Howard A. Smith

Abstract: The Spitzer Deep, Wide-Field Survey (SDWFS) is a four-epoch infrared survey of 10 deg^(2) in the Bootes field of the NOAO Deep Wide-Field Survey using the IRAC instrument on the Spitzer Space Telescope. SDWFS, a Spitzer Cycle 4 Legacy project, occupies a unique position in the area-depth survey space defined by other Spitzer surveys. The four epochs that make up SDWFS permit-for the first time-the selection of infrared-variable and high proper motion objects over a wide field on timescales of years. Because of its large survey volume, SDWFS is sensitive to galaxies out to z ~ 3 with relatively little impact from cosmic variance for all but the richest systems. The SDWFS data sets will thus be especially useful for characterizing galaxy evolution beyond z ~ 1.5. This paper explains the SDWFS observing strategy and data processing, presents the SDWFS mosaics and source catalogs, and discusses some early scientific findings. The publicly released, full-depth catalogs contain 6.78, 5.23, 1.20, and 0.96 x 10^(5) distinct sources detected to the average 5 sigma, 4"-diameter, aperture-corrected limits of 19.77, 18.83, 16.50, and 15.82 Vega mag at 3.6, 4.5, 5.8, and 8.0 mu m, respectively. The SDWFS number counts and color-color distribution are consistent with other, earlier Spitzer surveys. At the 6 minute integration time of the SDWFS IRAC imaging, > 50% of isolated Faint Images of the Radio Sky at Twenty cm radio sources and > 80% of on-axis XBootes sources are detected out to 8.0 mu m. Finally, we present the four highest proper motion IRAC-selected sources identified from the multi-epoch imaging, two of which are likely field brown dwarfs of mid-T spectral class.

TL;DR: In this article, an overview of the survey design, reduction, calibration, star-galaxy separation, and initial results is provided, as well as initial results of the NOAO Deep Wide-Field Survey in Bootes with three or more 30 s exposures per position.

TL;DR: In this paper, the authors used the Wide Infrared Survey Explorer (WISE) infrared data to identify a distinct region of the [3.4]-[4.6]-[12] μm color-color diagram where the sources dominated by thermal radiation are separated from those dominated by non-thermal emission, in particular the blazar population.

TL;DR: In this article, the WISE Gamma-ray Strip (WGS) was parametrized on the basis of a single parameters that were then used to determine if -ray Active Galactic Nuclei of the uncertain type (AGUs) detected by Fermi are consistent with the WGS and so can be considered blazar candidates.

TL;DR: In this article, the relation between infrared and γ-ray emission for a subset of confirmed blazars from the literature, associated with Fermi sources, for which WISE archival observations are available.