THE CLUSTERING of RADIO GALAXIES: BIASING and EVOLUTION VERSUS STELLAR MASS

Adi Nusser, Prabhakar Tiwari

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

We study the angular clustering of ∼6 �105 NVSS sources on scales in the context of the ΛCDM scenario. The analysis partially relies on the redshift distribution of 131 radio galaxies, inferred from the Hercules and CENSORS survey, and an empirical fit to the stellar-to-halo mass relation. For redshifts z ≲ 0.7, the fraction of radio activity versus stellar mass evolves as , where α0 = 2.529 � 0.184 and The estimate on α0 is largely driven by the results of Best et al., while the constraint on α1 is new. We derive a biasing factor between radio galaxies and the underlying mass. The function fits well the redshift dependence. We also provide convenient parametric forms for the redshift-dependent radio luminosity function, which are consistent with the redshift distribution and the NVSS source count versus flux.

Original languageEnglish
Article number85
JournalAstrophysical Journal
Volume812
Issue number1
DOIs
StatePublished - 10 Oct 2015
Externally publishedYes

Keywords

  • dark matter
  • galaxies: active
  • galaxies: high-redshift
  • large-scale structure of universe

Fingerprint

Dive into the research topics of 'THE CLUSTERING of RADIO GALAXIES: BIASING and EVOLUTION VERSUS STELLAR MASS'. Together they form a unique fingerprint.

Cite this