J/A+A/452/119 EIS: infrared observations of CDF-S and HDF-S (Olsen+, 2006)
ESO imaging survey: infrared observations of CDF-S and HDF-S.
Olsen L.F., Miralles J.-M., da Costa L., Benoist C., Vandame B.,
Rengelink R., Rite C., Scodeggio M., Slijkhuis R., Wicenec A., Zaggia S.
<Astron. Astrophys. 452, 119 (2006)>
=2006A&A...452..119O 2006A&A...452..119O
ADC_Keywords: Surveys ; Infrared sources ; Photometry, infrared
Keywords: catalogs - surveys - stars: general - galaxies: general -
cosmology: observations
Abstract:
This paper presents infrared data obtained from observations carried
out at the ESO 3.5m New Technology Telescope (NTT) of the Hubble Deep
Field South (HDF-S) and the Chandra Deep Field South (CDF-S). These
data were taken as part of the ESO Imaging Survey (EIS) program, a
public survey conducted by ESO to promote follow-up observations with
the VLT. In the HDF-S field the infrared observations cover an area of
∼53 square arcmin, encompassing the HST WFPC2 and STIS fields, in the
JHKs passbands. The seeing measured in the final stacked images ranges
from 0.79" to 1.22" and the median limiting magnitudes (AB system, 2"
aperture, 5sigma detection limit) are J_AB∼23.0, H_AB∼22.8 and
K_AB∼23.0mag. Less complete data are also available in JKs for the
adjacent HST NICMOS field. For CDF-S, the infrared observations cover
a total area of ∼100 square arcmin, reaching median limiting
magnitudes (as defined above) of J_AB∼23.6 and K_AB∼22.7mag. For one
CDF-S field H-band data are also available. This paper describes the
observations and presents the results of new reductions carried out
entirely through the un-supervised, high-throughput EIS Data Reduction
System and its associated EIS/MVM C+±based image processing library
developed, over the past 5 years, by the EIS project and now publicly
available. The paper also presents source catalogs extracted from the
final co-added images which are used to evaluate the scientific
quality of the survey products, and hence the performance of the
software. This is done comparing the results obtained in the present
work with those obtained by other authors from independent data and/or
reductions carried out with different software packages and
techniques.
Description:
The subdirectory "cat" includes the science grade catalogs extracted
for each of the 7 fields discussed in this paper and the log-files
associated with each catalog. 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.,
2006A&A...449..837D 2006A&A...449..837D. 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 7 fields discussed in this paper and the log-files
associated with each catalog. The images are in FITS format with two
extensions, the first one giving the actual image and the second one
being a weight map.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
fields.dat 78 17 Fields (in 2 or 3 photometric bands)
catalog.dat 93 7735 Selected values from complete catalog, for guidance
desccat.dat 81 69 Content of the file object in cat/*.cat fits files
cat/* . 34 *Science grade catalogs and corresponding logfiles
ima/* . 34 *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/456/881 : EIS: infrared deep public survey (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
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- Field Field designation (CDFS1-CDFS4, HDFS1-HDFS3)
7- 8 A2 --- Band [J H Ks] Photometric band
10- 26 A17 --- Cat Catalog file name (in fits) (1)
28- 43 A16 --- Catlog Name of the tar.gz file containing the logs
as a series of image files, html and xml files
45- 61 A17 --- Image Image file name (in fits)
63- 78 A16 --- 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: catalog.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- Field Field designation (CDFS1-CDFS4, HDFS1-HDFS3)
7- 8 A2 --- Band [J H Ks] Photometric band
10 I1 --- --- [1] Field number
12- 15 I4 --- Seq Sequential number
17- 23 F7.4 mag magISO Isophotal magnitude in Band
25- 31 F7.4 mag magAUTO Kron-like elliptical aperture magnitude in Band
33- 43 F11.7 deg RAdeg Right ascension in decimal degrees, J2000
45- 55 F11.7 deg DEdeg Declination in decimal degrees, J2000
57- 62 F6.3 pix A Profile RMS along major axis
64- 68 F5.3 pix B Profile RMS along minor axis
70- 74 F5.1 deg Theta Position angle
76- 80 F5.3 --- Ell Ellipticity (1-B/A)
82- 85 F4.2 --- S/G Star/Galaxy classifier (0 galaxy, 1 star)
87- 93 F7.3 pix FluxRad Fraction-of-light radii
--------------------------------------------------------------------------------
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
References:
Dietrich et al., Paper I 2006A&A...449..837D 2006A&A...449..837D
(End) L.F. Olsen [Dark Cosmology Centre, Niels Bohr Institute] 22-Feb-2006