A SCUBA Map in the Spitzer First Look Survey: Source Catalog and Number Counts

Abstract

Using the Submillimetre Common-User Bolometer Array (SCUBA) instrument on the James Clerk Maxwell Telescope, we have made a submillimeter mosaic at 850 μm of a subarea of the Spitzer First Look Survey (FLS). Our image covers the central 151 arcmin2 of the northern extragalactic continuous viewing zone field of the FLS to a median 3 σ depth of 8.4 mJy. The image contains six 850 μm sources detected at 3.0 σ or higher significance. We make the catalog of these SCUBA-selected FLS sources available to the community. After correcting for incompleteness and flux bias, we find that the density of sources brighter than 7 mJy in our field is 2.2 × 102 deg-2 (95% Poisson confidence limits), which is consistent with other surveys that probe the bright end of the submillimeter population.