SMA observations on faint Submillimeter Galaxies with S${}_{850}$ < 2 mJy: Ultra Dusty Low-Luminosity Galaxies at High Redshift

Abstract

We obtained SMA observations of eight faint (intrinsic 850 $\mu$m fluxes $<$ 2 mJy) submillimeter galaxies (SMGs) discovered in SCUBA images of the massive lensing cluster fields A370, A2390, and A1689 and detected five. In total, we obtain 5 SMA detections, all of which have de-lensed fluxes $<$1 mJy with estimated total infrared luminosities 10${}^{10}-10^{12}$ $L_{\odot }$, comparable to luminous infrared galaxies (LIRGs) and normal star-forming galaxies. Based on the latest number counts, these galaxies contribute $\sim$70% of the 850 $\mu$m extragalactic background light and represent the dominant star-forming galaxy population in the dusty universe. However, only 40${}_{-16}^{+30}$% of our faint SMGs would be detected in deep optical or near-infrared surveys, which suggests many of these sources are at high redshifts ($z\gtrsim 3$) or extremely dusty, and they are not included in current star formation history estimates.

12 pages, 11 figures, ApJ in press

References in corpus (17)

• 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: The Redshift Distribution and Evolution of Submillimeter Galaxies
• The 0.4 < z < 1.3 star formation history of the Universe as viewed in the far-infrared
• The SCUBA HAlf Degree Extragalactic Survey (SHADES) - III. Identification of radio and mid-infrared counterparts to submillimetre galaxies
• Combining Strong and Weak Gravitational Lensing in Abell 1689
• The VLA 1.4GHz Survey of the Extended Chandra Deep Field South: First Data Release
• Probing the submillimetre number counts at f(850um) < 2mJy
• An ALMA Survey of Submillimeter Galaxies in the Extended Chandra Deep Field South: The AGN Fraction and X-ray Properties of Submillimeter Galaxies
• The Multiwavelength Survey by Yale-Chile (MUSYC): Deep Near-Infrared Imaging and the Selection of Distant Galaxies
• The SCUBA HAlf Degree Extragalactic Survey (SHADES) - VII. Optical/IR photometry and stellar masses of sub-millimeter galaxies
• Resolving the Cosmic Far-Infrared Background at 450 and 850 Microns with SCUBA-2
• The Highest Resolution Mass Map of Galaxy Cluster Substructure To Date Without Assuming Light Traces Mass: LensPerfect Analysis of Abell 1689
• Is There a Maximum Star Formation Rate in High-Redshift Galaxies?
• A combined re-analysis of existing blank-field SCUBA surveys: comparative 850-micron source lists, combined number counts, and evidence for strong clustering of the bright sub-mm galaxy population
• The SCUBA Half Degree Extragalactic Survey (SHADES) - IX: the environment, mass and redshift dependence of star formation
• An extended Herschel drop-out source in the center of AS1063, a 'normal' dusty galaxy at z=6.1 or SZ substructures?
• A Multiply Imaged Luminous Infrared Galaxy Behind the Bullet Cluster

Cited by in corpus (30)

• A unified multi-wavelength model of galaxy formation
• High-redshift star formation in the ALMA era
• An ALMA Survey of Submillimeter Galaxies in the Extended Chandra Deep Field South: Near-infrared morphologies and stellar sizes
• On the dust temperatures of high redshift galaxies
• ALMA Census of Faint 1.2 mm Sources Down to ~0.02 mJy: Extragalactic Background Light and Dust-Poor High-z Galaxies
• The SCUBA-2 Cosmology Legacy Survey: Multi-wavelength Properties of ALMA-identified Submillimeter Galaxies in UKIDSS-UDS
• The East Asian Observatory SCUBA--2 survey of the COSMOS field: unveiling 1147 bright sub-millimeter sources across 2.6 square degrees
• JWST reveals a population of ultra-red, flattened disk galaxies at 2<z<6 previously missed by HST
• Faint Submillimeter Galaxies Revealed by Multifield Deep ALMA Observations: Number Counts, Spatial Clustering, and A Dark Submillimeter Line Emitter
• The SCUBA-2 Cosmology Legacy Survey: Multi-wavelengths counterparts to 10${}^3$ submillimeter galaxies in the UKIDSS-UDS field
• 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
• SCUBA-2 Ultra Deep Imaging EAO Survey (STUDIES): Faint-End Counts at 450 um
• The Hawaii SCUBA-2 Lensing Cluster Survey: Number Counts and Submillimeter Flux Ratios
• (Sub)millimetre interferometric imaging of a sample of COSMOS/AzTEC submillimetre galaxies - I. Multiwavelength identifications and redshift distribution
• Properties of Submillimeter Galaxies in a Semi-analytic Model using the "Count Matching" Approach: Application to the ECDF-S
• Modeling Kelvin-Helmholtz instability-driven turbulence with hybrid simulations of Alfvénic turbulence
• A census of optically dark massive galaxies in the early Universe from magnification by lensing galaxy clusters
• On the existence of bright IR galaxies at z>2: tension between Herschel and SCUBA-2 results?
• A Multiwavelength Study of ELAN Environments (AMUSE${}^2$): Ubiquitous dusty star-forming galaxies associated with enormous Ly$\alpha$ nebulae on megaparsec scales
• SXDF-ALMA 2 Arcmin^2 Deep Survey: Resolving and Characterizing the Infrared Extragalactic Background Light Down to 0.5 mJy
• Optical-Infrared Properties of Faint 1.3 mm Sources Detected with ALMA
• Thermal and orbital evolution of low-mass exoplanets
• SXDF-ALMA 2-arcmin^2 Deep Survey: Stacking of Rest-Frame Near-Infrared Selected Objects
• JADES Ultra-red Flattened Objects: Morphologies and Spatial Gradients in Color and Stellar Populations
• A Submillimeter Survey of Faint Galaxies Behind Ten Strong Lensing Clusters
• Multi-band Optical and Near-infrared Properties of Faint Submillimeter Galaxies with Serendipitous ALMA Detections
• The Hawaii SCUBA-2 Lensing Cluster Survey: Are Low-luminosity Submillimeter Galaxies Detected in the Rest-frame UV?
• Characterizing elusive, faint dusty star-forming galaxies: a lensed, optically undetected ALMA galaxy at z~3.3
• ALMA and RATIR observations of GRB131030A
• SXDF-UDS-CANDELS-ALMA 1.5 arcmin${}^2$ deep survey