First Identification of 10-kpc Scale [CII] 158um Halos around Star-Forming Galaxies at z=5-7

Abstract

We report the discovery of 10-kpc scale [CII] 158um halos surrounding star-forming galaxies in the early Universe. We choose deep ALMA data of 18 galaxies each with a star-formation rate of ~ 10-70 Msun with no signature of AGN whose [CII] lines are individually detected at z=5.153-7.142, and conduct stacking of the [CII] lines and dust-continuum in the uv-visibility plane. The radial profiles of the surface brightnesses show a 10-kpc scale [CII] halo at the 9.2sigma level significantly extended more than the HST stellar continuum data by a factor of ~5 on the exponential-profile basis, as well as the dust continuum. We also compare the radial profiles of [CII] and Lya halos universally found in star-forming galaxies at this epoch, and find that the scale lengths agree within the 1sigma level. While two independent hydrodynamical zoom-in simulations match the dust and stellar continuum properties, the simulations cannot reproduce the extended [CII] line emission. The existence of the extended [CII] halo is the evidence of outflow remnants in the early galaxies and suggest that the outflows may be dominated by cold-mode outflows expelling the neutral gas.

19 pages, 13 figures. ApJ in press

References in corpus (84)

• Gaia Data Release 2. Summary of the contents and survey properties
• The cosmological simulation code GADGET-2
• Detailed Decomposition of Galaxy Images. II. Beyond Axisymmetric Models
• Cold streams in early massive hot haloes as the main mode of galaxy formation
• Galaxies on FIRE (Feedback In Realistic Environments): Stellar Feedback Explains Cosmologically Inefficient Star Formation
• A fundamental relation between mass, SFR and metallicity in local and high redshift galaxies
• Mass assembly in quiescent and star-forming galaxies since z=4 from UltraVISTA
• 3D-HST WFC3-selected Photometric Catalogs in the Five CANDELS/3D-HST Fields: Photometry, Photometric Redshifts and Stellar Masses
• Calibrating Extinction-Free Star Formation Rate Diagnostics with 33GHz Free-Free Emission in NGC6946
• The physics driving the cosmic star formation history
• Statistics of 207 Lya Emitters at a Redshift Near 7: Constraints on Reionization and Galaxy Formation Models
• Gusty, gaseous flows of FIRE: galactic winds in cosmological simulations with explicit stellar feedback
• 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
• The Interstellar Medium In Galaxies Seen A Billion Years After The Big Bang
• The applicability of FIR fine-structure lines as Star Formation Rate tracers over wide ranges of metallicities and galaxy types
• Evidence of strong quasar feedback in the early Universe
• On the effect of the Cosmic Microwave Background in high-redshift (sub-)millimeter observations
• A dusty, normal galaxy in the epoch of reionization
• A deep ALMA image of the Hubble Ultra Deep Field
• Diffuse Lyman Alpha Emitting Halos: A Generic Property of High Redshift Star Forming Galaxies
• Early Metal Enrichment of the Intergalactic Medium by Pregalactic Outflows
• Kiloparsec-scale dust disks in high-redshift luminous submillimeter galaxies
• An ALMA [CII] survey of 27 quasars at z>5.94
• Tracing the molecular gas in distant submillimetre galaxies via CO(1-0) imaging with the EVLA
• Large Area Survey for z=7 Galaxies in SDF and GOODS-N: Implications for Galaxy Formation and Cosmic Reionization
• Radiation pressure from massive star clusters as a launching mechanism for super-galactic winds
• The SCUBA-2 Cosmology Legacy Survey: ALMA resolves the rest-frame far-infrared emission of sub-millimeter galaxies
• "Big Three Dragons": a z = 7.15 Lyman BreakGalaxy Detected in [OIII] 88 $\mu$m, [CII] 158 $\mu$m, and Dust Continuum with ALMA
• The assembly of "normal" galaxies at z=7 probed by ALMA
• Rotation in [CII]-emitting gas in two galaxies at a redshift of 6.8
• Very extended cold gas, star formation and outflows in the halo of a bright QSO at z>6
• Compact starbursts in z~3-6 submillimeter galaxies revealed by ALMA
• The [CII] 158 micron line emission in high-redshift galaxies
• The First Billion Years project - III: The impact of stellar radiation on the coevolution of Populations II and III
• On the [CII]-SFR relation in high redshift galaxies
• UVMULTIFIT: A versatile tool for fitting astronomical radio interferometric data
