SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES) II: Structural Properties and Near-Infrared Morphologies of Faint Submillimeter Galaxies

Abstract

We present structural parameters and morphological properties of faint 450-um selected submillimeter galaxies (SMGs) from the JCMT Large Program, STUDIES, in the COSMOS-CANDELS region. Their properties are compared to an 850um selected and a matched star-forming samples. We investigate stellar structures of 169 faint 450-um sources (S450=2.8-29.6mJy; S/N>4) at z<3 using HST near-infrared observations. Based on our spectral energy distribution fitting, half of such faint SMGs (LIR=10^11.65+-0.98Lsun) lie above the star-formation rate (SFR)/stellar mass plane. The size-mass relation shows that these SMGs are generally similar to less-luminous star-forming galaxies selected by NUV-r vs. r-J colors. Because of the intrinsic luminosity of the sample, their rest-frame optical emission is less extended than the 850um sources (S850>2mJy), and more extended than the star-forming galaxies in the same redshift range. For the stellar mass and SFR matched sample at z~=1 and z~=2, the size differences are marginal between faint SMGs and the matched galaxies. Moreover, faint SMGs have similar Sersic indices and projected axis ratios as star-forming galaxies with the same stellar mass and SFR. Both SMGs and the matched galaxies show high fractions (~70%) of disturbed features at z~=2, and the fractions depend on the SFRs. These suggest that their star formation activity is related to galaxy merging, and the stellar structures of SMGs are similar to those of star-forming galaxies. We show that the depths of submillimeter surveys are approaching the lower luminosity end of star-forming galaxies, allowing us to detect galaxies on the main sequence.

arXiv commentaccepted for publication in ApJ

References in corpus (117)

