Lyman Alpha Imaging of a Proto-Cluster Region at <z>=3.09

Abstract

We present very deep imaging observations, through a narrow-band filter tuned to Lyman alpha at <z = 3.09>, of a volume containing a significant over-density of galaxies at this redshift previously discovered in our survey for continuum-selected Lyman break galaxies (LBGs). The new observations are used in conjunction with our spectroscopic results on LBGs to compare the effectiveness of continuum and emission line searches for star forming galaxies at high redshift, and to extend the search for members of the structure at <z>= 3.09 to much fainter continuum luminosities. We find that only 20-25 percent of all galaxies at a given UV continuum luminosity would be flagged as narrow-band excess objects subject to the typical limits W_Lya > 80 Angstroms in the observed frame. The density enhancement of strong Lyman alpha emitters in this field is consistent with that inferred from the analysis of the spectroscopic Lyman break galaxy sample in the same region (6+/-1), but extends to continuum luminosities up to 2 magnitudes fainter. There is no evidence for a significantly higher fraction of large Lyman alpha line equivalent widths at faint continuum luminosities. By combining the 24 spectroscopic members of the z=3.09 ``spike'' with the narrow-band candidates, we are able to produce a sample of 162 objects which are either known or likely members of this large structure. We have also discovered two extremely large and diffuse Lyman alpha emitting ``blobs'', which have physical extents >100/h kpc and Lyman alpha line fluxes 20-40 times larger than the typical line emitters at the same redshifts in the field. The possible nature of the ``blobs'' is discussed. (abstract abridged)

To appear in the ApJ, 31 pages, aastex

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• A Lyα blob and zabs {\approx} zem damped Lyα absorber in the dark matter halo of the binary quasar Q 0151+048
• Are we seeing accretion flows in a 250kpc-sized Ly-alpha halo at z=3?
• Ly$\alpha$ Emitters with Very Large Ly$\alpha$ Equivalent Widths, EW${}_0$(Ly$\alpha$) $\simeq 200-400$ Å, at $z\sim 2$
• The MUSIC of Galaxy Clusters III: Properties, evolution and Y-M scaling relation of protoclusters of galaxies
• A New interpretation of chain galaxies at high redshift
• A giant Ly$\alpha$ nebula in the core of an X-ray cluster at $z=1.99$: implications for early energy injection
• A Redshift z=5.4 Lyman alpha Emitting Galaxy with Linear Morphology in the GRAPES/UDF Field
• Lyman Alpha and MgII as Probes of Galaxies and their Environments
• Modelling of Lyman-alpha Emitting Galaxies and Ionized Bubbles at the Era of Reionization
• Lyman-alpha emission galaxies at a redshift of z = 5.7 in the FORS Deep Field
• Large-scale structure of Lyman break galaxies around a radio galaxy protocluster at z~4
• Deep rest-frame far-UV spectroscopy of the giant Lyman-alpha emitter 'Himiko'
• ODIN: Where Do Lyman-alpha Blobs Live? Contextualizing Blob Environments within the Large-Scale Structure
• Mapping the Cosmic Web with Ly-alpha Emission
• About AGN ionization echoes, thermal echoes, and ionization deficits in low redshift Lyman-alpha blobs
• Thermal Instabilities and Shattering in the High-Redshift WHIM: Convergence Criteria and Implications for Low-Metallicity Strong HI Absorbers
• Extended Lyman-alpha emission from interacting galaxies at high redshifts
• The Circumgalactic Medium of Extreme Emission Line Galaxies at z ~ 2: Resolved Spectroscopy and Radiative Transfer Modeling of Spatially Extended Lyman-alpha Emission in the KBSS-KCWI Survey
• A submillimeter galaxy illuminating its circumgalactic medium: Ly-alpha scattering in a cold, clumpy outflow
• Narrow-band surveys for very high redshift Lyman-alpha emitters
• Optical and near-infrared observations of the SPT2349-56 proto-cluster core at z = 4.3
• Radiative Transfer with Finite Elements II. Ly-alpha Line Transfer in Moving Media
• Planck far-infrared detection of Hyper Suprime-Cam protoclusters at $\mathbf{z}\sim 4$: hidden AGN and star formation activity
• An 80-kpc Lyman-alpha halo around a high redshift type-2 QSO
