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The Infrared Array Camera Component of the Spitzer Space Telescope Extragalactic First Look Survey

Lacy, M. and Wilson, G. and Masci, F. and Storrie-Lombardi, L. J. and Appleton, P. N. and Armus, L. and Chapman, S. C. and Choi, P. I. and Fadda, D. and Fang, F. and Frayer, D. T. and Heinrichsen, I. and Helou, G. and Im, M. and Laine, S. and Marleau, F. R. and Shupe, D. L. and Soifer, B. T. and Squires, G. K. and Surace, J. and Teplitz, H. I. and Yan, L. (2005) The Infrared Array Camera Component of the Spitzer Space Telescope Extragalactic First Look Survey. Astrophysical Journal Supplement Series, 161 (1). pp. 41-52. ISSN 0067-0049. doi:10.1086/432894.

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We present Infrared Array Camera (IRAC) data and source catalogs from the Spitzer Space Telescope Extragalactic First Look Survey. The data were taken in four broad bands centered at nominal wavelengths of 3.6, 4.5, 5.8, and 8.0 μm. A set of mosaics and catalogs have been produced that are ≈80% complete and ≈99% reliable to their chosen flux density limits. The main field survey covers 3.8 deg^2 and has flux density limits of 20, 25, 100, and 100 μJy at wavelengths of 3.6, 4.5, 5.8, and 8.0 μm, respectively. The deeper "verification" survey covers 0.25 deg^2 with limits of 10, 10, 30, and 30 μJy, respectively. We also include deep data in the ELAIS-N1 field, which covers 0.041 deg2 with limits of 4, 3, 10, and 10 μJy, respectively, but with only two wavelength coverages at a given sky position. The final bandmerged catalogs contain 103,193 objects in the main field, 12,224 in the verification field, and 5239 in ELAIS-N1. Flux densities of high signal-to-noise objects are accurate to about 10%, and the residual systematic error in the absolute flux density scale is ~2%-3%. We have successfully extracted sources at source densities as high as 100,000 deg-2 in our deepest 3.6 and 4.5 μm data. The mosaics and source catalogs will be made available through the Spitzer Science Center archive and the Infrared Science Archive.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Lacy, M.0000-0002-3032-1783
Wilson, G.0000-0002-6572-7089
Masci, F.0000-0002-8532-9395
Storrie-Lombardi, L. J.0000-0002-5987-5210
Appleton, P. N.0000-0002-7607-8766
Armus, L.0000-0003-3498-2973
Fadda, D.0000-0002-3698-7076
Frayer, D. T.0000-0003-1924-1122
Helou, G.0000-0003-3367-3415
Im, M.0000-0002-8537-6714
Laine, S.0000-0003-1250-8314
Shupe, D. L.0000-0003-4401-0430
Squires, G. K.0000-0002-1977-5717
Surace, J.0000-0001-7291-0087
Teplitz, H. I.0000-0002-7064-5424
Yan, L.0000-0003-1710-9339
Additional Information:© 2005 The American Astronomical Society. Received 2004 December 30; accepted 2005 June 8. We thank the other members of the IRAC instrument/instrument support team, in particular Sean Carey, for helpful discussions, and Dan Stern and Lexi Moustakas for making their software available. We also thank I. Drozdovsky for supplying the mosaics of the ACS data in the XFLS field, and the anonymous referee for helpful comments. This work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under NASA contract 1407. The Two Micron All Sky Survey (2MASS) is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration (NASA) and the National Science Foundation (NSF).
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Subject Keywords:catalogs — infrared: galaxies — surveys
Issue or Number:1
Record Number:CaltechAUTHORS:20170322-105720718
Persistent URL:
Official Citation:M. Lacy et al 2005 ApJS 161 41
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75315
Deposited By: Tony Diaz
Deposited On:22 Mar 2017 18:35
Last Modified:15 Nov 2021 16:32

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