also the various selection effects in each survey and how these affect the galaxy populations encountered in each survey.

Original languageEnglish
Pages (from-to)848-857
Number of pages10
JournalAstrophysical Journal
Volume598
Issue number2 I
DOIs
StatePublished - Dec 1 2003

Keywords

  • Cosmology: theory
  • Galaxies: halos
  • Galaxies: high-redshift

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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