• Rest-frame UV line emission from the intergalactic medium at 2<z<5
• On-sky characterisation of the VISTA NB118 narrow-band filters at 1.19 micron
• Observable Signatures of the low-z Circum-Galactic and Inter-Galactic Medium : UV Line Emission in Simulations
• Rapid build-up of the stellar content in the protocluster core SPT2349$-$56 at $z=4.3$
• Subaru/MOIRCS Near-Infrared Imaging in the Proto-Cluster Region at z=3.1
• Spectroscopic Confirmation of two Extremely Massive Protoclusters BOSS1244 and BOSS1542 at $z=2.24$
• The Line Polarization Within a Giant Lyman-alpha Nebula
• Where is the fuzz? Undetected Lyman alpha nebulae around QSOs at z~2.3
• Constraining Dust and Molecular Gas Properties in Lyman Alpha Blobs at z~3
• A census of galaxy constituents in a Coma Progenitor observed at z>3
• A Lyman alpha halo around a quasar at redshift z=6.4
• An Extragalactic Spectroscopic Survey of the SSA22 Field
• Chandra reveals a luminous Compton-thick QSO powering a $Ly\alpha$ blob in a $z=4$ starbursting protocluster
• Lyman alpha emission from the first galaxies: Implications of UV backgrounds and the formation of molecules
• Revisiting the Gas Kinematics in SSA22 Lyman-$\alpha$ Blob 1 with Radiative Transfer Modeling in a Multiphase, Clumpy Medium
• Ionization of large-scale absorbing haloes and feedback events from high-redshift radio galaxies
• Characterization of the distribution of the Llyαemitters in the 53W002 field at z = 2.4
• Giant Ly-alpha nebulae in the high redshift (z>2) Universe
• Continuum Emission by Cooling Clouds
• Acceleration of Galactic Supershells by Lyman Alpha Radiation
• Deep submillimeter and radio observations in the SSA22 field. I. Powering sources and Lyα escape fraction of Lyα blobs
• The implications of dust for high-redshift protogalaxies and the formation of binary disks
• B2 0902+34: A Collapsing Protogiant Elliptical Galaxy at z=3.4
• Probing High-Redshift Galaxy Formation at the Highest Luminosities: New Insights from DEIMOS Spectroscopy
• Integral Field Spectroscopy of Extended Lyman-alpha Emission from the DLA Galaxy in Q2233+131
• ALMA observations of a z~3.1 Protocluster: Star Formation from Active Galactic Nuclei and Lyman-Alpha Blobs in an Overdense Environment
• ALMA reveals Strong [CII] emission in a galaxy embedded in a giant Lyman-alpha blob at z=3.1
• The Detection of Intergalactic Halpha Emission from the Slug Nebula at z~2.3
• Giant Lyman-Alpha Nebulae in the Illustris Simulation
• The Distribution of Ly-alpha-Emitting Galaxies at z=2.38: Paper 2, Spectroscopy
• The ALMA-CRISTAL survey. Discovery of a 15 kpc-long gas plume in a $z=4.54$ Lyman-$\alpha$ blob
• Three candidate clusters of galaxies at redshift ~1.8: the "missing link" between protoclusters and local clusters?
• Understanding the redshift evolution of the luminosity functions of Lyman-alpha emitters
• Structural Characteristics of Faint Galaxies Serendipitously Discovered with the HST WFPC2
• The Wide Field Imager Lyman-Alpha Search (WFILAS) for Galaxies at Redshift ~5.7: II. Survey Design and Sample Analysis
• Understanding large-scale structure in the SSA22 protocluster region using cosmological simulations
• On the Nature of AGN and Star Formation Enhancement in the $z=3.1$ SSA22 Protocluster: The HST WFC3 IR View
• A Multiwavelength Study of ELAN Environments (AMUSE${}^2$). Mass budget, satellites spin alignment and gas infall in a massive $z\sim 3$ quasar host halo
• Extended Ly$\alpha$ emission around quasars with eclipsing damped Ly$\alpha$ systems
• The candidate cluster and protocluster catalog (CCPC) of spectroscopically identified structures spanning $2.74<z<3.71$
• Pinpointing the Molecular Gas within a Lyman Alpha Blob at z ~ 2.7
• First Systematic Search for Oxygen-Line Blobs at High Redshift: Uncovering AGN Feedback and Star-Formation Quenching
• Extended and Filamentary Lyman Alpha Emission from the Formation of a Protogalactic Halo at z=2.63
• The disappearance of Lyman alpha blobs: a GALEX search at z=0.8
• Present-day scaling relations of submm galaxies: origin of spheroidal sytems
• A z~3 radio galaxy and its protocluster: evidence for a superstructure?
