Sub-millimetre galaxies in cosmological hydrodynamic simulations: Source number counts and the spatial clustering

Abstract

We use large cosmological Smoothed-Particle-Hydrodynamics simulations to study the formation and evolution of sub-millimetre galaxies (SMGs). In our previous work, we studied the statistical properties of ultra-violet selected star-forming galaxies at high redshifts. We populate the same cosmological simulations with SMGs by calculating the reprocess of stellar light by dust grains into far-infrared to millimetre wavebands in a self-consistent manner. We generate light-cone outputs to compare directly the statistical properties of the simulated SMGs with available observations. Our model reproduces the submm source number counts and the clustering amplitude. We show that bright SMGs with flux $S>1$ mJy reside in halos with mass of $\sim 10^{13}{M}_{\odot }$ and have stellar masses greater than $10^{11}\sim {\mathrm{M}}_{\odot }$. The angular cross-correlation between the SMGs and Lyman-$\alpha$ emitters is significantly weaker than that between the SMGs and Lyman-break galaxies. The cross-correlation is also weaker than the auto-correlation of the SMGs. The redshift distribution of the SMGs shows a broad peak at $z\sim 2$, where Bright SMGs contribute significantly to the global cosmic star formation rate density. Our model predicts that there are hundreds of SMGs with $S>0.1$ mJy at $z>5$ per 1 square degree field. Such SMGs can be detected by ALMA.

11 pages, 13 figures, submitted to MNRAS

References in corpus (17)

• Dust Masses, PAH Abundances, and Starlight Intensities in the SINGS Galaxy Sample
• A Massive Molecular Gas Reservoir in the z=5.3 Submillimeter Galaxy AzTEC-3
• The Evolution of the UV Luminosity Function from z ~ 0.75 to z ~ 2.5 using HST ERS WFC3/UVIS Observations
• Spectroscopic Confirmation Of An Extreme Starburst At Redshift 4.547
• A submillimetre galaxy at z=4.76 in the LABOCA survey of the Extended Chandra Deep Field South
• An AzTEC 1.1 mm Survey of the GOODS-N Field I: Maps, Catalogue, and Source Statistics
• Spatial correlation between submillimetre and Lyman-alpha galaxies in the SSA 22 protocluster
• The origin of failed subhaloes and the common mass scale of the Milky Way satellite galaxies
• The impact of radio feedback from active galactic nuclei in cosmological simulations: Formation of disk galaxies
• A combined re-analysis of existing blank-field SCUBA surveys: comparative 850-micron source lists, combined number counts, and evidence for strong clustering of the bright sub-mm galaxy population
• Reproducing the assembly of massive galaxies within the hierarchical cosmogony
• AzTEC Millimetre Survey of the COSMOS Field - II. Source Count Overdensity and Correlations with Large-Scale Structure
• High-Resolution Submillimeter Imaging of the Ly-alpha Blob1 in SSA 22
• AzTEC half square degree survey of the SHADES fields - II. Identifications, redshifts, and evidence for large-scale structure
• Submillimeter observations of the J2142-4423 Lya protocluster at z = 2.38
• Extinction curves flattened by reverse shocks in supernovae
• The Subaru/XMM-Newton Deep Survey (SXDS) -VII. Clustering Segregation with Ultraviolet and Optical Luminosities of Lyman-Break Galaxies at z~3

Cited by in corpus (36)

• Dusty Star-Forming Galaxies at High Redshift
• Bright [CII] and dust emission in three z>6.6 quasar host galaxies observed by ALMA
• The Formation of Submillimetre-Bright Galaxies from Gas Infall over a Billion Years
• A hybrid model for the evolution of galaxies and Active Galactic Nuclei in the infrared
• ALMA Census of Faint 1.2 mm Sources Down to ~0.02 mJy: Extragalactic Background Light and Dust-Poor High-z Galaxies
• The SCUBA-2 Cosmology Legacy Survey: the nature of bright submm galaxies from 2 deg2 of 850-um imaging
• ALMA constraints on the faint millimetre source number counts and their contribution to the cosmic infrared background
• Detection of a Millimeter Flare From Proxima Centauri
• Spatially unassociated galaxies contribute significantly to the blended submillimetre galaxy population: predictions for follow-up observations of ALMA sources
• Faint End of 1.3 mm Number Counts Revealed by ALMA
• Identification of the progenitors of rich clusters and member galaxies in rapid formation at z>2
• Faint Submillimeter Galaxies Revealed by Multifield Deep ALMA Observations: Number Counts, Spatial Clustering, and A Dark Submillimeter Line Emitter
• Reproducing sub-millimetre galaxy number counts with cosmological hydrodynamic simulations
• SXDF-ALMA 2 arcmin${}^2$ Deep Survey: 1.1-mm Number Counts
• The properties of (sub)millimetre-selected galaxies as revealed by CANDELS HST WFC3/IR imaging in GOODS-South
• AzTEC/ASTE 1.1 mm survey of SSA22: Counterpart identification and photometric redshift survey of submillimeter galaxies
• The distribution and physical properties of high-redshift [OIII] emitters in a cosmological hydrodynamics simulation
• Deep LMT/AzTEC millimeter observations of Epsilon Eridani and its surroundings
• Submillimetre galaxies in cosmological hydrodynamical simulations -- an opportunity for constraining feedback models
• Is there enough star formation in simulated protoclusters?
• Physical Properties of UDF12 Galaxies in Cosmological simulations
• Reproducing cosmic evolution of galaxy population from $z=4$ to $0$
• An ALMA survey of submillimetre galaxies in the COSMOS field: The extent of the radio-emitting region revealed by 3 GHz imaging with the Very Large Array
• Nebular line emission from z > 7 galaxies in cosmological simulations: rest-frame UV to Optical lines
• An ALMA 3mm continuum census of Westerlund 1
• Comparison of cosmological simulations and deep submillimetre galaxy surveys
• The [CII]/[NII] ratio in 3 < z < 6 sub-millimetre galaxies from the South Pole Telescope survey
• ALMACAL IX: multi-band ALMA survey for dusty star-forming galaxies and the resolved fractions of the cosmic infrared background
• The star formation rate and stellar mass limits for submillimetre galaxies implied by recent interferometric observations
• Cosmic Sands: The Origin of Dusty, Star-forming Galaxies in the Epoch of Reionization
• The Effect of the Remnant Mass in Estimating Stellar Mass of Galaxies
• 2mm Observations and the Search for High-Redshift Dusty Star-forming Galaxies
• Connection Between Galaxies and HI in the Circumgalactic and Intergalactic Media: Variation According to Galaxy Stellar Mass and Star-formation Activity
• Estimating the confusion noise for the Millimetron space telescope
• Extremely-bright submillimeter galaxies beyond the Lupus-I star-forming region
• Modeling submillimeter galaxies in cosmological simulations: Contribution to the cosmic star formation density and predictions for future surveys