Discovery of a Large ~200 kpc Gaseous Nebula at z=2.7 with the Spitzer Space Telescope

Abstract

We report the discovery of a very large, spatially extended Ly alpha -emitting nebula at z=2.656 associated with a luminous mid-infrared source. The bright mid-infrared source (F(24um)=0.86 mJy) was first detected in observations made using the Spitzer Space Telescope. Existing broad-band imaging data from the NOAO Deep Wide-Field Survey revealed the mid-infrared source to be associated with a diffuse, spatially extended, optical counterpart in the Bw band. Spectroscopy and further imaging of this target reveals that the optical source is an almost purely line-emitting nebula with little, if any, detectable diffuse continuum emission. The Lya nebula has a luminosity of L[Lya] ~ 1.7e44 erg/s and an extent of at least 20 arcsec (160 kpc). Its central ~8 arcsec shows an ordered, monotonic velocity profile; interpreted as rotation, this region encloses a mass M = 6e12 Msun. Several sources lie within the nebula. The central region of the nebula shows narrow (~365 km/s) emission lines of CIV and HeII. The mid-infrared source is a compact object lying within the nebula, but offset from the center by a projected distance of ~2.5 arcsec (20 kpc), and likely to be an enshrouded AGN. A young star-forming galaxy lies near the northern end of the nebula. We suggest that the nebula is a site of recent multiple galaxy and AGN formation, with the spatial distribution of galaxies within the nebula perhaps tracking the formation history of the system.

37 pages (includes 11 figures). Accepted to ApJ

References in corpus (36)

• The Infrared Array Camera (IRAC) for the Spitzer Space Telescope
• The USNO-B Catalog
• Rest-Frame Ultraviolet Spectra of z~3 Lyman Break Galaxies
• The Star Formation History of Field Galaxies
• On the properties of massive Population III stars and metal-free stellar populations
• Obscured and unobscured active galactic nuclei in the Spitzer Space Telescope First Look Survey
• Lyman Break Galaxies at Redshift z~3: Survey Description and Full Data Set
• Lyman Alpha Imaging of a Proto-Cluster Region at <z>=3.09
• The Stellar Populations and Evolution of Lyman Break Galaxies
• The transition from Population III to normal galaxies: Ly-a and HeII 1640 emission and the ionising properties of high redshift starburst galaxies
• Dust Emission from Active Galactic Nuclei
• A Subaru Search for Ly-alpha Blobs in and around the Proto-cluster Region at Redshift z=3.1
• The Far- and Mid-Infrared/Radio Correlations in the Spitzer Extragalactic First Look Survey
• Clustering of Submillimeter-Selected Galaxies
• Spectroscopic Redshifts to z > 2 for Optically Obscured Sources Discovered with the Spitzer Space Telescope
• Lyman Alpha Cooling Radiation from High-Redshift Halos
• Spin, Accretion and the Cosmological Growth of Supermassive Black Holes
• Evolved Galaxies at z > 1.5 from the Gemini Deep Deep Survey: The Formation Epoch of Massive Stellar Systems
• Triggered Star Formation in a Massive Galaxy at z=3.8: 4C41.17
• The IRAC Shallow Survey
• Superwind model of extended Lyman alpha emitters at high redshift
• Constraints from Gravitational Recoil on the Growth of Supermassive Black Holes at High Redshift
• Giant Lya nebulae associated with high redshift radio galaxies
• Extended Lyman Alpha Emission Around Young Quasars: a Constraint on Galaxy Formation
• Kinematically quiet halos around z~2.5 radio galaxies. Keck spectroscopy
• Spitzer observations of MAMBO galaxies: weeding out active nuclei in starbursting proto-ellipticals
• A Group of Galaxies at Redshift 2.38
• Formation of the Black Holes in the Highest Redshift Quasars
• Evidence for Large-Scale Structure at z=2.4 From Lyman-alpha Imaging
• The Distribution of Lya-Emitting Galaxies at z=2.3
• Deep Westerbork 1.4 GHz Imaging of the Bootes Field
• A Pair of Compact Red Galaxies at Redshift 2.38, Immersed in a 100 kpc Scale Ly-alpha Nebula
• Further multiwavelength observations of the SSA22 Ly_alpha emitting `blob'
• Mid-infrared spectral evidence for a luminous dust enshrouded source in Arp220
• Massive Ellipticals at High Redshift: NICMOS Imaging of Z~1 Radio Galaxies
• Giant low surface brightness halos in distant radio galaxies: USS0828+193