• Galactic Stellar and Substellar Initial Mass Function
• The Global Schmidt Law in Star Forming Galaxies
• The physical properties of star forming galaxies in the low redshift universe
• Star Formation in the Milky Way and Nearby Galaxies
• How Do Galaxies Get Their Gas?
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey
• CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey - The Hubble Space Telescope Observations, Imaging Data Products and Mosaics
• The Cosmic Evolution Survey (COSMOS) -- Overview
• Star Formation in AEGIS Field Galaxies since z=1.1 : The Dominance of Gradually Declining Star Formation, and the Main Sequence of Star-Forming Galaxies
• Detailed Decomposition of Galaxy Images. II. Beyond Axisymmetric Models
• The reversal of the star formation-density relation in the distant universe
• Multiwavelength study of massive galaxies at z~2. I. Star formation and galaxy growth
• A Highly Consistent Framework for the Evolution of the Star-Forming "Main Sequence" from z~0-6
• 3D-HST+CANDELS: The Evolution of the Galaxy Size-Mass Distribution since $z=3$
• Unveiling Dust-enshrouded Star Formation in the Early Universe: a Sub-mm Survey of the Hubble Deep Field
• A simple model to interpret the ultraviolet, optical and infrared emission from galaxies
• A Deep Sub-millimeter Survey of Lensing Clusters: A New Window on Galaxy Formation and Evolution
• A Redshift Survey of the Submillimeter Galaxy Population
• The COSMOS2015 Catalog: Exploring the 1<z<6 Universe with half a million galaxies
• Mass assembly in quiescent and star-forming galaxies since z=4 from UltraVISTA
• zCOSMOS: A Large VLT/VIMOS redshift survey covering 0 < z < 3 in the COSMOS field
• Constraining the Low-Mass Slope of the Star Formation Sequence at 0.5<z<2.5
• Submillimeter Galaxies
• The Herschel view of the dominant mode of galaxy growth from z=4 to the present day
• SCUBA: A common-user submillimetre camera operating on the James Clerk Maxwell Telescope
• Dusty Star-Forming Galaxies at High Redshift
• Confirmation of the remarkable compactness of massive quiescent galaxies at z~2.3: early-type galaxies did not form in a simple monolithic collapse
• Dusty star forming galaxies at high redshift
• SCUBA-2: The 10000 pixel bolometer camera on the James Clerk Maxwell Telescope
• Structural Parameters of Galaxies in CANDELS
• The Chandra COSMOS Legacy survey: overview and point source catalog
• An ALMA survey of Sub-millimeter Galaxies in the Extended Chandra Deep Field South: Physical properties derived from ultraviolet-to-radio modelling
• Can Minor Merging Account for the Size Growth of Quiescent Galaxies? New Results from the CANDELS Survey
• On the Estimation of Confidence Intervals for Binomial Population Proportions in Astronomy: The Simplicity and Superiority of the Bayesian Approach
• Size evolution of the most massive galaxies at 1.7<z<3 from GOODS NICMOS survey imaging
• A unified multi-wavelength model of galaxy formation
• Preparing Red-Green-Blue (RGB) Images from CCD Data
• Optical and Near-Infrared Imaging of the IRAS 1-Jy Sample of Ultraluminous Infrared Galaxies: II. The Analysis
• An ALMA Survey of Submillimetre Galaxies in the Extended Chandra Deep Field South: The Far-Infrared Properties of SMGs
• The Chandra COSMOS Legacy survey: optical/IR identifications
• The SCUBA-2 Cosmology Legacy Survey: 850um maps, catalogues and number counts
• An ALMA Survey of Submillimeter Galaxies in the Extended Chandra Deep Field South: The Redshift Distribution and Evolution of Submillimeter Galaxies
• Kiloparsec-scale dust disks in high-redshift luminous submillimeter galaxies
• Sub-millimeter galaxies as progenitors of compact quiescent galaxies
• A Herschel view of the far-infrared properties of submillimetre galaxies
• A catalog of visual-like morphologies in the 5 CANDELS fields using deep-learning
• Stellar Masses and SFRs for 1M Galaxies from SDSS and WISE
• Deep Spitzer 24mic COSMOS imaging -- I. The evolution of luminous dusty galaxies - Confronting the models
• HST and Spitzer imaging of red and blue galaxies at z~2.5: A correlation between size and star formation activity from compact quiescent galaxies to extended star forming galaxies
• HerMES: deep number counts at 250, 350, and 500 microns in the COSMOS and GOODS-N fields and the build-up of the cosmic infrared background
• What Does a Submillimeter Galaxy Selection Actually Select? The Dependence of Submillimeter Flux Density on Star Formation Rate and Dust Mass
• The Stellar Mass Content of Submillimeter-Selected Galaxies
• Compact starbursts in z~3-6 submillimeter galaxies revealed by ALMA
• NICMOS Imaging of DRGs in the HDF-S: A Relation Between Star-Formation and Size at z ~ 2.5
• The Formation of Submillimetre-Bright Galaxies from Gas Infall over a Billion Years
• The SCUBA-2 Cosmology Legacy Survey: ALMA resolves the bright-end of the sub-millimeter number counts
• Characterisation of SCUBA-2 450um and 850um-selected Galaxies in the COSMOS Field
• CANDELS+3D-HST: compact SFGs at z~2-3, the progenitors of the first quiescent galaxies
• The stellar masses and specific star-formation rates of submillimetre galaxies
• The VLA-COSMOS 3~GHz Large Project: AGN and host-galaxy properties out to z$\lesssim$6
• GOODS-Herschel and CANDELS: The Morphologies of Ultraluminous Infrared Galaxies at z~2
• The Formation of High Redshift Submillimeter Galaxies
• The Hubble Deep Field North SCUBA Super-map III - Optical and near-infrared properties of submillimetre galaxies
• Evolution of Dust Temperature of Galaxies through Cosmic Time as seen by Herschel
• Radio Constraints on the Identifications and Redshifts of Submm Galaxies
• CANDELS Multiwavelength Catalogs: Source Identification and Photometry in the CANDELS COSMOS Survey Field
• An ALMA Survey of Submillimeter Galaxies in the Extended Chandra Deep Field South: Near-infrared morphologies and stellar sizes
• CANDELS Visual Classifications: Scheme, Data Release, and First Results