• High-precision Photometric Redshifts from Spitzer/IRAC: Extreme [3.6]-[4.5] Colors Identify Galaxies in the Redshift Range z~6.6-6.9
• Identification of the brightest Lyα emitters at z=6.6: implications for the evolution of the luminosity function in the re-ionisation era
• Size--luminosity relations and UV luminosity functions at $z=6-9$ simultaneously derived from the complete Hubble Frontier Fields data
• Tracing the reionization epoch with ALMA: [CII] emission in z~7 galaxies
• Diffuse Lyman-alpha Halos around Galaxies at z=2.2-6.6: Implications for Galaxy Formation and Cosmic Reionization
• Star formation and the interstellar medium in z>6 UV-luminous Lyman-break galaxies
• Kiloparsec-scale gaseous clumps and star formation at $z=5-7$
• Planck early results. XXI. Properties of the interstellar medium in the Galactic plane
• Evolution of the Sizes of Galaxies over 7<z<12 Revealed by the 2012 Hubble Ultra Deep Field Campaign
• Diffuse Lyman Alpha Haloes around Lyman Alpha Emitters at z=3: Do Dark Matter Distributions Determine the Lyman Alpha Spatial Extents?
• VLA and ALMA Imaging of Intense, Galaxy-Wide Star Formation in z ~ 2 Galaxies
• ALMA Census of Faint 1.2 mm Sources Down to ~0.02 mJy: Extragalactic Background Light and Dust-Poor High-z Galaxies
• GOLDRUSH. II. Clustering of Galaxies at $z\sim 4-6$ Revealed with the Half-Million Dropouts Over the 100 deg${}^2$ Area Corresponding to 1 Gpc${}^3$
• Zooming on the internal structure of $z\simeq 6$ galaxies
• The Evolution of the UV Luminosity Function from z ~ 0.75 to z ~ 2.5 using HST ERS WFC3/UVIS Observations
• The impact of chemistry on the structure of high-z galaxies
• Dusty galaxies in the Epoch of Reionization: simulations
• Redshift 6.4 host galaxies of 10^8 solar mass black holes: low star formation rate and dynamical mass
• The SCUBA HAlf Degree Extragalactic Survey (SHADES) -- VI. 350 micron mapping of submillimetre galaxies
• [CII] emission in z ~ 6 strongly lensed, star-forming galaxies
• Shock-Enhanced C+ Emission and the Detection of H2O from Stephan's Quintet's Group-Wide Shock using Herschel
• Widespread QSO-driven outflows in the early Universe
• Demonstrating A New Census of INfrared Galaxies with ALMA (DANCING-ALMA). I. FIR Size and Luminosity Relation at z = 0-6 Revealed with 1034 ALMA Sources
• Are high redshift Galaxies hot? - Temperature of z > 5 Galaxies and Implications on their Dust Properties
• Kinematics of $z\ge 6$ galaxies from [CII] line emission
• ALMA reveals metals yet no dust within multiple components in CR7
• ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: Search for [CII] line and dust emission in 6<z<8 galaxies
• Large turbulent reservoirs of cold molecular gas around high-redshift starburst galaxies
• 400 pc Imaging of a Massive Quasar Host Galaxy at a Redshift of 6.6
• ALMA suggests outflows in z~5.5 galaxies
• Statistical Properties of Diffuse Lyman-alpha Halos around Star-forming Galaxies at z~2
• Extended [CII] Emission in Local Luminous Infrared Galaxies
• The First Billion Years project: constraining the dust attenuation law of star-forming galaxies at z $\simeq$ 5
• Modeling the Dust Properties of z ~ 6 Quasars with ART^2 -- All-wavelength Radiative Transfer with Adaptive Refinement Tree
• Strong FUV fields drive the [CII]/FIR deficit in z~3 dusty, star-forming galaxies
• ART^2 : Coupling Lyman-alpha Line and Multi-wavelength Continuum Radiative Transfer
• An exponential decline at the bright end of the z=6 galaxy luminosity function
• ALMA 26 Arcmin${}^2$ Survey of GOODS-S at One-millimeter (ASAGAO): Average Morphology of High-$z$ Dusty Star-Forming Galaxies is an Exponential-Disk ($n\simeq 1$)
• Dust Properties of [CII] Detected z $\sim$ 5.5 Galaxies: New HST/WFC3 Near-IR Observations
• On the contribution of fluorescence to Ly$\alpha$ halos (LAHs) around star forming galaxies
• The Diversity of Diffuse Ly$\alpha$ Nebulae around Star-Forming Galaxies at High Redshift
• Stacking of large interferometric data sets in the image- and uv-domain -- a comparative study
• Growth of First Galaxies: Impacts of Star Formation and Stellar Feedback
• Mapping metals at high redshift with far-infrared lines
• Herschel reveals a molecular outflow in a z = 2.3 ULIRG
• Radiative properties of the first galaxies: rapid transition between blue and red
• Galaxy Formation Through Filamentary Accretion at z=6.1
• ALMA Deep Field in SSA22: Blindly Detected CO Emitters and [CII] Emitter Candidates