Cited by in corpus (114)

• The Subaru/XMM-Newton Deep Survey (SXDS). IV. Evolution of Lya Emitters from z=3.1 to 5.7 in the 1 deg^2 Field: Luminosity Functions and AGN
• Distant Radio Galaxies and their Environments
• A cosmic web filament revealed in Lyman-alpha emission around a luminous high-redshift quasar
• The realm of the galaxy protoclusters
• Ubiquitous giant Ly $\alpha$ nebulae around the brightest quasars at $z\sim 3.5$ revealed with MUSE
• Quasar Quartet Embedded in Giant Nebula Reveals Rare Massive Structure in Distant Universe
• A Population of Faint Extended Line Emitters and the Host Galaxies of Optically Thick QSO Absorption Systems
• Lyman-alpha Cooling Emission from Galaxy Formation
• Lyman Alpha Blobs as an Observational Signature of Cold Accretion Streams into Galaxies
• Discovery of a Giant Lya Emitter Near the Reionization Epoch
• Evolution in the properties of Lyman-alpha emitters from redshifts z ~ 3 to z ~ 2
• Discovery of an Enormous Ly$\alpha$ nebula in a massive galaxy overdensity at $z=2.3$
• A Lyman-alpha blob in the GOODS South field: evidence for cold accretion onto a dark matter halo
• SILVERRUSH. III. Deep Optical and Near-Infrared Spectroscopy for Lya and UV-Nebular Lines of Bright Lya Emitters at z=6-7
• Lyman-alpha Emission From Cosmic Structure I: Fluorescence
• The Chandra Deep Protocluster Survey: Ly-alpha Blobs are powered by heating, not cooling
• Line Transfer through Clumpy, Large-Scale Outflows: Lyman Alpha Absorption and Halos around Starforming Galaxies
• A multi-wavelength study of z = 3.15 Lyman-alpha emitters in the GOODS South Field
• Lyman Alpha Radiation From Collapsing Protogalaxies II: Observational Evidence for Gas Infall
• Extended Lyman Alpha Nebulae at z ~ 2.3: An Extremely Rare and Strongly Clustered Population?
• Inspiraling Halo Accretion Mapped in Lyman-$\alpha$ Emission around a $z\sim 3$ Quasar
• Quasars Probing Quasars IV: Joint Constraints on the Circumgalactic Medium from Absorption and Emission
• The Subaru Ly-alpha blob survey: A sample of 100 kpc Ly-alpha blobs at z=3
• A search for distant radio galaxies from SUMSS and NVSS: III. radio spectral energy distributions and the z-alpha correlation
• A New Population of High Redshift, Dusty Lyman-Alpha Emitters and Blobs Discovered by WISE
• A submm survey of Lyman-alpha haloes in the SA22 protocluster at z=3.1
• Evidence for Cold Accretion onto a Massive Galaxy at High Redshift?
• The Overdense Environment of a Large Lyman-alpha Nebula at z~2.7
• Systematic Survey of Extended Lyman-alpha Sources over z~3-5
• Deep HeII and CIV Spectroscopy of a Giant Lyman alpha Nebula: Dense Compact Gas Clumps in the Circumgalactic Medium of a z~2 Quasar
• Strong Field-to-Field Variation of Lyman alpha Nebulae Populations at z~2.3
• A Keck/DEIMOS Spectroscopy of Lyman Alpha Blobs at Redshift z=3.1
• Quasars Probing Quasars VIII. The Physical Properties of the Cool Circumgalactic Medium Surrounding z ~ 2-3 Massive Galaxies Hosting Quasars
• The Discovery of a Large Lyman-alpha+HeII Nebula at z~1.67: A Candidate Low Metallicity Region?
• Probing Galaxy Formation with He II Cooling Lines
• The Polarization of Scattered Lyman Alpha Radiation Around High-Redshift Galaxies
