J/A+A/456/881 EIS: infrared deep public survey (Olsen+, 2006)
ESO imaging survey: infrared deep public survey.
Olsen L.F., Miralles J.-M., da Costa L., Madejsky R., Jorgensen H.E.,
Mignano A., Arnouts S., Benoist C., Dietrich J.P., Slijkhuis R., Zaggia S.
<Astron. Astrophys. 456, 881 (2006)>
=2006A&A...456..881O 2006A&A...456..881O (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Infrared sources ; Photometry, infrared
Keywords: catalogs - surveys - stars: general - galaxies: general
Abstract:
This paper is part of the series presenting the final results obtained
by the ESO Imaging Survey (EIS) project. It presents new J and Ks data
obtained from observations conducted at the ESO 3.5m New Technology
Telescope (NTT) using the SOFI camera. These data were taken as part
of the Deep Public Survey (DPS) carried out by the ESO Imaging Survey
program, significantly extending the earlier optical/infrared EIS-DEEP
survey presented in a previous paper of this series. The DPS-IR survey
comprises two observing strategies: shallow Ks observations providing
nearly full coverage of pointings with complementary multi-band (in
general UBVRI) optical data obtained using ESO's wide-field imager
(WFI) and deeper J and Ks observations of the central parts of these
fields. Currently, the DPS-IR survey provides a coverage of roughly
2.1 square degrees (∼300 SOFI pointings) in Ks with 0.63 square
degrees to fainter magnitudes and also covered in J, over three
independent regions of the sky. The goal of the present paper is to
briefly describe the observations, the data reduction procedures, and
to present the final survey products which include fully calibrated
pixel-maps and catalogs extracted from them. The astrometric solution
with an estimated accuracy of <0.15" is based on the USNO catalog and
limited only by the accuracy of the reference catalog. The final
stacked images presented here number 89 and 272, in J and Ks,
respectively, the latter reflecting the larger surveyed area. The J
and Ks images were taken with a median seeing of 0.7" and 0.8". The
images reach a median 5 sigma limiting magnitude of J_AB∼23.06 as
measured within an aperture of 2", while the corresponding limiting
magnitude in Ks_AB is ∼21.41 and ∼22.16mag for the shallow and deep
strategies. Although some spatial variation due to varying observing
conditions is observed, overall the observed limiting magnitudes are
consistent with those originally proposed. The quality of the data has
been assessed by comparing the measured magnitude of sources at the
bright end directly with those reported by the 2MASS survey and at the
faint end by comparing the counts of galaxies and stars with those of
other surveys to comparable depth and to model predictions. The final
science-grade catalogs together with the astrometrically and
photometrically calibrated co-added images are available at CDS.
Description:
The subdirectory "cat" includes the science grade catalogs extracted
for each of the fields covering the 2.1 square degrees discussed in
this paper and the log-files associated with each catalog. The data
set extends the one presented in Olsen et al., 2006, Cat.
J/A+A/452/119.
The catalog files are in FITS format containing the primary HDU and 4
tables (MASKS, FILTER, OBJECTS and FIELDS) with the format described
in Dietrich et al., 2006, Cat. J/A+A/452/119. The log files contain
information about parameters used in the extraction process as well as
parameters for quality assessment of the catalogs.
The subdirectory "ima" includes the science grade images created for
each of the fields covering the 2.1 square degrees discussed in this
paper and the log-files associated with each catalog. The data set
extends the one presented in Olsen et al., 2006, Cat. J/A+A/452/119.
The images are in FITS format with two extensions, the first one
giving the actual image and the second one being a weight map.
