The Clustering of Massive Galaxies at z \~ 1

Overzier, R.A.; Röttgering, H.J.A.; Wilman, R.J.; Rengelink, R.B.

Abstract

We use the angular two‐point correlation function to estimate the spatial correlation length of radio sources taken from the large‐area 1.4 GHz NVSS radio survey. At the median survey redshift of z ∼ 1, r0 is found to be increasing with flux density. This is consistent with a scenario in which powerful (i.e. FRII) radio galaxies probe significantly more massive spatial structures than less powerful radio galaxies. The large spatial correlation length that we derive for FRIIs is remarkably close to that of extremely red objects (EROs). This implies that powerful radio galaxies and EROs trace equally massive structures at z ∼ 1. Moreover, because powerful radio galaxies and EROs are both associated with luminous early‐type galaxies we propose that they could be the same objects seen at different evolutionary stages. The correlation length of massive, luminous galaxies at z ∼ 1 is comparable to that of bright ellipticals locally, suggesting that r0 (comoving) of these massive galaxies has changed little from z ∼ 1 to z ≈ 0. This is in excellent agreement with current ΛCDM hierarchical model predictions.

Citation

Overzier, R., Röttgering, H., Wilman, R., & Rengelink, R. (2003, May). The Clustering of Massive Galaxies at z \~ 1. Presented at The Emergence of Cosmic Structure

• Presentation Conference Type: Conference Paper (published)
• Conference Name: The Emergence of Cosmic Structure
• Online Publication Date: May 27, 2003
• Publication Date: 2003-05
• Deposit Date: Apr 9, 2018
• Publisher: American Institute of Physics
• Volume: 666
• Pages: 257-259
• Series Title: American Institute of Physics Conference Series
• Series ISSN: 0094-243X
• DOI: https://doi.org/10.1063/1.1581801
• Public URL: https://durham-repository.worktribe.com/output/1146997
• Publisher URL: http://adsabs.harvard.edu/abs/2003AIPC..666..257O