• An ALMA survey of submillimetre galaxies in the Extended Chandra Deep Field South: Spectroscopic redshifts
• The VLA-COSMOS 3~GHz Large Project: Cosmic evolution of radio AGN and implications for radio-mode feedback since z~5
• Resolving the ISM at the peak of cosmic star formation with ALMA - The distribution of CO and dust continuum in z~2.5 sub-millimetre galaxies
• Evidence for a Major Merger Origin of High Redshift Sub-millimeter Galaxies
• High Resolution Optical/Near-Infrared Imaging of Cool Ultraluminous Infrared Galaxies
• Hubble Space Telescope images of submillimeter sources: large, irregular galaxies at high redshift
• Gas-rich mergers and feedback are ubiqitous amongst starbursting radio galaxies, as revealed by JVLA, IRAM PdBI and Herschel
• HST/WFPC2 Imaging of the QDOT Ultraluminous Infrared Galaxy Sample
• 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
• A Hubble Space Telescope NICMOS and ACS Morphological Study of z~2 Submillimetre Galaxies
• The SCUBA-2 Cosmology Legacy Survey: the nature of bright submm galaxies from 2 deg2 of 850-um imaging
• The SCUBA-2 Cosmology Legacy Survey: blank-field number counts of 450um-selected galaxies and their contribution to the cosmic infrared background
• A spatially resolved study of cold dust, molecular gas, HII regions, and stars in the $z=2.12$ submillimeter galaxy ALESS67.1
• The Nature of Sub-millimetre Galaxies in Cosmological Hydrodynamic Simulations
• Determining the stellar masses of submillimetre galaxies: the critical importance of star formation histories
• Resolving the Cosmic Far-Infrared Background at 450 and 850 Microns with SCUBA-2
• The Hubble Space Telescope GOODS NICMOS Survey: Overview and the Evolution of Massive Galaxies at 1.5 < z < 3
• Simulated observations of sub-millimetre galaxies: the impact of single-dish resolution and field variance
• A Submillimeter Perspective on the GOODS Fields (SUPER GOODS) - I. An Ultradeep SCUBA-2 Survey of the GOODS-N
• Integral Field Spectroscopy of 2.0<z<2.7 Sub-mm Galaxies; gas morphologies and kinematics
• Spatially unassociated galaxies contribute significantly to the blended submillimetre galaxy population: predictions for follow-up observations of ALMA sources
• Rotating starburst cores in massive galaxies at z=2.5
• An ALMA survey of submillimetre galaxies in the COSMOS field: Physical properties derived from energy balance spectral energy distribution modelling
• The properties of (sub)millimetre-selected galaxies as revealed by CANDELS HST WFC3/IR imaging in GOODS-South
• Infrared Selection of Obscured Active Galactic Nuclei in the COSMOS Field
• SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES): Faint-End Counts at 450 um
• The SCUBA-2 Cosmology Legacy Survey: galaxies in the deep 850-micron survey, and the star-forming `main sequence'
• Star Formation in Luminous Quasars at 2<z<3
• Properties of Submillimeter Galaxies in the CANDELS GOODS-S Field
• Faint Submillimter Galaxy Counts at 450 micron
• The role of galaxy interaction in the SFR-M relation: characterizing morphological properties of Herschel-selected galaxies at 0.2<z<1.5
• GOODS-Herschel: the impact of galaxy-galaxy interactions on the far-infrared properties of galaxies
• The evolutionary sequence of sub-mm galaxies: from diffuse discs to massive compact ellipticals?
• The SCUBA-2 Cosmology Legacy Survey: The EGS deep field - II. Morphological transformation and multi-wavelength properties of faint submillimetre galaxies
• Clumpy and Extended Starbursts in the Brightest Unlensed Submillimeter Galaxies
• An imperfectly passive nature: Bright sub-millimeter emission from dust-obscured star formation in the z=3.717 "passive" system, ZF20115
• The Hawaii SCUBA-2 Lensing Cluster Survey: Number Counts and Submillimeter Flux Ratios
• Properties of Submillimeter Galaxies in a Semi-analytic Model using the "Count Matching" Approach: Application to the ECDF-S
• The SCUBA-2 Cosmology Legacy Survey: demographics of the 450 μm-population
• A machine-learning method for identifying multi-wavelength counterparts of submillimeter galaxies: training and testing using AS2UDS and ALESS
• HST Morphologies of z ~ 2 Dust-Obscured Galaxies II: Bump Sources
• The role of the most luminous, obscured AGN in galaxy assembly at z~2
• ALMACAL II: Extreme star-formation-rate densities in a pair of dusty starbursts at $z=3.442$ revealed by ALMA 20-milliarcsec resolution imaging
• Obscured Active Galactic Nuclei triggered in compact star-forming galaxies
• High Redshift Dust Obscured Galaxies, A Morphology-SED Connection Revealed by Keck Adaptive Optics
• HST/NICMOS Imaging of Bright High-Redshift 24μm-selected Galaxies: Merging Properties
• The far infra-red SEDs of main sequence and starburst galaxies
• High resolution near-infrared imaging of submillimeter galaxies
• Spatially Resolved Spectroscopy of Sub-mm Galaxies at z~2

Cited by in corpus (10)

• The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: The nature of the faintest dusty star-forming galaxies
• CO Emission in Infrared-Selected Active Galactic Nuclei
• SCUBA-2 Ultra Deep Imaging Eao Survey (Studies) III: Multi-wavelength properties, luminosity functions and preliminary source catalog of 450-$\mu$m-selected galaxies
• Tracing the evolution of dust-obscured activity using sub-millimetre galaxy populations from STUDIES and AS2UDS
• Sub-Millimetre Galaxies with Webb: Near-Infrared Counterparts and Multi-wavelength Morphology
• The redshift and star formation mode of AzTEC2: a pair of massive galaxies at $z=4.63$
• SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES) IV: Spatial clustering and halo masses of 450-$\mu$m-selected sub-millimeter galaxies
• Accretion History of AGN: Estimating the Host Galaxy Properties in X-ray Luminous AGN from z=0-3
• The SCUBA-2 Cosmology Legacy Survey: The EGS deep field -- III. The evolution of faint submillimeter galaxies at $z<4$
• SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES). V. Confusion-limited Submillimeter Galaxy Number Counts at 450 $\mu$m and Data Release for the COSMOS Field