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