• The MUSE 3D view of feedback in a high-metallicity radio galaxy at z = 2.9
• The cosmic web in Lyman-alpha emission
• Radiative Transfer in Lyα Nebulae: I. Modeling a Continuous or Clumpy Spherical Halo with a Central Source
• What Makes Ly$\alpha$ Nebulae Glow? Mapping the Polarization of LABd05
• CHORUS. III. Photometric and Spectroscopic Properties of Ly$\alpha$ Blobs at $z=4.9-7.0$
• Lyman$\alpha$ Emitters beyond Redshift 5:The Dawn of Galaxy Formation
• What Powers Lyman alpha Blobs?
• A massive bubble of extremely metal poor gas around a collapsing Ly-alpha blob at z=2.54
• Mapping the Morphology and Kinematics of a Lyman-alpha-selected Nebula at z=3.15 with MUSE
• Spectroscopy of the spatially-extended Lya emission around a QSO at z=6.4
• Where Outflows Meet Inflows: Gas Kinematics in SSA22 Lyman-$\alpha$ Blob 2 Decoded by Advanced Radiative Transfer Modelling
• Lyman alpha emission from the first galaxies: Signatures of accretion and infall in the presence of line trapping
• An Intermediate-band imaging survey for high-redshift Lyman Alpha Emitters: The Mahoroba-11
• The nature of CR7 revealed with MUSE: a young starburst powering extended Lyman-$\alpha$ emission at z=6.6
• [OIII] Emission and Gas Kinematics in a Lyman-alpha Blob at z ~ 3.1
• GEMINI 3D spectroscopy of BAL+IR+Fe II QSOs: II. IRAS 04505-2958 an explosive QSO with hypershell and a new scenario for galaxy formation and galaxy end
• Strongly Time-Variable Ultra-Violet Metal Line Emission from the Circum-Galactic Medium of High-Redshift Galaxies
• Deep optical spectroscopy of extended Lyman alpha emission around three radio-quiet z=4.5 quasars
• Spectro-polarimetry confirms central powering of a Ly$\alpha$ nebula at z=3.09
• Ly-alpha Radiative Transfer: A Stokes Vector Approach to Ly-alpha Polarization
• Hamilton's Object -- a clumpy galaxy straddling the gravitational caustic of a galaxy cluster : Constraints on dark matter clumping
• Radio and millimeter properties of $z\sim 5.7$ Ly$\alpha$ emitters in the COSMOS field: limits on radio AGN, submm galaxies, and dust obscuration
• Obscured star formation in Ly-alpha blobs at z = 3.1
• MUSE-inspired view of the quasar Q2059-360, its Lyman alpha blob, and its neighborhood
• ALMA Observations of Lyman-alpha Blob 1: Multiple major-mergers and widely distributed interstellar media
• An investigation of the circumgalactic medium around z~2.2 AGN with ACA and ALMA
• Lyman-$\alpha$ Polarization Intensity Mapping
• Observing H2 Emission in Forming Galaxies
• Entrainment of Hot Gas into Cold Streams: The Origin of Excessive Star-formation Rates at Cosmic Noon
• The Origin and Evolution of Lyman-alpha Blobs in Cosmological Galaxy Formation Simulations
• A Lyman Break Galaxy in the Epoch of Reionization from HST Grism Spectroscopy
• An Emission-Line Search for Star-Forming Dwarf Galaxies Toward Abell 851
• Substructure within the SSA22 protocluster at $z\approx 3.09$
• 3D tomography of the giant Ly$\alpha$ nebulae of $z$$\approx$3--5 radio-loud AGN
• A young, dusty, compact radio source within a Ly|*alpha*| halo
• Hot Gas, Cold Gas and Sub-Halos in a Lyman-alpha Blob at Redshift 2.38
• Proto-clusters in the Lambda CDM Universe
• New Supporting Evidence for the Overdensity of Galaxies around the Radio-Loud Quasar SDSS J0836+0054 at z =5.8
• A millimeter-wave redshift search for the unlensed HyLIRG, HS1700.850.1
• Mapping the Polarization of the Radio-Loud Ly$\alpha$ Nebula B3 J2330+3927
• A Search for Lyman Break Galaxies in the CDF-S Using Swift UVOT
• Prospects for Observing the low-density Cosmic Web in Lyman-alpha Emission
• Lyman-alpha emitters as tracers of the transitioning Universe
• Polarization of Rayleigh scattered Lyα in active galactic nuclei
• Discovery of a giant and luminous Lya+CIV+HeII nebula at z=3.326 with extreme emission line ratios
• The average submillimetre properties of Lyman-alpha Blobs at z=3
• Tracing large-scale structure at high redshift with Lyman-alpha emitters: the effect of peculiar velocities
• High redshift Lya emitters: clues on the Milky Way infancy
• Local Group progenitors: Lyman Alpha bright?