• Spitzer IRS Spectra of Optically Faint Infrared Sources with Weak Spectral Features
• The Stacked Lyman-Alpha Emission Profile from the Circum-Galactic Medium of z~2 Quasars
• Resolving the optical emission lines of Lya blob 'B1' at z=2.38: another hidden quasar
• Diffuse UV light associated with the Spiderweb Galaxy: evidence for in-situ star formation outside galaxies
• A z = 3 Lyman Alpha Blob Associated with a Damped Lyman Alpha System Proximate to its Background Quasar
• Resolving the Galaxies within a Giant Lya Nebula: Witnessing the Formation of a Galaxy Group?
• Spatially Resolved Gas Kinematics within a Ly$\alpha$ Nebula: Evidence for Large-scale Rotation
• The Diversity of Diffuse Ly$\alpha$ Nebulae around Star-Forming Galaxies at High Redshift
• Infrared Luminosities and Dust Properties of z ~ 2 Dust-Obscured Galaxies
• Spitzer observations of extended Lyman-alpha Clouds in the SSA22 field
• A Deep Narrowband Imaging Search for CIV and He II Emission from Ly$\alpha$ Blobs
• Lyman-alpha Blobs Like Company : The Discovery of A Candidate 100 kpc Lyman-alpha Blob Near to A Radio Galaxy with A Giant Lyman-alpha halo, B3 J2330+3927 at z=3.1
• Deep Spectroscopy of Systematically Surveyed Extended Lyman-alpha Sources at z~3-5
• Lyman-alpha blobs: polarization arising from cold accretion
• Metal enriched gaseous halos around distant radio galaxies: Clues to feedback in galaxy formation
• Discovery of a Proto-cluster Associated with a Ly-$\alpha$ Blob Pair at z=2.3
• Nature of Lyman Alpha Blobs: Powered by Extreme Starbursts
• How Do Galaxies trace a large scale structure?: A case study around a massive protocluster at $z=3.13$
• High-Resolution Submillimeter Imaging of the Ly-alpha Blob1 in SSA 22
• Discovery of a faint, star-forming, multiply lensed, Lyman-alpha blob
• The Properties of Lyman Alpha Nebulae: Gas Kinematics from Non-resonant Lines
• Kinematics of Gas in Lyman Alpha Nebulae
• zBootes : z-band Photometry in the NOAO Deep Wide-Field Survey Bootes Field
• Gas Accretion and Giant Lyman-alpha Nebulae
• Ultraviolet-Bright, High-Redshift ULIRGS
• Infrared and millimetre-wavelength evidence for cold accretion within a z = 2.83 Lyman-alpha blob
• A Successful Broad-band Survey for Giant Lya Nebulae II: Spectroscopic Confirmation
• A Successful Broad-band Survey for Giant Lya Nebulae I: Survey Design and Candidate Selection
• A Lyα blob and zabs {\approx} zem damped Lyα absorber in the dark matter halo of the binary quasar Q 0151+048
• A giant Ly$\alpha$ nebula in the core of an X-ray cluster at $z=1.99$: implications for early energy injection
• Lyman Alpha and MgII as Probes of Galaxies and their Environments
• ODIN: Where Do Lyman-alpha Blobs Live? Contextualizing Blob Environments within the Large-Scale Structure
• Deep rest-frame far-UV spectroscopy of the giant Lyman-alpha emitter 'Himiko'
• A submillimeter galaxy illuminating its circumgalactic medium: Ly-alpha scattering in a cold, clumpy outflow
• Extended Lyman-alpha emission from interacting galaxies at high redshifts
• About AGN ionization echoes, thermal echoes, and ionization deficits in low redshift Lyman-alpha blobs
• An 80-kpc Lyman-alpha halo around a high redshift type-2 QSO
• The Line Polarization Within a Giant Lyman-alpha Nebula
