Dissemin is shutting down on January 1st, 2025

Published in

Oxford University Press, Monthly Notices of the Royal Astronomical Society, 1(417), p. 517-531, 2011

DOI: 10.1111/j.1365-2966.2011.19294.x

Links

Tools

Export citation

Search in Google Scholar

Massive, red galaxies in a hierarchical universe - II. Clustering of Extremely Red Objects.

Journal article published in 2011 by V. Gonzalez-Perez, C. M. Baugh, C. G. Lacey ORCID, J.-W. Kim
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

Full text: Download

Green circle
Preprint: archiving allowed
Green circle
Postprint: archiving allowed
Green circle
Published version: archiving allowed
Data provided by SHERPA/RoMEO

Abstract

We present predictions for the clustering of Extremely Red Objects (EROs) in a Λ cold dark matter universe, using a semi-analytical galaxy formation model in combination with a cosmological N-body simulation. EROs are red, massive galaxies observed at 0.7 ≲z≲ 3, and their numbers and properties have posed a challenge to hierarchical galaxy formation models. We analyse the halo occupation distribution and two-point correlation function of EROs, exploring how these quantities change with apparent magnitude, colour cut and redshift. Our model predicts a halo occupation distribution that is significantly different from that typically assumed. This is due to the inclusion of active galactic nuclei (AGN) feedback, which changes the slope and scatter of the luminosity–host halo mass relation above the mass where AGN feedback first becomes important. We predict that, on average, dark matter haloes with masses above 1013 h−1 M⊙ host at least one ERO at 1.5 ≤z≤ 2.5. Taking into account sample variance in observational estimates, the predicted angular clustering for EROs with either (R−K) > 5 or (i−K) > 4.5 is in reasonable agreement with current observations.