The SCUBA-2 Cosmology Legacy Survey: 850 μm maps, catalogues and number counts

Abstract

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The Dust and [C ii] Morphologies of Redshift ∼4.5 Sub-millimeter Galaxies at ∼200 pc Resolution: The Absence of Large Clumps in the Interstellar Medium at High-redshift

“…In addition to the three ALESS sources, we include UDS 47.0 19 from the ALMA follow-up program of the SCUBA-2 Cosmology Legacy Survey (Geach et al 2017). A pilot study observed the 30 brightest SCUBA-2 sources in the ∼1 deg 2 UKIDSS/UDS field (Simpson et al 2015a(Simpson et al , 2015b(Simpson et al , 2017.…”

“…We adopt an average dust temperature of T d =50±4 K, a dust emissivity index of 19 The numerical identifier for this SCUBA-2 source from Simpson et al (2017) changed in the final version of the S2CLS UDS catalog (Geach et al 2017) with the source corresponding to UDS0051 in that work. This ALMA identified SMG is cataloged as AS2UDS0051.0 in S. Stach et al (2018, in preparation) 2 β=1.5, and assume the dust is optically thick at λ=70 μm.…”

“Super-deblended” Dust Emission in Galaxies. I. The GOODS-North Catalog and the Cosmic Star Formation Rate Density out to Redshift 6

“…We use coadded PACS images (Magnelli et al 2013) combining data from PEP (PI: D. Lutz) and GOODSHerschel (PI: D. Elbaz), and SPIRE data from GOODSHerschel. The SCUBA2 data are from the S2CLS program (Geach et al 2017), and the AzTEC+MAMBO coadded data are from Penner et al (2011). We used the original SCUBA2 maps rather than the matched-filtered versions (which are also provided by Geach et al 2017) where the convolution with PSF reduces the effective angular resolution.…”

“…The SCUBA2 data are from the S2CLS program (Geach et al 2017), and the AzTEC+MAMBO coadded data are from Penner et al (2011). We used the original SCUBA2 maps rather than the matched-filtered versions (which are also provided by Geach et al 2017) where the convolution with PSF reduces the effective angular resolution. 19,20 We used the deep radio imaging from Owen(2017), and the shallower radio imaging from Morrison et al (2010).…”

A Machine-learning Method for Identifying Multiwavelength Counterparts of Submillimeter Galaxies: Training and Testing Using AS2UDS and ALESS

“…In the past two decades, numerous widefield submillimeter surveys have been undertaken on the James Clerk Maxwell Telescope (JCMT), IRAM 30 m, APEX, and ASTE equipped with the SCUBA/SCUBA-2, MAMBO, LABOCA, and AZTEC cameras, respectively (e.g., Smail et al 1997;Barger et al 1998;Hughes et al 1998;Scott et al 2002Scott et al , 2012Coppin et al 2006;Weiß et al 2009;Ikarashi et al 2011;Geach et al 2017;Wang et al 2017; and see Casey et al 2014 for a review). The main challenge for follow-up studies of the sources selected from these surveys is the coarse angular resolution of the single-dish maps, with the full width at half maximum (FWHM) typically around ∼8″-10″ at 450 μm (but only for relatively small surveys; Geach et al 2013;Wang et al 2017) and ∼15″-20″ in the widefield surveys undertaken at 850-1100 μm (Weiß et al 2009;Geach et al 2017), which results in uncertain identifications of the counterparts at other observed frequencies.…”