A Submillimeter Perspective on the GOODS Fields (SUPER GOODS). V. Deep 450 Micron Imaging

Abstract

We present deep SCUBA-2 450 micron imaging of the two GOODS fields, achieving a central rms of 1.14 mJy for the GOODS-N and 1.86 mJy for the GOODS-S. For each field, we give a catalog of >4-sigma detections (79 and 16 sources, respectively). We construct the 450 micron number counts, finding excellent agreement with others from the literature. We match the 450 micron sources to 20 cm data (both fields) and ALMA 870 micron data (GOODS-S) to gauge the accuracy of the 450 micron positions. We use the extensive redshift information available on the fields to test how well redshift can be estimated from simple flux ratios (450 micron/850 micron and 20 cm/850 micron), finding tight correlations. We provide a catalog of candidate high-redshift submillimeter galaxies. We look for evolution in dust temperature with redshift by fitting the spectral energy distributions of the sources, but we do not find any significant redshift evolution after accounting for the far-infrared luminosity. We do not find evidence for 450 micron selection picking out warmer sources than 850 micron selection. We find that a 450 micron selected sample only adds low-redshift (z<1.5) galaxies beyond an 850 micron sample.

24 pages, 15 figures, accepted for publication in ApJ. Updated references and fixed source names in Tables 2 and 4 after proofs

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• A Submillimeter Survey of Faint Galaxies Behind Ten Strong Lensing Clusters
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• 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
• A mock redshift catalogue of the dusty star-forming galaxy population with intrinsic clustering and lensing for deep millimetre surveys
• Overdense fireworks in GOODS-N: Unveiling a record number of massive dusty star forming galaxies at z$\sim$5.2 with the N2CLS