• A high dust emissivity index beta for a CO-faint galaxy in a filamentary Lyman-alpha nebula at z=3.1
• An overdensity of red galaxies around the hyperluminous dust-obscured quasar W1835$+$4355 at $z=2.3$
• Design for the First Narrowband Filter for the Dark Energy Camera: Optimizing the LAGER Survey for z ~ 7 Galaxies
• Evolution of the Lyman-alpha Halos around High-Redshift Radio Galaxies
• A search for dust and molecular gas in enormous Ly$\alpha$ nebulae at $z\approx 2$
• Probing the Diffuse Lyman-alpha Emission on Cosmological Scales: Lyα Emission Intensity Mapping Using the Complete SDSS-IV eBOSS Survey
• A deep search for CO J=2-1 emission from a Lyman-Alpha blob at z~6.595
• Correlation of supernova redshifts with temperature fluctuations of the Cosmic Microwave Background
• Revealing the Nature of a Lyman-$\alpha$ Halo in a Strongly Lensed Interacting System at $z=2.92$
• MOSFIRE and LDSS3 Spectroscopy for an [OII] Blob at z=1.18: Gas Outflow and Energy Source
• Low-Metallicity Gas Clouds in a Galaxy Proto-Cluster at Redshift 2.38
• A Spectroscopic Survey of Ly$\alpha$ Emitters at $z\approx 3.1$ over $\sim$1.2 Deg${}^2$
• Comparing H-alpha and HI Surveys as Means to a Complete Local Galaxy Catalog in the Advanced LIGO/Virgo Era
• The cooler past of the intracluster medium in TNG-Cluster
• Detecting the Cosmic Web: Lyα Emission from Simulated Filaments at z=3
• The Ly$\alpha$, CIV, and HeII nebulae around J1000+0234: a galaxy pair at the center of a galaxy overdensity at $z=4.5$
• JCMT/SCUBA-2 uncovers an excess of $850\mu$m counts on megaparsec scales around high-redshift quasars. Characterization of the overdensities and their alignment with the quasars' Ly$\alpha$ nebulae
• ALMACAL. XI. Over-densities as signposts to proto-clusters? A cautionary tale
• Tomography of the environment of the COSMOS/AzTEC-3 submillimeter galaxy at z=5.3 revealed by Lyalpha and MUSE observations
• The circumgalactic medium in Lyman-alpha: a new constraint on galactic outflow models
• A new method to search for high redshift clusters using photometric redshifts
• OTELO survey: optimal emission-line flux determination with OSIRIS/GTC
• On the Gas Surrounding High Redshift Galaxy Clusters
• Testing an indirect method for identifying galaxies with high levels of Lyman continuum leakage
• Large-Scale Structure of Short-Lived LymanαEmitters
• LARgE Survey. I. Dead Monsters: the Massive End of the Passive Galaxy Stellar Mass Function at Cosmic Noon
• Molecular hydrogen in Lyman Alpha Emitters
• NuSTAR hard X-ray data and Gemini 3D spectra reveal powerful AGN and outflow histories in two low-redshift Lyman-$\alpha$ blobs
• A galaxy overdensity at z=0.401 associated with an X-ray emitting structure of Warm-Hot Intergalactic Medium
• C IV and He II Line Emission of Lyman Alpha Blobs: Powered by Shock Heated Gas
• Spectroscopic Gravitational Lens Candidates in the CNOC2 Field Galaxy Redshift Survey
• Connecting the growth of galaxies to the large-scale environment in a massive node of the Cosmic Web at z~3
• A Search for Massive Galaxy Population in a Protocluster of LAEs at $z=2.39$ near the Radio Galaxy 53W002
