J/ApJ/769/80 Spitzer/IRAC observations of five deep fields (Ashby+, 2013)
SEDS: the Spitzer Extended Deep Survey.
Survey design, photometry, and deep IRAC source counts.
Ashby M.L.N., Willner S.P., Fazio G.G., Huang J.-S., Arendt R., Barmby P.,
Barro G., Bell E.F., Bouwens R., Cattaneo A., Croton D., Dave R.,
Dunlop J.S., Egami E., Faber S., Finlator K., Grogin N.A., Guhathakurta P.,
Hernquist L., Hora J.L., Illingworth G., Kashlinsky A., Koekemoer A.M.,
Koo D.C., Labbe I., Li Y., Lin L., Moseley H., Nandra K., Newman J.,
Noeske K., Ouchi M., Peth M., Rigopoulou D., Robertson B., Sarajedini V.,
Simard L., Smith H.A., Wang Z., Wechsler R., Weiner B., Wilson G.,
Wuyts S., Yamada T., Yan H.
<Astrophys. J., 769, 80 (2013)>
=2013ApJ...769...80A 2013ApJ...769...80A
ADC_Keywords: Galaxies, IR ; Photometry, infrared ; Surveys
Keywords: galaxies: high-redshift; infrared: galaxies; surveys
Abstract:
The 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 1.46deg2 to a depth of 26 AB mag (3σ) in both of
the warm Infrared Array Camera (IRAC) bands at 3.6 and 4.5µm.
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
300000 galaxies detected by SEDS are consistent with models based on
known galaxy populations. Discrete IRAC sources contribute 5.6±1.0
and 4.4±0.8nW/m2/sr at 3.6 and 4.5µm 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.
Description:
The Spitzer Extended Deep Survey (SEDS) is an unbiased deep survey
carried out by the Spitzer Space Telescope. The survey consists of
integrations to 12hr per pointing at 3.6 and 4.5um with Spitzer's
Infrared Array Camera (IRAC) in five well-studied fields (E-GOODS-S,
E-GOODS-N, EGS, UDS, and COSMOS/UltraVISTA) with a goal of covering a
total of one square degree. All IRAC data sets used in this paper are
listed in Table 1.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 72 36 The five Spitzer Extended Deep Survey (SEDS) fields
table7.dat 152 67181 SEDS full-depth source catalog for the UDS field
table8.dat 152 76792 SEDS full-depth source catalog for the ECDFS field
table9.dat 152 40635 SEDS full-depth source catalog for the COSMOS field
table10.dat 152 57354 SEDS full-depth source catalog for the HDFN field
table11.dat 152 75217 SEDS full-depth source catalog for the EGS field
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See also:
II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)
II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
II/261 : GOODS initial results (Giavalisco+, 2004)
I/284 : The USNO-B1.0 Catalog (Monet+ 2003)
J/A+A/544/A156 : UltraVISTA Catalogue Release DR1 (McCracken+, 2012)
J/ApJ/727/1 : IRAC/MUSYC SIMPLE survey (Damen+, 2011)
J/ApJS/193/30 : UV-to-FIR analysis of sources in the EGS. II. (Barro+, 2011)
J/ApJS/193/13 : Spitzer/IRAC sources in the EGS I. SEDs (Barro+, 2011)
J/ApJS/187/251 : Ultradeep Ks imaging in the GOODS-N (Wang+, 2010)
J/ApJ/717/1181 : Spitzer power-law galaxies in EGS (Park+, 2010)
J/ApJ/716/530 : Mid-IR variability from the SDWFS (Kozlowski+, 2010)
J/ApJ/697/506 : Mid-infrared galaxy luminosity function from AGN (Dai+, 2009)
J/ApJ/680/130 : Mid-IR colors of AGNs in the MUSYC ECDF-S (Cardamone+, 2008)
J/ApJS/177/431 : Mid-IR sources in EGS (Barmby+, 2008)
J/AJ/132/2159 : IRAC counterparts of 6cm galaxies in EGS (Willner+, 2006)
J/ApJ/596/748 : IR Observations in HDF-North (Thompson+, 2003)
J/AJ/112/1335 : Hubble Deep Field observations (Williams+ 1996)
J/AJ/105/1860 : 2-35 micron point source IR sky model (Cohen, 1993)
http://www.cfa.harvard.edu/SEDS : SEDS home page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 6 A6 --- Field Field name
8- 9 I2 h RAh Hour of right ascension (J2000)
11- 12 I2 min RAm Minute of right ascension (J2000)
14- 15 I2 s RAs Second of right ascension (J2000)
17 A1 --- DE- Sign of declination (J2000)
18- 19 I2 deg DEd Degree of declination (J2000)
21- 22 I2 arcmin DEm Arcminute of declination (J2000)
24- 25 I2 arcsec DEs Arcsecond of declination (J2000)
27- 30 F4.2 deg2 Area [0.19/0.35] Field area (1)
32- 36 I5 --- PID [8/70204] Spitzer program ID number
38- 48 A11 "YYYY/MMM/DD" Date1 First date of observation
50- 60 A11 "YYYY/MMM/DD" Date2 Other date of observation
62- 71 A10 --- BCD 3.6um, 4.5um Basic Calibrated Data used
72 A1 --- n_BCD [bc] Flag on BCD: b=30s frames;
c=200s frames
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Note (1): Areas are those covered in both IRAC channels to a depth of at
least 10ks by the projects listed.
