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SEDS: The Spitzer Extended Deep Survey. Survey Design, Photometry, and Deep IRAC Source CountsThe Spitzer Extended Deep Survey (SEDS) is a very deep infrared survey within five well-known extragalactic science fields: the UKIDSS Ultra-Deep Survey, the Extended Chandra Deep Field South, COSMOS, the Hubble Deep Field North, and the Extended Groth Strip. SEDS covers a total area of 1.46 deg(exp 2) to a depth of 26 AB mag (3sigma) in both of the warm Infrared Array Camera (IRAC) bands at 3.6 and 4.5 micron. Because of its uniform depth of coverage in so many widely-separated fields, SEDS is subject to roughly 25% smaller errors due to cosmic variance than a single-field survey of the same size. SEDS was designed to detect and characterize galaxies from intermediate to high redshifts (z = 2-7) with a built-in means of assessing the impact of cosmic variance on the individual fields. Because the full SEDS depth was accumulated in at least three separate visits to each field, typically with six-month intervals between visits, SEDS also furnishes an opportunity to assess the infrared variability of faint objects. This paper describes the SEDS survey design, processing, and publicly-available data products. Deep IRAC counts for the more than 300,000 galaxies detected by SEDS are consistent with models based on known galaxy populations. Discrete IRAC sources contribute 5.6 +/- 1.0 and 4.4 +/- 0.8 nW / square m/sr at 3.6 and 4.5 micron to the diffuse cosmic infrared background (CIB). IRAC sources cannot contribute more than half of the total CIB flux estimated from DIRBE data. Barring an unexpected error in the DIRBE flux estimates, half the CIB flux must therefore come from a diffuse component.
Document ID
20140009239
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.1088/0004-637X/769/1/80
Authors
Ashby, M. L. N. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Willner, S. P. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Fazio, G. G. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Huang, J.-S. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Arendt, A. (Maryland Univ. Baltimore County Baltimore, MD, United States)
Barmby, P. (University of Western Ontario London, Ontario, Canada)
Barro, G (California Univ. Santa Cruz, CA, United States)
Bell, E. F. (Michigan Univ. Ann Arbor, MI, United States)
Bouwens, R. (Leiden Univ. Netherlands)
Cattaneo, A. (Aix-Marseille Univ. Marseille, France)
Croton, D. (Swinburne Univ. of Technology Hawthorn, Australia)
Dave, R. (Arizona Univ. Tucson, AZ, United States)
Dunlop, J. S. (Edinburgh Univ. United Kingdom)
Egami, E. (Arizona Univ. Tucson, AZ, United States)
Faber, S. (California Univ. Santa Cruz, CA, United States)
Finlator, K. (Copenhagen Univ. Denmark)
Grogin, N. A. (Space Telescope Science Inst. Baltimore, MD, United States)
Guhathakurta, P. (California Univ. Santa Cruz, CA, United States)
Hernquist, L. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Hora, J. L. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Illingworth, G. (California Univ. Santa Cruz, CA, United States)
Kashlinsky, A (Science Systems and Applications, Inc. Lanham, MD, United States)
Koekmoer, A. M. (Space Telescope Science Inst. Baltimore, MD, United States)
Koo, D. C. (California Univ. Santa Cruz, CA, United States)
Moseley, H. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
July 16, 2014
Publication Date
May 20, 2013
Publication Information
Publication: The Astrophysical Journal
Publisher: The Astrophysical Journal
Volume: 769
Issue: 1
Subject Category
Astronomy
Report/Patent Number
GSFC-E-DAA-TN9859
Funding Number(s)
CONTRACT_GRANT: NNG06EO90A
CONTRACT_GRANT: NNG12PL17C
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Spitzer
SEDS
Photometry

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