• Observational Diagnostics of Gas Flows: Insights from Cosmological Simulations
• Galaxy populations of ProtoClusters in cosmological hydrodynamical simulations
• When galaxies collide: understanding the broad absorption-line radio galaxy 4C +72.26
• Circumgalactic Environments around Distant Quasars 3C 9 and 4C 05.84
• The Afterglows of Ultraluminous Quasars
• A Peculiar Type~II QSO Identified via Broad-band Detection of Extreme Nebular Line Emission
• Spitzer's View of the Candidate Cluster and Protocluster Catalog (CCPC)
• Evidence for Infalling Gas in a Lyman-$\alpha$ Blob
• Observations of Ly$\alpha$ Emitters at High Redshift
• SDSS-IV MaNGA: the physical origin of off-galaxy H$\alpha$ blobs in the local Universe
• The miniJPAS Survey: Detection of double-core Lyα morphology of two high-redshift (z>3) QSOs
• Gas properties as a function of environment in the proto-supercluster Hyperion at z ~ 2.45
• Lyman Alpha Line Spectra of the First Galaxies: Dependence on Observed Direction to the Underlying CDM Filament
• The Role of Dust, UV Luminosity and Large-scale Environment on the Escape of Lya Photons: A Case Study of a Protocluster field at z = 3.1
• Circumgalactic Ly$\alpha$ Nebulae in Overdense Quasar Pair Regions Observed with the Palomar Cosmic Web Imager
• Deep Submillimetre and Radio Observations in the SSA22 Field. II. Sub-millimetre source catalogue and number counts
• Scattering of Lyα Photons through the Reionizing Intergalactic Medium: I. Spectral Energy Distribution
• Tracing the Total Stellar Mass and Star Formation of High-Redshift Protoclusters
• Proto-clusters associated with radio galaxies from z = 2 to z = 4
• CGM cloud sizes from refractive FRB scattering
• An ALMA spectroscopic survey of the Planck high-redshift object PLCK G073.4-57.5 confirms two protoclusters
• A Ly-alpha nebula at z~3.3
• Modelling the Evolution of Ly$\alpha$ Blobs and Ly$\alpha$ Emitters
• Brighter and More Massive Galaxies in the Vicinity of Lyman-alpha Nebulae
• A Damped Ly-alpha Absorption-line System in an Apparent Void at Redshift 2.38
• A Compact Group of Galaxies at z = 2.48 hosting an AGN-Driven Outflow
• LRG J0239-0134: A Ring Galaxy or a Pair of Superbubbles at z=1 ?
• Quasars Clustering at z approx 3 on Scales less sim 10 h^{-1} Mpc
• J-PAS: Discovery of RaJav, a bright spatially extended Ly$\alpha$ Nebula at z=2.25
• Discovery of a Lyα blob photo-ionised by a super-cluster of massive stars associated to a z = 3.49 galaxy
• Selecting Clusters and Protoclusters via Stellar Mass Density: I. Method and tests on Mock HSC-SSP catalogs
• ODIN: A New Lyman Alpha Blob Selection Method, Sample, and Statistical Analysis at $z\sim 3.1$
• The abundance and origin of cool gas in galaxy clusters in the TNG-Cluster simulation
• Statistical Properties of Cold Streams In Massive Star-Forming Halos in TNG50
• Oxyster: A Circumgalactic Low-ionization Oxygen Nebula next to a Starburst Galaxy at $z\sim 1$
• Resolving circumgalactic gas flows around a z$\approx$3.6 quasar using MUSE and ALMA
• Probing the evolution of galaxies using redshifted H-alpha emission
• Searching Far and Long I: Pilot ALMA 2mm Follow-up of Bright Dusty Galaxies as a Redshift Filter