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Byte-by-byte Description of file: table[789].dat table1[01].dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [SEDS]
6- 24 A19 --- SEDS SEDS identifier; Jhhmmss.ss-ddmmss.s
26- 34 F9.5 deg RAdeg Right Ascension (J2000) at 3.6um
36- 44 F9.5 deg DEdeg Declination (J2000) at 3.6um
46- 50 F5.2 mag [3.6]psf [13.9/26.6] PSF-fitted 3.6um band AB magnitude
52- 56 F5.2 mag [3.6]2.4 ?=0 The 3.6um band mag; 2.4" aperture (1)
58- 62 F5.2 mag [3.6]3.6 ?=0 The 3.6um band mag; 3.6" aperture (1)
64- 68 F5.2 mag [3.6]4.8 ?=0 The 3.6um band mag; 4.8" aperture (1)
70- 74 F5.2 mag [3.6]6.0 [13/39]?=0 The 3.6um band magnitude;
6.0" aperture (1)
76- 80 F5.2 mag [3.6]7.2 ?=0 The 3.6um band mag; 7.2" aperture (1)
82- 86 F5.2 mag [3.6]12 ?=0 The 3.6um band magnitude; 12" aperture (1)
88- 91 F4.2 mag e_[3.6]2.4 The 1σ uncertainty in A2.4-3.6mag
93- 96 I4 --- C3.6 Effective 3.6 um coverage (2)
98 I1 --- f3.6 ? Sum of flags for 3.6 um photometry (3)
100-104 F5.2 mag [4.5]psf PSF-fitted 4.5 um band AB magnitude
106-110 F5.2 mag [4.5]2.4 ?=0 The 4.5um band mag; 2.4" aperture (1)
112-116 F5.2 mag [4.5]3.6 ?=0 The 4.5um band mag; 3.6" aperture (1)
118-122 F5.2 mag [4.5]4.8 ?=0 The 4.5um band mag; 4.8" aperture (1)
124-128 F5.2 mag [4.5]6.0 [13/38]?=0 The 4.5um band mag;
6.0" aperture (1)
130-134 F5.2 mag [4.5]7.2 ?=0 The 4.5um band mag; 7.2" aperture (1)
136-140 F5.2 mag [4.5]12 ?=0 The 4.5um band magnitude; 12" aperture (1)
142-145 F4.2 mag e_[4.5]2.4 The 1σ uncertainty in A2.4-4.5mag
147-150 I4 --- C4.5 Effective 4.5 um coverage (2)
152 I1 --- f4.5 ? Sum of flags for 4.5 um photometry (3)
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Note (1): All aperture magnitudes are total AB magnitudes, already corrected
for the empirically determined bias and aperture correction. A
"0.00" value indicates no valid detection.
Note (2): At source position (number of 100s exposures).
Note (3): Flags as follows (see section 5 for details):
0 = no known issues;
1 = at least one nearby bright source corrupting background;
2 = low- or zero-coverage pixels on or near source;
3 = Flags 1 and 2 both apply.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 11-Dec-2014