Modelling the dusty universe II: The clustering of submillimetre-selected galaxies

Abstract

We combine the GALFORM semi-analytical model of galaxy formation, which predicts the star formation and merger histories of galaxies, the GRASIL spectro-photometric code, which calculates the spectral energy distributions (SEDs) of galaxies self-consistently including reprocessing of radiation by dust, and artificial neural networks (ANN), to investigate the clustering properties of galaxies selected by their emission at submillimetre wavelengths (SMGs). We use the Millennium Simulation to predict the spatial and angular distribution of SMGs. At redshift z = 2, we find that these galaxies are strongly clustered, with a comoving correlation length of r0 = 5.6 \pm 0.9 Mpc/h for galaxies with 850μm flux densities brighter than 5 mJy, in agreement with observations. We predict that at higher redshifts these galaxies trace denser and increasingly rarer regions of the universe. We present the predicted dependence of the clustering on luminosity, submillimetre colour, halo and total stellar masses. Interestingly, we predict tight relations between correlation length and halo and stellar masses, independent of sub-mm luminosity.

16 pages, 14 figures. Submitted to MNRAS

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Cited by in corpus (13)

• The LABOCA Survey of the Extended Chandra Deep Field South: Clustering of submillimetre galaxies
• The stellar masses and specific star-formation rates of submillimetre galaxies
• Deep 1.1 mm-wavelength imaging of the GOODS-South field by AzTEC/ASTE -- II. Redshift distribution and nature of the submillimetre galaxy population
• The SCUBA-2 Cosmology Legacy Survey: blank-field number counts of 450um-selected galaxies and their contribution to the cosmic infrared background
• Clustering of sub-millimeter galaxies in a self-regulated baryon collapse model
• (Sub)millimetre interferometric imaging of a sample of COSMOS/AzTEC submillimetre galaxies III. Environments
• Planck far-infrared detection of Hyper Suprime-Cam protoclusters at $\mathbf{z}\sim 4$: hidden AGN and star formation activity
• The Clustering Evolution of Dusty Star-Forming Galaxies
• Cosmic dichotomy in the hosts of rapidly star-forming systems at low and high redshifts
• Herschel-ATLAS : The spatial clustering of low and high redshift submillimetre galaxies
• Massive, red galaxies in a hierarchical universe-II Clustering of Extremely Red Objects
• The contribution of star-forming galaxies to fluctuations in the cosmic background light
• Environments of a sample of AzTEC submillimetre galaxies in the COSMOS field