J/A+A/372/364 ISO FIRBACK Source Catalog at 170um (Dole+, 2001)
FIRBACK: III. Catalog, source counts, and cosmological implications of the
170 microns ISO Deep Survey
Dole H., Gispert R., Lagache G., Puget J.-L., Bouchet F.R., Cesarsky C.,
Ciliegi P., Clements D.L., Dennefeld M., Desert F.-X., Elbaz B.,
Franceschini A., Guiderdon B., Harwit M., Lemke D., Moorwood A.F.M.,
Oliver S., Reach W.T., Rowan-Robinson M., Stickel M.
<Astron. Astrophys. 372, 364 (2001)>
=2001A&A...372..364D 2001A&A...372..364D
ADC_Keywords: Galaxies, IR ; Surveys
Mission_Name: ISO
Keywords: cosmology: miscellaneous - galaxies: infrared - galaxies: evolution -
galaxies: statistics
Abstract:
The FIRBACK (Far Infrared BACKground) survey is one of the deepest
imaging surveys carried out at 170µm with ISOPHOT onboard ISO, and
is aimed at the study of the structure of the Cosmic Far Infrared
Background. This paper provides the analysis of resolved sources.
After a validated process of data reduction and calibration, we
perform intensive simulations to optimize the source extraction,
measure the confusion noise (σc=45mJy), and give the
photometric and astrometric accuracies. 196 galaxies with flux
S>3σc are detected in the area of 3.89 square degrees. Counts
of sources with flux S>4σc present a steep slope of 3.3±0.6
on a differential ``logN-logS'' plot between 180 and 500mJy. As a
consequence, the confusion level is high and will impact dramatically
on future IR deep surveys. This strong evolution, compared with a
slope of 2.5 from Euclidian geometry, is in line with models implying
a strongly evolving Luminous Infrared Galaxy population. The resolved
sources account for less than 10% of the Cosmic Infrared Background at
170µm, which is expected to be resolved into sources in the 1 to
10mJy range.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table7.dat 41 23 ISO FIRBACK Source Catalog for the
FIRBACK South Marano Field (FSM)
table8.dat 41 56 ISO FIRBACK Source Catalog for the
FIRBACK North 1 Field (FN1)
table9.dat 41 27 ISO FIRBACK Source Catalog for the
FIRBACK North 2 Field (FN2)
table10.dat 41 15 Complementary catalog in FSM
table11.dat 41 47 Complementary catalog in FN1
table12.dat 41 28 Complementary catalog in FN2
tables.tex 220 330 LaTeX version of the tables
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See also:
B/iso : ISO Observation Log (ISO Team, 2001)
Byte-by-byte Description of file: table*.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Source Name of the source
10- 11 I2 h RAh Right ascension (J2000)
13- 14 I2 min RAm Right ascension (J2000)
16- 17 I2 s RAs Right ascension (J2000)
19 A1 --- DE- Declination sign (J2000)
20- 21 I2 deg DEd Declination (J2000)
23- 24 I2 arcmin DEm Declination (J2000)
26- 27 I2 arcsec DEs Declination (J2000)
29- 32 I4 mJy S170um Flux of source at 170 microns
34- 36 I3 mJy e_S170um Flux uncertainty of source at 170 microns
38- 41 F4.1 --- S/Nc Signal to noise (confusion) ratio
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Acknowledgements: Herve Dole
References:
Puget et al., Paper I 1999A&A...345...29P 1999A&A...345...29P
Lagache & Dole, Paper II 2001A&A...372..702L 2001A&A...372..702L
(End) Patricia Bauer [CDS] 31-May-2001