• A census of galaxy constituents in a Coma Progenitor observed at z>3
• Constraining Dust and Molecular Gas Properties in Lyman Alpha Blobs at z~3
• Continuum Emission by Cooling Clouds
• Revisiting the Gas Kinematics in SSA22 Lyman-$\alpha$ Blob 1 with Radiative Transfer Modeling in a Multiphase, Clumpy Medium
• Deep submillimeter and radio observations in the SSA22 field. I. Powering sources and Lyα escape fraction of Lyα blobs
• The Detection of Intergalactic Halpha Emission from the Slug Nebula at z~2.3
• Probing the AGN Unification Model at redshift z $\sim$ 3 with MUSE observations of giant Ly$\alpha$ nebulae
• Pinpointing the Molecular Gas within a Lyman Alpha Blob at z ~ 2.7
• Extended and Filamentary Lyman Alpha Emission from the Formation of a Protogalactic Halo at z=2.63
• What Powers Lyman alpha Blobs?
• What Makes Ly$\alpha$ Nebulae Glow? Mapping the Polarization of LABd05
• Radiative Transfer in Lyα Nebulae: I. Modeling a Continuous or Clumpy Spherical Halo with a Central Source
• Mapping the Morphology and Kinematics of a Lyman-alpha-selected Nebula at z=3.15 with MUSE
• Lyman-Alpha Escape from Low-Mass, Compact, High-Redshift Galaxies
• Where Outflows Meet Inflows: Gas Kinematics in SSA22 Lyman-$\alpha$ Blob 2 Decoded by Advanced Radiative Transfer Modelling
• [OIII] Emission and Gas Kinematics in a Lyman-alpha Blob at z ~ 3.1
• Lyman-$\alpha$ Polarization Intensity Mapping
• ALMA Observations of Lyman-alpha Blob 1: Multiple major-mergers and widely distributed interstellar media
• 3D tomography of the giant Ly$\alpha$ nebulae of $z$$\approx$3--5 radio-loud AGN
• Mapping the Polarization of the Radio-Loud Ly$\alpha$ Nebula B3 J2330+3927
• 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
• A high dust emissivity index beta for a CO-faint galaxy in a filamentary Lyman-alpha nebula at z=3.1
• Evolution of the Lyman-alpha Halos around High-Redshift Radio Galaxies
• A search for dust and molecular gas in enormous Ly$\alpha$ nebulae at $z\approx 2$
• A deep search for CO J=2-1 emission from a Lyman-Alpha blob at z~6.595
• MOSFIRE and LDSS3 Spectroscopy for an [OII] Blob at z=1.18: Gas Outflow and Energy Source
• The Ly$\alpha$, CIV, and HeII nebulae around J1000+0234: a galaxy pair at the center of a galaxy overdensity at $z=4.5$
• C IV and He II Line Emission of Lyman Alpha Blobs: Powered by Shock Heated Gas
• Seeking the Epoch of Maximum Luminosity for Dusty Quasars
• Lyman-$\alpha$ emission from a WISE-selected optically faint powerful radio galaxy M151304.72-252439.7 at $z$ = 3.132
• Circumgalactic Ly$\alpha$ Nebulae in Overdense Quasar Pair Regions Observed with the Palomar Cosmic Web Imager
• A Ly-alpha nebula at z~3.3
• Understanding Lyman-alpha emitters
• A meeting at z~3: Young massive galaxies and an AGN within 30kpc of the luminous QSO LBQS0302-0019
• Deep Submillimeter Observations of Two Lyman-alpha Emitting Galaxies at z~6.5
• ODIN: A New Lyman Alpha Blob Selection Method, Sample, and Statistical Analysis at $z\sim 3.1$
• A Strange EUV Emission: Scattered Continuum in the Lymann Limit Absorption Edge toward the Quasar SDSS J125903.26+621211.5?
• Soft X-rays from disk galaxy halos, Ly-alpha emission from forming galaxies, and the z~1 Tully-Fisher relation