2mm Observations and the Search for High-Redshift Dusty Star-forming Galaxies

Abstract

Finding high-redshift (z>>4) dusty star-forming galaxies is extremely challenging. It has recently been suggested that millimeter selections may be the best approach, since the negative K-correction makes galaxies at a given far-infrared (FIR) luminosity brighter at z>4 than those at z=2-3. Here we analyze this issue using a deep ALMA 2mm sample obtained by targeting ALMA 870um priors (these priors were the result of targeting SCUBA-2 850um sources) in the GOODS-S. We construct the prior-based 2mm galaxy number counts and compare them with published blank field-based 2mm counts, finding good agreement down to 0.2mJy. Only a fraction of the current 2mm extragalactic background light is resolved, and we estimate what observational depths may be needed to resolve it fully. By complementing the 2mm ALMA data with a deep SCUBA-2 450um sample in the GOODS-S, we exploit the steep gradient with redshift of the 2mm to 450um flux density ratio to estimate redshifts for these galaxies without spectroscopic or robust optical/near-infrared photometric redshifts. Our observations measure galaxies with star formation rates in excess of 250 solar masses per year. For these galaxies, the star formation rate densities fall by a factor of 9 from z=2-3 to z=5-6.

arXiv comment14 pages, 8 figures. ApJ, in press

References in corpus (66)

