AN ALMA SURVEY OF SUBMILLIMETER GALAXIES IN THE EXTENDED CHANDRA DEEP FIELD SOUTH: SOURCE CATALOG AND MULTIPLICITY

By J. Hodge, A. Karim, I. Smail, A. M. Swinbank, F. Walter, A. Biggs, R. Ivison, A. Weiss, D. M. Alexander, F. Bertoldi and 17 more. 2013

216 citations recorded by the source corpus.

We present an Atacama Large Millimeter/submillimeter Array (ALMA) Cycle 0 survey of 126 submillimeter sources from the LABOCA ECDFS Submillimeter Survey (LESS). Our 870 μm survey with ALMA (ALESS) has produced maps ∼3× deeper and with a beam area ∼200× smaller than the original LESS observations, doubling the current number of interferometrically-observed submillimeter sources. The high resolution of these maps allows us to resolve sources that were previously blended and accurately identify the origin of the submillimeter emission. We discuss the creation of the ALESS submillimeter galaxy (SMG) catalog, including the main sample of 99 SMGs and a supplementary sample of 32 SMGs. We find that at least 35% (possibly up to 50%) of the detected LABOCA sources have been resolved into multiple SMGs, and that the average number of SMGs per LESS source increases with LESS flux density. Using the (now precisely known) SMG positions, we empirically test the theoretical expectation for the uncertainty in the single-dish source positions. We also compare our catalog to the previously predicted radio/mid-infrared counterparts, finding that 45% of the ALESS SMGs were missed by this method. Our ∼1.″6 resolution allows us to measure a size of ∼9 kpc × 5 kpc for the rest-frame ∼300 μm emission region in one resolved SMG, implying a star formation rate surface density of 80 M☉ yr−1 kpc−2, and we constrain the emission regions in the remaining SMGs to be <10 kpc. As the first statistically reliable survey of SMGs, this will provide the basis for an unbiased multiwavelength study of SMG properties.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/4a36286d47b3ff98ab53c8221f5d13b16837a71c

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Citations in the corpus

AN ALMA SURVEY OF SUB-MILLIMETER GALAXIES IN THE EXTENDED CHANDRA DEEP FIELD SOUTH: PHYSICAL PROPERTIES DERIVED FROM ULTRAVIOLET-TO-RADIO MODELING (2015, methodology): “Of the 122 LESS sources that were followed-up at higher resolution with ALMA as part of the ALESS program, several were resolved into multiple counterparts, producing a total of 131 SMG detections (Hodge et al. 2013).”
THE SCUBA-2 COSMOLOGY LEGACY SURVEY: ALMA RESOLVES THE REST-FRAME FAR-INFRARED EMISSION OF SUB-MILLIMETER GALAXIES (2014, methodology): “These SMGs were drawn from the ALESS sample (Hodge et al. 2013b), and have precise <∼ 0.3 ′′ identifications from ALMA 870µm observations.”
A deep ALMA image of the Hubble Ultra Deep Field (2016, background): “Most early ALMA programmes have focused (sensibly) on pointed observations of known objects (e.g. Hodge et al. 2013; Karim et al. 2013; Ouchi et al. 2013; Bussmann et al. 2015; Capak et al. 2015; Maiolino et al. 2015; Simpson et al. 2015a, 2015b; Scoville et al. 2016), including gravitationally…”
SUBMILLIMETER GALAXIES AS PROGENITORS OF COMPACT QUIESCENT GALAXIES (2014, background): “…of z ∼ 6 (Capak et al. 2008; Schinnerer et al. 2008; Daddi et al. 2009a,b; Knudsen et al. 2010; Carilli et al. 2010, 2011; Riechers et al. 2010; Cox et al. 2011; Combes et al. 2012; Yun et al. 2012; Smolčić et al. 2012a; Micha lowski et al. 2012b; Hodge et al. 2012, 2013a; Riechers et al. 2013).”
GRAVITATIONAL LENS MODELS BASED ON SUBMILLIMETER ARRAY IMAGING OF HERSCHEL-SELECTED STRONGLY LENSED SUB-MILLIMETER GALAXIES AT z > 1.5 (2013, background): “It is also possible that a Schechter function provides an inadequate description of the bright end shape of the number counts (e.g., if blending is not properly taken into account; see Fu et al. 2013; Ivison et al. 2013; Hodge et al. 2013; Karim et al. 2013).”
Dusty Star Forming Galaxies at High Redshift (2014, methodology): “2b with de-convolved sizes of ∼5×3 kpc and∼8×5 kpc (Gaussian FWHM) in CO(2-1) imaging data with VLA, respectively (Hodge et al., 2013a).”
Characterization of Scuba-2 450 μm and 850 μm selected galaxies in the COSMOS field (2013, methodology): “…with a ∼15′′ beamsize, interferometric work suggests that best-guess counterpart matching to radio and/or 24µm counterparts will fail ∼30% of the time (Hodge et al. 2013, and Smail, private communication), dependent on ancillary field depth and robustness of FIR/radio and FIR/mid-infrared…”
KILOPARSEC-SCALE DUST DISKS IN HIGH-REDSHIFT LUMINOUS SUBMILLIMETER GALAXIES (2016, methodology): “…survey of single–dish 344 GHz LABOCA sources detected in the Extended Chandra Deep Field South (ECDFS) by Weiß et al. (2009), constituting the largest, most homogenous, and highest–sensitivity sample of interferometrically observed SMGs to date (ALESS; Hodge et al. 2013b; Karim et al. 2013).”
AN ALMA SURVEY OF SUBMILLIMETER GALAXIES IN THE EXTENDED CHANDRA DEEP FIELD SOUTH: THE REDSHIFT DISTRIBUTION AND EVOLUTION OF SUBMILLIMETER GALAXIES (2013, methodology): “For full details of the data reduction and source extraction we refer the reader to Hodge et al. (2013).”
An ALMA survey of sub-millimetre Galaxies in the Extended Chandra Deep Field South: the far-infrared properties of SMGs (2013, methodology): “For example, Hodge et al. (2013) show that at least 35% (possibly up to 50”
An ALMA survey of the SCUBA-2 CLS UDS field: physical properties of 707 sub-millimetre galaxies (2019, methodology): “Hence, ALMA has also been employed to study the dust continuum emission from samples of 100 SMGs selected from single-dish surveys at 870 or 1100 μm (e.g. Hodge et al. 2013; Brisbin et al. 2017; Cowie et al. 2018).”
GOODS-ALMA: 1.1 mm galaxy survey (2018, background): “This disagreement between interferometric and single-dish counts is expected, because the boosting of the flux of single-dish sources by their neighbour in the beam (Karim et al. 2013; Hodge et al. 2013; Scudder et al. 2016).”