Rise of the Titans: A Dusty, Hyper-Luminous "870 micron Riser" Galaxy at z~6

Abstract

We report the detection of ADFS-27, a dusty, starbursting major merger at a redshift of z=5.655, using the Atacama Large Millimeter/submillimeter Array (ALMA). ADFS-27 was selected from Herschel/SPIRE and APEX/LABOCA data as an extremely red "870 micron riser" (i.e., S_250<S_350<S_500<S_870), demonstrating the utility of this technique to identify some of the highest-redshift dusty galaxies. A scan of the 3mm atmospheric window with ALMA yields detections of CO(5-4) and CO(6-5) emission, and a tentative detection of H2O(211-202) emission, which provides an unambiguous redshift measurement. The strength of the CO lines implies a large molecular gas reservoir with a mass of M_gas=2.5x10^11(alpha_CO/0.8)(0.39/r_51) Msun, sufficient to maintain its ~2400 Msun/yr starburst for at least ~100 Myr. The 870 micron dust continuum emission is resolved into two components, 1.8 and 2.1 kpc in diameter, separated by 9.0 kpc, with comparable dust luminosities, suggesting an ongoing major merger. The infrared luminosity of L_IR~=2.4x10^13Lsun implies that this system represents a binary hyper-luminous infrared galaxy, the most distant of its kind presently known. This also implies star formation rate surface densities of Sigma_SFR=730 and 750Msun/yr/kpc2, consistent with a binary "maximum starburst". The discovery of this rare system is consistent with a significantly higher space density than previously thought for the most luminous dusty starbursts within the first billion years of cosmic time, easing tensions regarding the space densities of z~6 quasars and massive quiescent galaxies at z>~3.

arXiv comment9 pages, 5 figures, 2 tables, to appear in ApJ (accepted September 12, 2017)

References in corpus (51)

• Galactic Stellar and Substellar Initial Mass Function
• Rotating Nuclear Rings and Extreme Starbursts in Ultraluminous Galaxies
• A Redshift Survey of the Submillimeter Galaxy Population
• Cool Gas in High Redshift Galaxies
• Submillimeter Galaxies
• Dusty Star-Forming Galaxies at High Redshift
• Radiation Pressure Supported Starburst Disks and AGN Fueling
• The Herschel Multi-tiered Extragalactic Survey: HerMES
• Submillimeter Galaxies at z~2: Evidence for Major Mergers & Constraints on Lifetimes, IMF and CO-H2 Conversion Factor
• A Dust-Obscured Massive Maximum-Starburst Galaxy at a Redshift of 6.34
• High-resolution Millimeter Imaging of Submillimeter Galaxies
• A survey of molecular gas in luminous sub-millimetre galaxies
• Two bright submillimeter galaxies in a z=4.05 proto-cluster in GOODS-North, and accurate radio-infrared photometric redshifts
• A hyperluminous galaxy at z = 2.8 found in a deep submillimetre survey
• Kiloparsec-scale dust disks in high-redshift luminous submillimeter galaxies
• Sub-millimeter galaxies as progenitors of compact quiescent galaxies
• Tracing the molecular gas in distant submillimetre galaxies via CO(1-0) imaging with the EVLA
• A massive proto-cluster of galaxies at a redshift of z {\approx} 5.3
• HerMES: The SPIRE confusion limit
• ALMA redshifts of millimeter-selected galaxies from the SPT survey: The redshift distribution of dusty star-forming galaxies
• The Intense Starburst HDF850.1 in a Galaxy Overdensity at z=5.2 in the Hubble Deep Field
• Observations of Arp 220 using Herschel-SPIRE: An Unprecedented View of the Molecular Gas in an Extreme Star Formation Environment
• The diversity of SCUBA-selected galaxies
• Gravitational Lens Models Based on Submillimeter Array Imaging of Herschel-selected Strongly Lensed Sub-millimeter Galaxies at z>1.5
• ALMA Imaging and Gravitational Lens Models of South Pole Telescope-Selected Dusty, Star-Forming Galaxies at High Redshifts
• ALMA Imaging of Gas and Dust in a Galaxy Protocluster at Redshift 5.3: [CII] Emission in "Typical" Galaxies and Dusty Starbursts ~1 Billion Years after the Big Bang
• The Formation of Submillimetre-Bright Galaxies from Gas Infall over a Billion Years
• Herschel-ATLAS: a binary HyLIRG pinpointing a cluster of starbursting proto-ellipticals
• A Massive Molecular Gas Reservoir in the z=5.3 Submillimeter Galaxy AzTEC-3
• Gas and dust in a submillimeter galaxy at z = 4.24 from the Herschel ATLAS
• Luminous Infrared Galaxies with the Submillimeter Array: I. Survey Overview and the Central Gas to Dust Ratio
• The Formation of High Redshift Submillimeter Galaxies
• The kiloparsec-scale star formation law at redshift 4: wide-spread, highly efficient star formation in the dust-obscured starburst galaxy GN20
• Extended Cold Molecular Gas Reservoirs in z~3.4 Submillimeter Galaxies
• The rapid assembly of an elliptical galaxy of 400 billion solar masses at a redshift of 2.3
• The redshift distribution of dusty star forming galaxies from the SPT survey
• A census of metals at high and low redshifts and the connection between submillimetre sources and spheroid formation
• A bright z=5.2 lensed submillimeter galaxy in the field of Abell 773: HLSJ091828.6+514223
• Spectroscopic Confirmation Of An Extreme Starburst At Redshift 4.547
• How to distinguish starbursts and quiescently star-forming galaxies: The `bimodal' submillimetre galaxy population as a case study
• The space density of luminous dusty star-forming galaxies at $z>4$: SCUBA-2 and LABOCA imaging of ultrared galaxies from $Herschel$-ATLAS
• HerMES: Candidate High-Redshift Galaxies Discovered with Herschel/SPIRE
• HerMES: ALMA Imaging of Herschel-selected Dusty Star-forming Galaxies
• Witnessing the birth of the red sequence: ALMA high-resolution imaging of [CII] and dust in two interacting ultra-red starbursts at z = 4.425
• The Nature of Sub-millimetre Galaxies in Cosmological Hydrodynamic Simulations
• Galactic bulge formation as a maximum intensity starburst
• HerMES: A search for high-redshift dusty galaxies in the HerMES Large Mode Survey - Catalogue, number counts and early results
• HerMES: The Rest-Frame UV Emission and A Lensing Model for the z=6.34 Luminous Dusty Starburst Galaxy HFLS3
• The most distant, luminous, dusty star-forming galaxies: redshifts from NOEMA and ALMA spectral scans
• Submillimeter H2O and H2O+ emission in lensed ultra- and hyper-luminous infrared galaxies at z ~ 2-4
• SPIRE Point Source Catalog Explanatory Supplement

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• A photo-z cautionary tale: Redshift confirmation of COSBO-7 at z=2.625
• The JCMT SCUBA-2 Survey of the James Webb Space Telescope North Ecliptic Pole Time-Domain Field
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• A Systematic Search for Reddest Far-infrared and Sub-millimeter Galaxies: revealing dust-embedded starbursts at high redshifts
• Behind the dust veil: A panchromatic view of an optically dark galaxy at z=4.82
• Vz-GAL: Probing Cold Molecular Gas in Dusty Star-forming Galaxies at z=1-6
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• Do Unusually Cold Starburst Galaxies Exist? A Case Study