The clustering and evolution of H-alpha emitters at z~1 from HiZELS

Abstract

(Abridged) The clustering properties of a well-defined sample of 734 H-alpha emitters at z=0.84 obtained as part of the Hi-z Emission Line Survey (HiZELS) are investigated. The spatial correlation function is very well-described by (r/r_0)^-1.8, with r_0=2.7+-0.3Mpc/h. The correlation length r_0 increases strongly with H-alpha luminosity, L_H-alpha, from r_0~2Mpc/h for the most quiescent galaxies (star-formation rates of ~4M_sun/yr), up to r_0>5Mpc/h for the brightest galaxies in H-alpha. The correlation length also increases with increasing rest-frame K-band luminosity (M_K), but the r_0-L_H-alpha correlation maintains its full statistical significance at fixed M_K. At z=0.84, star-forming galaxies classified as irregulars or mergers are much more clustered than discs and non-mergers, but once the samples are matched in L_H-alpha and M_K, the differences vanish, implying that the clustering is independent of morphological type at z~1. The typical H-alpha emitters found at z=0.84 reside in dark-matter haloes of ~10^12M_sun, but those with the highest SFRs reside in more massive haloes of ~10^13M_sun. Comparing the results with those of H-alpha surveys at different redshifts, it is seen that although the break of the H-alpha luminosity function, L*, evolves by a factor of ~30 from z=0.24 to z=2.23, galaxies with the same L_H-alpha/L*(z) are found in dark matter haloes of similar masses, independently of cosmic time. This not only confirms that star-formation is more efficient at higher redshift, but also suggests a fundamental connection between the strong decrease of L* since z=2.23 and the quenching of star-formation in galaxies residing within dark-matter haloes significantly more massive than 10^12M_sun at any given epoch.

Accepted for publication in MNRAS, 13 pages, 10 figures, revised version following the reviewer's report

References in corpus (21)

• The UKIRT Infrared Deep Sky Survey (UKIDSS)
• The Cosmic Evolution Survey (COSMOS) -- Overview
• COSMOS Photometric Redshifts with 30-bands for 2-deg2
• Evidence for TP-AGB stars in high redshift galaxies, and their effect on deriving stellar population parameters
• The LABOCA Survey of the Extended Chandra Deep Field South
• The 2dF-SDSS LRG and QSO Survey: QSO clustering and the L-z degeneracy
• The Luminosity Function and Star Formation Rate between Redshifts of 0.07 and 1.47 for Narrow-band Emitters in the Subaru Deep Field
• HiZELS: a high redshift survey of H-alpha emitters. I: the cosmic star-formation rate and clustering at z=2.23
• The luminosity function, halo masses and stellar masses of luminous Lyman-break galaxies at redshifts 5<z<6
• Definitive Identification of the Transition between Small- to Large-Scale Clustering for Lyman Break Galaxies
• The 2dF-SDSS LRG and QSO survey: evolution of the clustering of luminous red galaxies since z = 0.6
• Galaxy Colour, Morphology, and Environment in the Sloan Digital Sky Survey
• Obscured star formation at z = 0.84 with HiZELS: the relationship between star formation rate and H-alpha or ultra-violet dust extinction
• How accurate is Limber's equation?
• Clustering of Lyman alpha emitters at z ~ 4.5
• The H$\alpha$ Luminosity Function and Star Formation Rate at $z\approx 0.24$ in the Cosmos 2 Square-Degree Field
• The H-alpha luminosity function at redshift 2.2: A new determination using VLT/HAWK-I
• The clustering and abundance of star-forming and passive galaxies at $z\sim 2$
• Cosmic Evolution of Star Formation In SDSS Quasar Hosts Since z=1
• Evolution of the Halpha luminosity function
• Bright Lyman-alpha Emitters at z~9: constraints on the luminosity function from HiZELS

Cited by in corpus (35)

• Statistics of 207 Lya Emitters at a Redshift Near 7: Constraints on Reionization and Galaxy Formation Models
• A large Hα survey at z=2.23, 1.47, 0.84 & 0.40: the 11 Gyr evolution of star-forming galaxies from HiZELS
• Star formation at z=1.47 from HiZELS: An Hα+[OII] double-blind study
• Next Generation Cosmology: Constraints from the Euclid Galaxy Cluster Survey
• The dependence of star formation activity on environment and stellar mass at z~1 from the HiZELS H-alpha survey
• The stellar mass function of star-forming galaxies and the mass-dependent SFR function since z=2.23 from HiZELS
• Cosmic Web and Star Formation Activity in Galaxies at z~1
• How is Star Formation Quenched in Massive Galaxies?
• The clustering of H-alpha emitters at z=2.23 from HiZELS
• A fundamental metallicity relation for galaxies at z = 0.84 - 1.47 from HiZELS
• The DEEP2 Galaxy Redshift Survey: Clustering Dependence on Galaxy Stellar Mass and Star Formation Rate at z~1
• The nebular emission of star-forming galaxies in a hierarchical universe
• The merger rates and sizes of galaxies across the peak epoch of star formation from the HiZELS survey
• Herschel reveals the obscured star formation in HiZELS Hα emitters at z=1.47
• PRIMUS+DEEP2: The Dependence of Galaxy Clustering on Stellar Mass and Specific Star Formation Rate at 0.2 < z < 1.2
• SINFONI-HiZELS: The dynamics, merger rates & metallicity gradients of `typical' star-forming galaxies at $z$ = 0.8-2.2
• The H-alpha luminosity-dependent clustering of star-forming galaxies from z~0.8 to z~2.2 with HiZELS
• The most luminous H$\alpha$ emitters at z~0.8-2.23 from HiZELS: evolution of AGN and star-forming galaxies
• A large narrow band H$\alpha$ survey at $z\sim 0.2$: the bright end of the luminosity function, cosmic variance and clustering across cosmic time
• The clustering of typical Ly$\alpha$ emitters from $z\sim 2.5-6$: host halo masses depend on Ly$\alpha$ and UV luminosities
• Resolving a dusty, star-forming SHiZELS galaxy at z=2.2 with HST, ALMA and SINFONI on kiloparsec scales
• The dynamics of z=0.8 H-alpha-selected star-forming galaxies from KMOS/CF-HiZELS
• Linear bias forecasts for emission line cosmological surveys
• Linear bias and halo occupation distribution of emission line galaxies from Nancy Grace Roman Space Telescope
• The clustering of H$\beta$+[OIII] and [OII] emitters since $z\sim 5$: dependencies with line luminosity and stellar mass
• SHARDS: A global view of the star formation activity at z~0.84 and z~1.23
• The FMOS-COSMOS survey of star-forming galaxies at $z\sim 1.6$. V: Properties of dark matter halos containing H$\alpha$ emitting galaxies
• Correlations between H$\alpha$ Equivalent Width and Galaxy Properties at $z=0.47$: Physical or Selection-driven?
• JWST/NIRCam Narrowband Survey of Pa$\beta$ Emitters in the Spiderweb Protocluster at z=2.16
• The JWST Emission Line Survey (JELS): Extending rest-optical narrow-band emission line selection into the Epoch of Reionization
• Clustering of emission line galaxies with IllustrisTNG I.: fundamental properties and halo occupation distribution
• The JWST Emission Line Survey (JELS): The sizes and merger fraction of star-forming galaxies during the Epoch of Reionization
• The effect of environment on the properties of the most massive galaxies at $0.5<z<2.5$ in the cosmos-dash field
• From fields to a super-cluster: the role of the environment at z=0.84 with HiZELS
• A Non-parametric Method for the Inference of Halo Occupation Distributions