The details of the field naming convention can be found at
http://www.eso.org/science/eis
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
fields.dat 127 355 Fields (in 1 or 2 photometric bands)
deep1.dat 128 70559 deep1 field selected values, for guidance
deep2.dat 128 75659 deep2 field selected values, for guidance
deep3.dat 128 77284 deep3 field selected values, for guidance
desccat.dat 81 69 Content of the file object in cat/*.cat fits files
cat/* . 3 *Science grade catalogs and corresponding logfiles
ima/* . 3 *Science grade images and corresponding logfiles
--------------------------------------------------------------------------------
Note on cat/*, ima/*: catalog or images are stored in FITS format
(extension .fits); log files are stored as gzipped tar files
(extension .tgz)
--------------------------------------------------------------------------------
See also:
http://www.eso.org/eis/ : ESO Imaging Survey home page
J/A+A/452/119 : EIS: infrared observations of CDF-S and HDF-S (Olsen+, 2006)
J/A+A/379/740 : ESO Imaging Survey (EIS) (Arnouts+, 2001)
J/A+A/384/81 : ESO Imaging Survey. CDF-S point sources (Hatziminaoglou+, 2002)
J/A+A/392/741 : Stellar Catalogue in the Chandra DFS (Groenewegen+ 2002)
J/A+AS/137/75 : ESO Imaging Survey. IV. (Zaggia+, 1999)
J/A+AS/137/83 : ESO Imaging Survey. VII. (Scodeggio+, 1999)
Byte-by-byte Description of file: fields.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Field Field designation (deepNA_NNN)
12 A1 --- Band [JK] Photometric band
14- 40 A27 --- Cat Catalog file name (in fits) (1)
42- 71 A30 --- Catlog Name of the tar.gz file containing the logs
as a series of image files, html and xml files
72- 98 A27 --- Image Image file name (in fits)
100-127 A28 --- Imalog Name of the tar.gz file containing the logs
as a series of image files, html and xml files
--------------------------------------------------------------------------------
Note (1): Catalogues are stored as FITS files, with 4 extensions in
addition to the primary HDU:
-- MASKS 1 column
-- FILTER 4 columns - filter transmission and
response of the entire system
-- OBJECTS 69 columns - the actual object list
(columns described in the file "desccat.dat")
-- FIELDS 109 columns - general information about the field
--------------------------------------------------------------------------------
Byte-by-byte Description of file: deep1.dat deep2.dat deep3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 --- Field Field designation (deepNA_NNN)
12 A1 --- Band [JK] Photometric band
14 I1 --- --- [1] Field number
16- 19 I4 --- Seq Sequential number
21- 28 F8.4 mag magISO Isophotal magnitude in Band
31- 37 F7.4 mag magAUTO Kron-like elliptical aperture magnitude in Band
39- 49 F11.7 deg RAdeg Right ascension in decimal degrees, J2000
51- 61 F11.7 deg DEdeg Declination in decimal degrees, J2000
63- 69 F7.3 pix A Profile RMS along major axis
71- 76 F6.3 pix B Profile RMS along minor axis
78- 82 F5.1 deg Theta Position angle
84- 88 F5.3 --- Ell Ellipticity (1-B/A)
90- 93 F4.2 --- S/G Star/Galaxy classifier (0 galaxy, 1 star)
95-104 F10.3 pix FluxRad Fraction-of-light radii
106-128 A23 --- File Name of the FITS file containing the
complete data, in subdirectory cat
--------------------------------------------------------------------------------
Byte-by-byte Description of file: desccat.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 19 A19 --- Param Parameter name
21- 33 A13 --- Unit Unit of the parameter
34- 81 A48 ---- Expla Explanation of the parameter
--------------------------------------------------------------------------------
Acknowledgements: Lisbeth Fogh Olsen, LisbethFogh.OLSEN(at)obs-nice.fr,
Dark Cosmology Centre, Niels Bohr Institute
References:
Dietrich et al., Paper I 2006A&A...449..837D 2006A&A...449..837D
Olsen et al., Paper II 2006A&A...452..119O 2006A&A...452..119O, Cat. J/A+A/452/119
(End) Patricia Vannier [CDS] 08-Aug-2006