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• Dust temperature in ALMA $\hbox{[C $\scriptstyle\rm II $]}$-detected high-$z$ galaxies
• Knocking on giants' doors: I. The evolution of the dust-to-stellar mass ratio in distant dusty galaxies
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• ALMA Lensing Cluster Survey: Bright [CII] 158 $\mu$m Lines from a Multiply Imaged Sub-$L^{\star }$ Galaxy at $z=6.0719$
• The Nature of High ${[\mathrm{OIII}]}_{88\mu \mathrm{m}}$/${[\mathrm{CII}]}_{158\mu \mathrm{m}}$ Galaxies in the Epoch of Reionization: Low Carbon Abundance and a Top-Heavy IMF?
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• Physical constraints on the extended interstellar medium of the z=6.42 quasar J1148+5251: [CII] 158um, [NII] 205um and [OI] 146um observations
• Dynamically cold disks in the early Universe: myth or reality?
• Ubiquitous Molecular Outflows in z > 4 Massive, Dusty Galaxies II. Momentum-Driven Winds Powered by Star Formation in the Early Universe
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• Spatially resolved dust properties and quasar-galaxy decomposition of a HyLIRG at z = 4.4
• Osaka Feedback Model II: Modeling Supernova Feedback Based on High-Resolution Simulations
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• [CII] halos in ALPINE galaxies: smoking-gun of galactic outflows?
• Star-formation driven outflows in local dwarf galaxies as revealed from [CII] observations by Herschel
• An extended [CII] halo around a massive star-forming galaxy at z = 5.3
• The ALMA-CRISTAL survey: Gas, dust, and stars in star-forming galaxies when the Universe was ~1 Gyr old I. Survey overview and case studies
• High resolution modeling of [CII], [CI], [OIII] and CO line emission from the ISM and CGM of a star forming galaxy at z ~ 6.5
• Multi-phase black-hole feedback and a bright [CII] halo in a Lo-BAL quasar at $z\sim 6.6$
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• Resolved Lyman-α properties of a luminous Lyman-break galaxy in a large ionised bubble at z = 6.53
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• The ALMA-CRISTAL survey: Dust temperature and physical conditions of the interstellar medium in a typical galaxy at z=5.66
• MOSEL Survey: Extremely weak outflows in EoR analogues at z=3-4
• The failure of testing for cosmic opacity via the distance-duality relation
• The SUPERCOLD-CGM survey: \\ I. Probing the extended CO(4-3) Emission of the Circumglactic medium in a sample of 10 Enormous Ly$\alpha$ Nebulae at $z\sim 2$
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