THE SPITZER DEEP, WIDE-FIELD SURVEY

Journal Article · Mon Aug 10 00:00:00 EDT 2009 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/701/1/428; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)· OSTI ID:21313673

Ashby, M L. N.; Brodwin, M ^[1]; Stern, D; Griffith, R; Eisenhardt, P; Gorjian, V ^[2]; Kozlowski, S; Kochanek, C S ^[3]; Bock, J J; Borys, C ^[4]; Brand, K; Grogin, N A ^[5]; Brown, M J. I. ^[6]; Cool, R ^[7]; Cooray, A ^[8]; Croft, S ^[9]; Dey, A ^[10]; Eisenstein, D ^[11]; Gonzalez, A H ^[12]

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1. Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138 (United States)
2. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109 (United States)
3. Department of Astronomy, The Ohio State University, Columbus, OH 43210 (United States)
4. California Institute of Technology, Pasadena, CA 91125 (United States)
5. Space Telescope Science Institute, Baltimore, MD 21218 (United States)
6. School of Physics, Monash University, Clayton 3800, Victoria (Australia)
7. Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)
8. University of California, Irvine, CA 92697 (United States)
9. University of California, Berkeley, CA 94720 (United States)
10. NOAO, 950 N. Cherry Ave., Tucson, AZ 85719 (United States)
11. Steward Observatory, Tucson, AZ 85721 (United States)
12. Department of Astronomy, University of Florida, Gainesville, FL 32611 (United States)

The Spitzer Deep, Wide-Field Survey (SDWFS) is a four-epoch infrared survey of 10 deg.{sup 2} in the Booetes 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 {approx} 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 {approx} 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{sup 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 XBooetes 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.

• OSTI ID: 21313673
• Journal Information: Astrophysical Journal, Vol. 701, Issue 1; Other Information: DOI: 10.1088/0004-637X/701/1/428; Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
COLOR
DATA PROCESSING
GALACTIC EVOLUTION
GALAXIES
INFRARED SURVEYS
PROPER MOTION
STARS
TELESCOPES