Interrelation of the environment of Ly$\alpha$ emitters and massive galaxies at $2<z<4.5$

Abstract

We present a comparison of the spatial distributions of Ly$\alpha$ emitters (LAEs) and massive star-forming and quiescent galaxies (SFGs and QGs) at $2<z<4.5$. We use the photometric redshift catalog to select SFGs and QGs and a LAE catalog from intermediate/narrow bands obtained from the Subaru Telescope and Isaac-Newton Telescope in Cosmic Evolution Survey (COSMOS). We derive the auto-/cross- correlation signals of SFGs, QGs, and LAEs, and the galaxy overdensity distributions at the position of them. Whereas the cross-correlation signals of SFGs and QGs are explained solely by their halo mass differences, those of SFGs and LAEs are significantly lower than those expected from their auto-correlation signals, suggesting that some additional physical processes are segregating these two populations. Such segregation of SFGs and LAEs becomes stronger for rest-frame ultraviolet faint LAEs ($M_{\mathrm{UV}}>-20$). From the overdensity distributions, LAEs are located in less dense regions than SFGs and QGs, whereas SFGs and QGs tend to be in the same overdensity distributions. The different spatial distributions of LAEs compared to those of massive galaxies may be attributed to assembly bias or large amounts of neutral hydrogen gas associated with massive halos. These results reinforce the importance of exploring multiple galaxy populations in quantifying the intrinsic galaxy environment of the high-$z$ universe.

21 pages, 14 figures, 3 tables, Accepted for publication in ApJ

References in corpus (31)

• Array Programming with NumPy
• Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
• COSMOS Photometric Redshifts with 30-bands for 2-deg2
• UltraVISTA: a new ultra-deep near-infrared survey in COSMOS
• Assembly bias in the clustering of dark matter haloes
• The Cosmic Evolution Survey (COSMOS): Subaru Observations of the HST COSMOS Field
• HiZELS: a high redshift survey of H-alpha emitters. I: the cosmic star-formation rate and clustering at z=2.23
• Effect of local environment and stellar mass on galaxy quenching and morphology at $0.5<z<2.0$
• Photometric Redshift with Bayesian Priors on Physical Properties of Galaxies
• Deconstructing the Galaxy Stellar Mass Function with UKIDSS and CANDELS: the Impact of Colour, Structure and Environment
• The CALYMHA survey: Lya luminosity function and global escape fraction of Lya photons at z=2.23
• MAHALO Deep Cluster Survey I. Accelerated and enhanced galaxy formation in the densest regions of a protocluster at z=2.5
• A z=2.5 protocluster associated with the radio galaxy MRC 2104-242: star formation and differing mass functions in dense environments
• Probing the galaxy-halo connection in UltraVISTA to $z\sim 2$
• The VLT LBG Redshift Survey - III. The clustering and dynamics of Lyman-break galaxies at z ~ 3
• Large Scale Structures in the CANDELS Fields: The Role of the Environment in Star Formation Activity
• Environmental impacts on molecular gas in protocluster galaxies at z~2
• Glimpsing the Imprint of Local Environment on the Galaxy Stellar Mass Function
• Spectral Energy Distribution Fitting of HETDEX Pilot Survey Lyman-alpha Emitters in COSMOS and GOODS-N
• The evolution of rest-frame UV properties, Lya EWs and the SFR-Stellar mass relation at z~2-6 for SC4K LAEs
• Clustering, host halos and environment of z$\sim$2 galaxies as a function of their physical properties
• Discovery of a Proto-cluster Associated with a Ly-$\alpha$ Blob Pair at z=2.3
• Direct evidence for Ly$\alpha$ depletion in the protocluster core
• The Stellar Mass, Star Formation Rate and Dark Matter Halo Properties of LAEs at $z\sim 2$
• How Do Galaxies trace a large scale structure?: A case study around a massive protocluster at $z=3.13$
• Balmer Break Galaxy Candidates at $z\sim 6$: a Potential View on the Star-Formation Activity at $z\gtrsim 14$
• The UV Luminosity Function of Protocluster Galaxies at $z\sim 4$: the Bright-end Excess and the Enhanced Star Formation Rate Density
• A detailed study of massive galaxies in a protocluster at z=3.13
• First Infrared-based implications for the dust attenuation and star formation of typical Ly$\alpha$ emitters
• The Stellar-to-Halo Mass Ratios of Passive and Star-Forming Galaxies at z~2-3 from the SMUVS survey
• Are Lyα emitters segregated in protoclusters regions?

Cited by in corpus (6)

• COSMOS2020: Discovery of a protocluster of massive quiescent galaxies at $z=2.77$
• COSMOS2020: Ubiquitous AGN Activity of Massive Quiescent Galaxies at $0<z<5$ Revealed by X-ray and Radio Stacking
• The physical origin for spatially large scatter of IGM opacity at the end of reionization: the IGM Ly$\alpha$ opacity-galaxy density relation
• Detection of anisotropic satellite quenching in galaxy clusters up to $z\sim 1$
• LATIS: Comparing Galaxy and IGM Tomography Maps as Tracers of Large-scale Structure and Protoclusters at $z\sim 2.5$
• Detection of Lyman Continuum from 3.0 < z < 3.5 Galaxies in the HETDEX Survey