J/AJ/138/1261 Spitzer/MIPS observations of the COSMOS field (Frayer+, 2009)
Spitzer 70 and 160 µm observations of the COSMOS field.
Frayer D.T., Sanders D.B., Surace J.A., Aussel H., Salvato M.,
Le Floc'h E., Huynh M.T., Scoville N.Z., Afonso-Luis A., Bhattacharya B.,
Capak P., Fadda D., Fu H., Helou G., Ilbert O., Kartaltepe J.S.,
Koekemoer A.M., Lee N., Murphy E., Sargent M.T., Schinnerer E., Sheth K.,
Shopbell P.L., Shupe D.L., Yan L.
<Astron. J., 138, 1261-1270 (2009)>
=2009AJ....138.1261F 2009AJ....138.1261F
ADC_Keywords: Photometry, infrared ; Surveys
Keywords: galaxies: evolution - galaxies: starburst - infrared: galaxies
Abstract:
We present Spitzer 70 and 160um observations of the COSMOS Spitzer
survey (S-COSMOS). The data processing techniques are discussed for
the publicly released products consisting of images and source
catalogs. We present accurate 70 and 160um source counts of the COSMOS
field and find reasonable agreement with measurements in other fields
and with model predictions. The previously reported counts for
GOODS-North and the extragalactic First Look Survey are updated with
the latest calibration, and counts are measured based on the large
area SWIRE survey to constrain the bright source counts. We measure an
extragalactic confusion noise level of σc=9.4±3.3mJy (q=5)
for the MIPS 160um band based on the deep S-COSMOS data and report an
updated confusion noise level of σc=0.35±0.15mJy (q=5) for
the MIPS 70um band.
Description:
The MIPS S-COSMOS observations were carried out in four campaigns from
2006 January to 2008 January (during Cycle-2, in 2006 Jan 6-9 (AOR
21); Cycle-3a in 2007 Jan 1-13 (AOR 70); Cycle-3b in 2007 May 18-28
(AOR 61) and Cycle-3c in 2008 Jan 6-7 (AOR 5)). The project (Spitzer
programs 20070 and 30143) represents over 450hr of MIPS observations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 70 1512 Spitzer COSMOS 70 micron catalog
table4.dat 74 499 Spitzer COSMOS 160 micron catalog
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See also:
II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007)
J/ApJ/680/939 : Optical spectra of 24um galaxies in COSMOS. I. (Caputi+, 2008)
J/ApJS/172/46 : VLA-COSMOS survey. II. (Schinnerer+, 2007)
J/ApJS/172/29 : XMM-Newton survey in COSMOS field. I. (Hasinger+, 2007)
J/AJ/131/250 : Spitzer 70 and 160um observations in xFLS (Frayer+, 2006)
http://irsa.ipac.caltech.edu/data/SPITZER/S-COSMOS/ : NASA S-COSMOS archive
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- --- [SCOSMOS70]
11- 26 A16 --- SCOSMOS70 Source Name (JHHMMSS.s+DDMMSS)
28- 37 F10.6 deg RAdeg Right Ascension in decimal degrees (J2000)
39- 46 F8.6 deg DEdeg Declination in decimal degrees (J2000)
48- 50 F3.1 arcsec e_pos The 2σ radial positional error
52- 56 F5.1 mJy S70 Total Spitzer/MIPS 70 micron band flux density
58- 62 F5.1 mJy e_S70 The 1σ error on S70 (1)
64- 67 F4.1 --- SNR Signal-to-Noise Ratio of the source peak
69- 70 A2 --- Flag [ap ] Measurement method flag (2)
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Note (1): Including calibration uncertainty.
Note (2): Flag as follows:
p = Point-source Response Function (PRF);
a = aperture measurement with a diameter of 96 arcsec;
ap = aperture measurement whose whose flux was divided between two
components based on the strengths of their peaks.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- --- [SCOSMOS160]
12- 27 A16 --- SCOSMOS160 Source Name (JHHMMSS.s+DDMMSS)
29- 38 F10.6 deg RAdeg Right Ascension in decimal degrees (J2000)
40- 47 F8.6 deg DEdeg Declination in decimal degrees (J2000)
49- 52 F4.1 arcsec e_pos The 2σ radial positional error
54- 60 F7.1 mJy S160 Total Spitzer/MIPS 160 micron band flux
density
62- 67 F6.1 mJy e_S160 The 1σ error on S160 (1)
69- 72 F4.1 --- SNR Signal-to-Noise Ratio of the source peak
74 A1 --- Flag [ap] Measurement method flag (2)
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Note (1): Including calibration uncertainty.
Note (2): Flag as follows:
p = Point-source Response Function (PRF);
a = aperture measurement with a diameter of 4 arcmin.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 23-Jan-2012