• Galactic Stellar and Substellar Initial Mass Function
• The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
• EAZY: A Fast, Public Photometric Redshift Code
• A Redshift Survey of the Submillimeter Galaxy Population
• Simba: Cosmological Simulations with Black Hole Growth and Feedback
• The Spectrum of the Extragalactic Far Infrared Background from the COBE Firas Observations
• The Chandra Deep Field South: Optical Spectroscopy I
• SCUBA-2: The 10000 pixel bolometer camera on the James Clerk Maxwell Telescope
• An ALMA survey of Sub-millimeter Galaxies in the Extended Chandra Deep Field South: Physical properties derived from ultraviolet-to-radio modelling
• The MOSFIRE Deep Evolution Field (MOSDEF) Survey: Rest-Frame Optical Spectroscopy for ~1500 H-Selected Galaxies at 1.37 < z < 3.8
• A deep ALMA image of the Hubble Ultra Deep Field
• An ALMA Survey of Submillimetre Galaxies in the Extended Chandra Deep Field South: The Far-Infrared Properties of SMGs
• An ALMA survey of submillimeter galaxies in the Extended Chandra Deep Field South: Source catalog and multiplicity
• Mapping the Evolution of High Redshift Dusty Galaxies with Submillimeter Observations of a Radio-Selected Sample
• Stellar masses from the CANDELS survey: the GOODS-South and UDS fields
• An ALMA survey of the SCUBA-2 CLS UDS field: Physical properties of 707 Sub-millimetre Galaxies
• The ALPINE-ALMA [CII] Survey: data processing, catalogs, and statistical source properties
• The FourStar Galaxy Evolution Survey (ZFOURGE): ultraviolet to far-infrared catalogs, medium-bandwidth photometric redshifts with improved accuracy, stellar masses, and confirmation of quiescent galaxies to z~3.5
• The LABOCA survey of the Extended Chandra Deep Field South: A photometric redshift survey of submillimetre galaxies
• The K20 survey. VII. The spectroscopic catalogue: spectral properties and evolution of the galaxy population
• Characterisation of SCUBA-2 450um and 850um-selected Galaxies in the COSMOS Field
• The Evolution of the IR Luminosity Function and Dust-obscured Star Formation in the Last 13 Billion Years
• The MUSE Hubble Ultra Deep Field Survey: II. Spectroscopic redshifts and comparisons to color selections of high-redshift galaxies
• The NIKA2 large field-of-view millimeter continuum camera for the 30-m IRAM telescope
• ALMA Census of Faint 1.2 mm Sources Down to ~0.02 mJy: Extragalactic Background Light and Dust-Poor High-z Galaxies
• An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field: Source catalogue and properties
• Precise Identifications of Submillimeter Galaxies: Measuring the History of Massive Star-Forming Galaxies to z>5
• HELP: XID+, The Probabilistic De-blender for Herschel SPIRE maps
• GMASS ultradeep spectroscopy of galaxies at z~2 - VII. Sample selection and spectroscopy
• Alma Twenty-six Arcmin^2 Survey Of Goods-s At One-millimeter (asagao): Source Catalog And Number Counts
• Discovery of four apparently cold dusty galaxies at z=3.62-5.85 in the COSMOS field: direct evidence of CMB impact on high-redshift galaxy observables
• A Near-Infrared Analysis of the Submillimeter Background and the Cosmic Star-Formation History
• Resolving the Cosmic Far-Infrared Background at 450 and 850 Microns with SCUBA-2
• The ALMA Spectroscopic Survey in the HUDF: CO emission lines and 3 mm continuum sources
• GOODS-ALMA 2.0: Source catalog, number counts, and prevailing compact sizes in 1.1 mm galaxies
• A Submillimeter Perspective on the GOODS Fields (SUPER GOODS) - I. An Ultradeep SCUBA-2 Survey of the GOODS-N
• Is There a Maximum Star Formation Rate in High-Redshift Galaxies?
• The ALMA Frontier Fields survey I: 1.1 mm continuum detections in Abell 2744, MACSJ0416.1-2403 and MACSJ1149.5+2223
• Physical Characterization of an Unlensed Dusty Star-Forming Galaxy at $z=5.85$
• Submillimeter Number Counts at 250, 350 and 500 microns in BLAST data
• The ALMA Spectroscopic Survey in the HUDF: Deep 1.2 mm continuum number counts
• MAGPHYS+photo-z: Constraining the Physical Properties of Galaxies with Unknown Redshifts
• Mapping Obscuration to Reionization with ALMA (MORA): 2mm Efficiently Selects the Highest-Redshift Obscured Galaxies
• Sub-millimetre observations of the Hubble Deep Field and Flanking Fields
• An ALMA survey of the S2CLS UDS field: Optically invisible submillimetre galaxies
• A Submillimeter Perspective on the GOODS Fields (SUPER GOODS). III. A Large Sample of ALMA Sources in the GOODS-S
• Deceptively cold dust in the massive starburst galaxy GN20 at $z\sim 4$
• The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: The nature of the faintest dusty star-forming galaxies
• Physical properties and evolution of (Sub-)millimeter selected galaxies in the galaxy formation simulation Shark
• The SCUBA-2 Cosmology Legacy Survey: The EGS deep field I - Deep number counts and the redshift distribution of the recovered Cosmic Infrared Background at 450 and 850 um
• Ultradeep Near-Infrared Observations of GOODS 850-5
• The influence of wavelength, flux, and lensing selection effects on the redshift distribution of dusty, star-forming galaxies
• SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES): Faint-End Counts at 450 um
• The GISMO 2-millimeter Deep Field in GOODS-N
• An Accurate Position for HDF 850.1: The Brightest Submillimeter Source in the Hubble Deep Field-North
• The Hawaii SCUBA-2 Lensing Cluster Survey: Number Counts and Submillimeter Flux Ratios
• The IRAM/GISMO two-millimeter survey in the COSMOS field
• Sub-millimetre galaxies in cosmological hydrodynamic simulations: Source number counts and the spatial clustering
• The ALMA Spectroscopic Survey in the HUDF: A model to explain observed 1.1 and 0.85 millimeter dust continuum number counts
• Spectroscopic Characterisation of 250um-Selected Hyper-Luminous Star Forming Galaxies
• Determination of the Cosmic Infrared Background from COBE/FIRAS and Planck HFI Observations
• The ALMA Frontier Fields Survey - IV. Lensing-corrected 1.1 mm number counts in Abell 2744, MACSJ0416.1-2403 and MACSJ1149.5+2223
• A Submillimeter Perspective on the GOODS Fields (SUPER GOODS). V. Deep 450 Micron Imaging
• ALMACAL IX: multi-band ALMA survey for dusty star-forming galaxies and the resolved fractions of the cosmic infrared background
• Dust Properties of 870 Micron Selected Galaxies in the GOODS-S
• A Submillimeter Survey of Faint Galaxies Behind Ten Strong Lensing Clusters

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